Optima
The OPTIMA RedTop RT S 2.1 is a revolutionary 6-volt high-performance starter battery that, thanks to patented SPIRALCELL TECHNOLOGY®, delivers maximum starting power in a compact and extremely rugged case. With a nominal voltage of 6 V and an enormous cold cranking current of 800 A for this class, it is the ultimate solution for classic vehicles and demanding applications that require a reliable and powerful 6-volt energy source. Its extreme vibration resistance and absolutely maintenance-free, leakproof design make it the first choice for classic cars, hot rods and tractors.Highlights at a glanceMaximum 6V starting power: Offers the highest possible starting performance for reliable engine starts, even in large-displacement 6-volt engines.SPIRALCELL TECHNOLOGY®: Unique spiral cell construction for extreme vibration resistance and a longer service life.Extreme vibration resistance: Up to 15 times more vibration-resistant than conventional batteries, ideal for use in older vehicles without modern suspension.Absolutely maintenance-free and leakproof: The sealed AGM construction allows installation in almost any position and prevents paint damage caused by acid leakage.Long service life: Lasts up to three times longer than a conventional 6-volt starter battery.Maximum performance for classic vehiclesThe OPTIMA RedTop RT S 2.1 was specifically developed to bring the performance and reliability of modern technology to classic 6-volt vehicles. It is the ideal choice for classic cars, classic vehicles, hot rods and historic agricultural vehicles, which often have engines that are difficult to start. Even after longer periods of inactivity, as is typical for collector's vehicles, it reliably supplies the necessary power for an effortless start.Superior SPIRALCELL TECHNOLOGY®At the heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high-purity lead spirals are used, wrapped in glass fiber fleece (AGM). This compact and extremely stable design minimizes plate spacing, maximizes active surface area and reduces internal resistance. The result is unrivaled starting performance that can be consistently delivered even under the harshest conditions.Built for the most demanding conditionsThe OPTIMA RedTop is designed for tough use. Its sealed construction not only prevents acid leakage, which is especially important in valuable classics, but also evaporation, making it absolutely maintenance-free. The rugged construction made of impact-resistant polypropylene and the extreme vibration resistance ensure that vibrations and shocks cannot harm the battery. Features ModelOPTIMA RedTop RT S 2.1 TechnologyAGM Spiralcell Nominal voltage (V)6 Capacity (Ah)50 Cold cranking current EN (A)815 Dimensions (L x W x H in mm)254 x 90 x 206 ConnectionSAE-Autopol Weight (kg)approx. 8.5 FAQs about the OPTIMA RedTop 6V batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY® in a classic car?In classic vehicles, spiral cell technology offers two decisive advantages: first, extreme vibration resistance, which is of great benefit in older chassis. Secondly, it is absolutely leakproof, which protects valuable paint and body parts from acid damage, a common problem with old wet batteries.What is the difference between OPTIMA RedTop, YellowTop and BlueTop?RedTop: A pure high-performance starter battery for maximum starting power. Ideal for vehicles where starting is the main load. YellowTop: A 12-volt dual-purpose battery (starting and supplying) for vehicles with high energy requirements due to additional consumers. BlueTop: A 12-volt special battery for marine and leisure vehicles.Do I need a special charger for this 6V AGM battery?Yes, it is very important to use a modern, microprocessor-controlled charger that is suitable for both 6 volts and AGM technology. Old, unregulated 6-volt chargers can damage the battery due to overvoltage.Can this battery be deeply discharged?The RedTop is designed as a pure starter battery and should not be deeply discharged, as this can shorten its service life. For applications where power is regularly required for consumers at a standstill (e.g. a music system), a YellowTop or BlueTop battery (which are only available in 12V) would be the right choice.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally harmful substances and must not be disposed of in household waste. You can return your old battery free of charge to any retailer selling new batteries or municipal recycling centers to ensure proper recycling.
The OPTIMA RedTop RT S 3.7 is a revolutionary high-performance starter battery that delivers maximum starting power in a compact and extremely robust housing thanks to the patented SPIRALCELL TECHNOLOGY®. With a nominal voltage of 12 V and an enormous cold start current of 730 A, it is the ultimate solution for demanding vehicles that require a reliable and powerful start under all conditions. Its extreme vibration resistance and the absolutely maintenance-free, leak-proof design make it the first choice for hot rods, off-road vehicles, agricultural machinery and all vehicles that need more than just an ordinary battery.Highlights at a glanceMaximum starting power: Offers the highest possible starting performance for reliable engine start even at extreme temperatures.SPIRALCELL TECHNOLOGY®: Unique spiral cell design for extreme vibration resistance and longer service life.Extreme vibration resistance: Up to 15 times more vibration-resistant than conventional batteries, ideal for tough off-road use or heavy vibration.Absolutely maintenance-free and leak-proof: The sealed AGM design enables installation in virtually any position.Long service life: Lasts up to three times longer than a conventional starter battery.Maximum performance for demanding vehiclesThe OPTIMA RedTop RT S 3.7 was specially developed for the extreme demands of high-performance vehicles whose main requirement is a powerful starting impulse. It is the ideal choice for trucks, SUVs, hot rods, classic cars and construction vehicles. It reliably supplies the necessary energy to start large engines effortlessly, even during seasonal use or after long periods of inactivity. Its compact design and high power density also make it the perfect solution for vehicles with limited installation space.Superior SPIRALCELL TECHNOLOGY®The heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, highly pure lead spirals are used here, which are wrapped with a glass fibre mat (AGM). This compact and extremely stable design minimises plate spacing, maximises active surface area and reduces internal resistance. The result is unmatched starting performance that can be delivered consistently even under the harshest conditions.Built for the most demanding conditionsThe OPTIMA RedTop is designed for tough use. Its sealed construction not only prevents acid leakage, but also evaporation, making it absolutely maintenance-free. The robust construction made of shock-resistant polypropylene and the extreme vibration resistance ensure that vibrations and jolts during demanding driving operation cannot harm the battery. Features ModelOPTIMA RedTop RT S 3.7 TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)44 Cold start current EN (A)730 Dimensions (L x W x H in mm)245 x 172 x 194 ConnectionSAE auto post & side connections Weight (kg)approx. 14.7 FAQs about the OPTIMA RedTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology provides an extremely robust and vibration-resistant internal structure, a very low internal resistance for highest starting currents and a longer service life compared to conventional batteries with flat plates. It is optimised for maximum starting performance.What is the difference between OPTIMA RedTop, YellowTop and BlueTop?RedTop: A pure high-performance starter battery for maximum starting power. Ideal for vehicles where the starting process is the main load. YellowTop: A dual-purpose battery (starting and supply) for vehicles with high energy demand due to additional consumers (e.g. winch, large hi-fi systems). BlueTop: Specialist for marine and leisure vehicles, available as a pure starter battery or as a dual-purpose battery.Is this battery suitable for vehicles with many electrical consumers?The RedTop is primarily a starter battery. If your vehicle, in addition to starting, also has extensive equipment such as powerful hi-fi systems, auxiliary headlights or a winch operated when stationary, an OPTIMA YellowTop or BlueTop (dual purpose) is the better choice, as these are designed for deep discharge cycles.Which charger do I need for this AGM battery?For AGM batteries, especially for OPTIMA batteries, a modern, microprocessor-controlled charger is recommended, which has a special charging characteristic for AGM batteries. This ensures full and gentle charging and maximises service life.How should this lead battery be disposed of?Lead batteries contain environmentally harmful substances and must not be disposed of in household waste. You can return your old battery free of charge to any dealer who sells new batteries or to municipal recycling centres to ensure proper disposal.
The OPTIMA RedTop RT R 3.7 is a revolutionary high-performance starter battery that delivers maximum starting power in a compact and extremely robust housing thanks to the patented SPIRALCELL TECHNOLOGY®. With a nominal voltage of 12 V and an enormous cold-start current of 730 A, it is the ultimate solution for demanding vehicles that require a reliable and powerful start in all conditions. Its extreme vibration resistance and absolutely maintenance-free, leak-proof construction make it the first choice for hot rods, off-road vehicles, agricultural machinery and all vehicles that need more than just an ordinary battery.Highlights at a glanceMaximum starting power: Offers the highest possible starting performance for a reliable engine start even at extreme temperatures.SPIRALCELL TECHNOLOGY®: Unique spiral cell design for extreme vibration resistance and a longer service life.Extreme vibration resistance: Up to 15 times more vibration-resistant than conventional batteries, ideal for tough off-road use or strong vibrations.Absolutely maintenance-free and leak-proof: The sealed AGM construction allows installation in almost any position.Long service life: Lasts up to three times longer than a conventional starter battery.Maximum performance for demanding vehiclesThe OPTIMA RedTop RT R 3.7 was specifically developed for the extreme demands of high-performance vehicles, whose primary requirement is a powerful starting impulse. It is the ideal choice for trucks, SUVs, hot rods, classic cars and construction vehicles. Even during seasonal use or after long periods of inactivity, it reliably supplies the necessary energy to start large engines effortlessly. Its compact design and high power density also make it the perfect solution for vehicles with limited installation space.Superior SPIRALCELL TECHNOLOGY®At the heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high-purity lead spirals are used, wrapped in a glass fibre fleece (AGM). This compact and extremely robust design minimises plate spacing, maximises the active surface area and reduces internal resistance. The result is unmatched starting performance that can consistently be called upon even under the toughest conditions.Built for the most demanding conditionsThe OPTIMA RedTop is designed for tough use. Its sealed construction not only prevents acid leakage, but also evaporation, making it absolutely maintenance-free. The rugged construction made from impact-resistant polypropylene and the extreme vibration resistance ensure that vibrations and shocks during demanding driving conditions cannot harm the battery. Features ModelOPTIMA RedTop RT R 3.7 TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)44 Cold start current EN (A)730 Dimensions (L x W x H in mm)245 x 172 x 194 ConnectionSAE Autopole (positive terminal right) Weight (kg)approx. 14.7 FAQs about the OPTIMA RedTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology provides an extremely robust and vibration-resistant internal structure, a very low internal resistance for highest starting currents and a longer service life compared to traditional batteries with flat plates. It is optimised for maximum starting performance.What is the difference between OPTIMA RedTop, YellowTop and BlueTop?RedTop: A pure high-performance starter battery for maximum starting power. Ideal for vehicles where the start process is the main load. YellowTop: A dual-purpose battery (starting and supply) for vehicles with high energy demand due to additional consumers (e.g. winch, large hi-fi systems). BlueTop: Specialist for marine and leisure vehicles, available as a pure starter battery or as a dual-purpose battery.Is this battery suitable for vehicles with many electrical consumers?The RedTop is primarily a starter battery. If your vehicle, in addition to starting, also has extensive equipment such as powerful hi-fi systems, auxiliary headlights or a winch that are operated when stationary, an OPTIMA YellowTop or BlueTop (Dual Purpose) is the better choice, as these are designed for deep discharge cycles.Which charger do I need for this AGM battery?For AGM batteries, especially for OPTIMA batteries, a modern, microprocessor-controlled charger is recommended that has a special charging characteristic for AGM batteries. This ensures a complete and gentle charge and maximises lifetime.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally hazardous substances and must not be disposed of in household waste. You can return your old battery free of charge to any retailer that sells new batteries, or at municipal recycling centres, to ensure proper recycling.
The OPTIMA RedTop RT S 4.2 is a revolutionary high-performance starter battery that, thanks to the patented SPIRALCELL TECHNOLOGY®, delivers maximum starting power in a compact and extremely robust case. With a rated voltage of 12 V and an enormous cold cranking current of 815 A, it is the ultimate solution for demanding vehicles that require reliable and powerful starting under all conditions. Its extreme vibration resistance and absolutely maintenance-free, spillproof construction make it the first choice for hot rods, off-road vehicles, agricultural machinery, and all vehicles that need more than just an ordinary battery.Highlights at a glanceMaximum starting power: Offers the highest possible starting performance for reliable engine starting even in extreme temperatures.SPIRALCELL TECHNOLOGY®: Unique spiral cell construction for extreme vibration resistance and a longer service life.Extreme vibration resistance: Up to 15 times more vibration-resistant than conventional batteries, ideal for tough off-road use or heavy vibration.Absolutely maintenance-free and spillproof: The sealed AGM construction allows installation in almost any position.Long service life: Lasts up to three times longer than a conventional starter battery.Maximum performance for demanding vehiclesThe OPTIMA RedTop RT S 4.2 was specifically developed for the extreme requirements of high-performance vehicles whose main requirement is a powerful starting impulse. It is the ideal choice for trucks, SUVs, hot rods, classic cars and construction vehicles. Even with seasonal use or longer downtimes, it reliably provides the necessary power to effortlessly start large engines. Its compact design and high power density also make it the perfect solution for vehicles with limited installation space.Superior SPIRALCELL TECHNOLOGY®At the core of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high-purity lead spirals are used, wrapped in a glass fibre mat (AGM). This compact and extremely stable design minimises plate spacing, maximises the active surface and reduces internal resistance. The result is unsurpassed starting performance that can be delivered consistently even under the toughest conditions.Built for the most demanding conditionsThe OPTIMA RedTop is designed for tough use. Its sealed construction not only prevents acid leakage, but also evaporation, making it completely maintenance-free. The robust design made from impact-resistant polypropylene and the extreme vibration resistance ensure that vibrations and shocks during demanding driving have no effect on the battery. Features ModelOPTIMA RedTop RT S 4.2 TechnologyAGM Spiralcell Rated voltage (V)12 Capacity (Ah)50 Cold cranking current EN (A)815 Dimensions (L x W x H in mm)254 x 175 x 200 ConnectionSAE Autopole & side terminals Weight (kg)approx. 17.6 FAQs about the OPTIMA RedTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology ensures an extremely robust and vibration-resistant internal structure, a very low internal resistance for maximum starting currents and a longer lifespan compared to conventional batteries with flat plates. It is optimised for maximum starting performance.What is the difference between OPTIMA RedTop, YellowTop and BlueTop?RedTop: A pure high-performance starter battery for maximum starting power. Ideal for vehicles where starting is the main load. YellowTop: A dual-purpose battery (starting and supply) for vehicles with high energy needs due to additional consumers (e.g. winch, large hi-fi systems). BlueTop: Specialist for marine and leisure vehicles, available as a pure starter battery or as a dual-purpose battery.Is this battery suitable for vehicles with many electrical consumers?The RedTop is primarily a starter battery. If your vehicle, in addition to starting, also has extensive equipment such as powerful hi-fi systems, additional spotlights or a winch that are used when stationary, an OPTIMA YellowTop or BlueTop (dual purpose) is the better choice as they are designed for deep discharge cycles.Which charger do I need for this AGM battery?For AGM batteries, especially for OPTIMA batteries, a modern, microprocessor-controlled charger is recommended that has a special charging curve for AGM batteries. This ensures complete and gentle charging and maximises service life.How should this lead-acid battery be disposed of?Lead-acid batteries contain harmful substances and must not be disposed of with household waste. You can return your old battery free of charge to any retailer who sells new batteries or to municipal recycling centres to ensure proper recycling.
The OPTIMA RedTop RT U 4.2 is a revolutionary high-performance starter battery that delivers maximum starting power in a compact and extremely robust housing thanks to the patented SPIRALCELL TECHNOLOGY®. With a nominal voltage of 12 V and an enormous cold starting current of 815 A, it is the ultimate solution for demanding vehicles that require a reliable and powerful start under all conditions. Its extreme vibration resistance and absolutely maintenance-free, leak-proof design make it the first choice for hot rods, off-road vehicles, agricultural machinery and all vehicles that need more than just an ordinary battery.Highlights at a glanceMaximum starting power: Offers the highest possible starting performance for reliable engine starts even at extreme temperatures.SPIRALCELL TECHNOLOGY®: Unique spiral cell design for extreme vibration resistance and longer service life.Extreme vibration resistance: Up to 15 times more vibration-resistant than conventional batteries, ideal for rough off-road use or heavy vibrations.Absolutely maintenance-free and leak-proof: The sealed AGM design allows installation in almost any position.Long service life: Lasts up to three times longer than a conventional starter battery.Maximum performance for demanding vehiclesThe OPTIMA RedTop RT U 4.2 has been specifically developed for the extreme demands of high-performance vehicles whose main requirement is a powerful starting impulse. It is the ideal choice for trucks, SUVs, hot rods, classic cars and construction machinery. Even in seasonal use or after longer periods of downtime, it reliably provides the necessary power to start large engines effortlessly. Its compact design and high power density also make it the perfect solution for vehicles with limited installation space.Superior SPIRALCELL TECHNOLOGY®The heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, highly pure lead spirals wrapped in glass fibre fleece (AGM) are used. This compact and extremely stable design minimises plate spacing, maximises the active surface area and reduces internal resistance. The result is unrivalled starting performance, which can be constantly achieved even under the toughest conditions.Built for the most demanding conditionsThe OPTIMA RedTop is engineered for tough use. Its sealed construction not only prevents acid leakage but also evaporation, making it completely maintenance-free. The robust construction made from impact-resistant polypropylene and its extreme vibration resistance ensure that the battery can withstand vibrations and shocks from demanding driving. Features ModelOPTIMA RedTop RT U 4.2 TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)50 Cold starting current EN (A)815 Dimensions (L x W x H in mm)254 x 175 x 200 ConnectionSAE car pole (positive pole left) Weight (kg)approx. 17.6 FAQs about the OPTIMA RedTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology ensures an extremely robust and vibration-resistant internal structure, a very low internal resistance for maximum starting currents and a longer lifespan compared to traditional batteries with flat plates. It is optimised for maximum starting performance.What is the difference between OPTIMA RedTop, YellowTop and BlueTop?RedTop: A pure high-performance starter battery for maximum starting power. Ideal for vehicles where the starting process is the main load. YellowTop: A dual-purpose battery (starting and supply) for vehicles with high energy requirements due to additional consumers (e.g. winch, large hi-fi systems). BlueTop: Specialist for marine and leisure vehicles, available as a pure starter battery or as a dual-purpose battery.Is this battery suitable for vehicles with many electrical consumers?The RedTop is primarily a starter battery. If your vehicle, in addition to starting, is also equipped with comprehensive features such as powerful hi-fi systems, auxiliary headlights or a winch that are operated when stationary, an OPTIMA YellowTop or BlueTop (dual purpose) is the better choice, as these are designed for deep discharge cycles.Which charger do I need for this AGM battery?For AGM batteries, especially OPTIMA batteries, a modern, microprocessor-controlled charger is recommended that has a special charging curve for AGM batteries. This ensures complete and gentle charging and maximises lifespan.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally harmful substances and must not be disposed of with household waste. You can return your old battery to any retailer that sells new batteries, or to municipal recycling centres free of charge to ensure proper recycling.
The OPTIMA RedTop RT S 4.2 is a revolutionary high-performance starter battery that delivers maximum starting power in a compact and extremely robust housing thanks to the patented SPIRALCELL TECHNOLOGY®. With a nominal voltage of 12 V and a massive cold start current of 815 A, it is the ultimate solution for demanding vehicles that require a reliable and powerful start under all conditions. Its extreme vibration resistance and absolutely maintenance-free, leak-proof construction make it the first choice for hot rods, off-road vehicles, agricultural machinery and all vehicles that need more than just an ordinary battery.Highlights at a glanceMaximum starting power: Offers the highest possible starting performance for reliable engine starting even in extreme temperatures.SPIRALCELL TECHNOLOGY®: Unique spiral cell construction for extreme vibration resistance and longer service life.Extreme vibration resistance: Up to 15 times more vibration resistant than conventional batteries, ideal for tough off-road use or strong vibrations.Absolutely maintenance-free and leak-proof: The sealed AGM construction allows installation in almost any position.Long service life: Lasts up to three times longer than a conventional starter battery.Maximum performance for demanding vehiclesThe OPTIMA RedTop RT S 4.2 was specifically developed for the extreme demands of high-performance vehicles, whose main requirement is a powerful starting impulse. It is the ideal choice for trucks, SUVs, hot rods, classic cars and construction vehicles. Even in seasonal use or after long periods of downtime, it reliably provides the necessary power to start large engines effortlessly. Its compact design and high power density also make it the perfect solution for vehicles with limited installation space.Superior SPIRALCELL TECHNOLOGY®At the core of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high-purity lead spirals are used, which are wrapped in a glass fibre mat (AGM). This compact and extremely robust design minimises the plate spacing, maximises the active surface area and reduces internal resistance. The result is unrivalled starting performance that can be delivered consistently even under the toughest conditions.Built for the most demanding conditionsThe OPTIMA RedTop is designed for tough use. Its sealed construction not only prevents acid leakage but also evaporation, making it absolutely maintenance-free. The robust construction made of impact-resistant polypropylene and the extreme vibration resistance ensure that vibrations and shocks in demanding driving conditions cannot affect the battery. Features ModelOPTIMA RedTop RT S 4.2 TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)50 Cold start current EN (A)815 Dimensions (L x W x H in mm)254 x 175 x 200 ConnectionSAE autopol & side terminals Weight (kg)approx. 17.6 FAQs about the OPTIMA RedTop BatteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology ensures an extremely robust and vibration-resistant internal structure, a very low internal resistance for maximum starting currents and a longer service life compared to traditional batteries with flat plates. It is optimised for maximum starting performance.What is the difference between OPTIMA RedTop, YellowTop and BlueTop?RedTop: A pure high-performance starter battery for maximum starting power. Ideal for vehicles where the starting process is the main load. YellowTop: A dual-purpose battery (starting and supply) for vehicles with high energy demands due to additional devices (e.g. winch, large hi-fi systems). BlueTop: Specialist for marine and leisure vehicles, available as a pure starter battery or as a dual-purpose battery.Is this battery suitable for vehicles with lots of electrical consumers?The RedTop is primarily a starter battery. If your vehicle also includes extensive equipment such as powerful hi-fi systems, additional headlights or a winch that are operated when stationary, an OPTIMA YellowTop or BlueTop (dual purpose) is a better choice, as these are designed for deep discharge cycles.Which charger do I need for this AGM battery?For AGM batteries, especially OPTIMA batteries, a modern, microprocessor-controlled charger is recommended that has a special charging curve for AGM batteries. This ensures full and gentle charging and maximises service life.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally harmful substances and must not be disposed of in household waste. You can return your old battery free of charge to any retailer that sells new batteries or to municipal recycling centres to ensure proper recycling.
The OPTIMA RedTop RT C 4.2 is a revolutionary high-performance starter battery that delivers maximum starting power in a compact and extremely robust housing thanks to the patented SPIRALCELL TECHNOLOGY®. With a nominal voltage of 12 V and an enormous cold start current of 815 A, it is the ultimate solution for demanding vehicles that require a reliable and powerful start in all conditions. Its extreme vibration resistance and absolutely maintenance-free, leak-proof design make it the first choice for hot rods, off-road vehicles, agricultural machinery and all vehicles that need more than just an ordinary battery.Highlights at a glanceMaximum starting power: Offers the highest possible starting power for reliable engine starting even in extreme temperatures.SPIRALCELL TECHNOLOGY®: Unique spiral cell design for extreme vibration resistance and a longer service life.Extreme vibration resistance: Up to 15 times more vibration resistant than conventional batteries, ideal for tough off-road use or heavy vibrations.Absolutely maintenance-free and leak-proof: The sealed AGM design allows installation in almost any position.Long service life: Lasts up to three times longer than a conventional starter battery.Maximum performance for demanding vehiclesThe OPTIMA RedTop RT C 4.2 has been specifically developed for the extreme requirements of high-performance vehicles whose main requirement is a powerful starting impulse. It is the ideal choice for trucks, SUVs, hot rods, classic cars, and construction vehicles. It reliably provides the required energy to easily start large engines even during seasonal use or after long periods out of service. Its compact design and high power density also make it the perfect solution for vehicles with limited installation space.Superior SPIRALCELL TECHNOLOGY®The heart of each OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high purity lead spirals are used which are wrapped in a fibreglass mat (AGM). This compact and extremely stable design minimises plate spacing, maximises the active surface, and reduces internal resistance. The result is unmatched starting performance which can be delivered consistently even under the harshest conditions.Built for the most demanding conditionsThe OPTIMA RedTop is designed for the toughest use. Its sealed construction not only prevents acid leaks but also evaporation, making it completely maintenance-free. The robust construction from impact-resistant polypropylene and the extreme vibration resistance ensure that vibrations and shocks cannot affect the battery in demanding driving conditions. Features ModelOPTIMA RedTop RT C 4.2 TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)50 Cold start current EN (A)815 Dimensions (L x W x H in mm)254 x 175 x 200 ConnectionSAE car pole Weight (kg)approx. 17.6 FAQs about the OPTIMA RedTop BatteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology ensures an extremely robust and vibration-resistant inner structure, a very low internal resistance for maximum starting currents, and a longer life compared to traditional batteries with flat plates. It is optimised for maximum starting performance.What is the difference between OPTIMA RedTop, YellowTop and BlueTop?RedTop: A pure high-performance starter battery for maximum starting power. Ideal for vehicles where the starting process is the main load. YellowTop: A dual-purpose battery (starting and supply) for vehicles with high energy requirements due to additional consumers (e.g. winch, large hi-fi systems). BlueTop: Specialist for marine and leisure vehicles, available as a pure starter battery or as a dual-purpose battery.Is this battery suitable for vehicles with many electrical consumers?The RedTop is primarily a starter battery. If your vehicle, in addition to starting, also has extensive equipment such as powerful hi-fi systems, additional headlights or a winch which is operated when stationary, an OPTIMA YellowTop or BlueTop (Dual Purpose) is the better choice, as these are designed for deep discharge cycles.Which charger do I need for this AGM battery?For AGM batteries, especially for OPTIMA batteries, a modern microprocessor-controlled charger is recommended, which has a special charging curve for AGM batteries. This ensures complete and gentle charging, and maximises service life.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally harmful substances and must not be disposed of in household waste. You can return your old battery free of charge to any dealer selling new batteries or to municipal recycling centres to ensure professional recycling.
The OPTIMA YellowTop YT S 2.1 is a revolutionary 6-volt high-performance AGM battery that, thanks to the patented SPIRALCELL TECHNOLOGY®, combines the starting power of a starter battery with the cycle durability of a supply battery. With a nominal voltage of 6 V and a capacity of 38 Ah, it is the ultimate solution for classic vehicles and special applications that have been retrofitted with modern, high-current consumers. Its extreme vibration resistance and absolutely maintenance-free, leak-proof design make it the first choice for the most demanding 6-volt applications.Highlights at a glance6-volt dual-purpose functionality: Offers starting power and cycle durability for classic vehicles with high energy requirements.SPIRALCELL TECHNOLOGY®: Unique spiral cell design for extreme vibration resistance and longer service life.High cycle durability: Ideal for vintage cars with modern hi-fi systems or additional lighting.Absolutely maintenance-free and leak-proof: The sealed AGM design allows installation in almost any position and protects valuable original materials.Fast recharge: Absorbs charge considerably more quickly than conventional 6-volt batteries.Maximum performance for classic vehicles with modern requirementsThe OPTIMA YellowTop YT S 2.1 was purpose-built for the special requirements of 6-volt vehicles that need more than just starting current. It is the ideal choice for vintage cars, hot rods, and tractors equipped with powerful stereo systems, navigation systems, electric fans or other modern consumers. It reliably provides the high current to start the engine and then powers the additional equipment when stationary without losing performance.Superior SPIRALCELL TECHNOLOGY®At the heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high-purity lead spirals are used which are wrapped with a glass fibre fleece (AGM). This compact and extremely robust design minimises internal resistance, resulting in superior starting power, faster charging and unmatched vibration resistance. This technology makes the YellowTop the perfect hybrid solution for demanding 6-volt systems.Built for the most demanding conditionsThe OPTIMA YellowTop is designed for tough use. Its sealed construction not only prevents acid leakage—which is especially important in valuable vintage cars to avoid damage to paint and bodywork—but also evaporation. This makes it absolutely maintenance-free. The up to 15 times higher vibration resistance compared to conventional batteries ensures that vibrations in older vehicles do not harm the battery. Features ModelOPTIMA YellowTop YT S 2.1 TechnologyAGM Spiralcell Nominal voltage (V)6 Capacity (Ah)38 Cold start current EN (A)460 Dimensions (L x W x H in mm)254 x 90 x 206 ConnectionSAE car pole Weight (kg)approx. 8.9 FAQs on the OPTIMA YellowTop 6V batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY® in a classic car?In classic vehicles, spiral cell technology offers two decisive advantages: Firstly, extreme vibration resistance, which is very useful in older chassis. Secondly, it is completely leak-proof, which protects valuable paint and bodywork from acid damage—a common problem with old wet batteries.What is the difference between the 6V YellowTop and the 6V RedTop?YellowTop (6V): A dual-purpose battery (starting and supply). It is ideal for 6-volt vehicles with additional electrical consumers such as a powerful music system, as it can handle deep discharges. RedTop (6V): A pure high-performance starter battery. It is the right choice if starting is the main load and no significant consumers are operated when stationary.Do I need a special charger for this 6V AGM battery?Yes, it is very important to use a modern, microprocessor-controlled charger that is suitable for both 6 volt and AGM technology. Old, unregulated 6-volt chargers can damage the battery through overvoltage.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally harmful substances and must not be disposed of with household waste. You can return your old battery free of charge to any dealer who sells new batteries or to municipal recycling centres to ensure proper disposal.
The OPTIMA YellowTop YT R 2.7 J is a revolutionary high-performance AGM battery that combines the maximum starting power of a starter battery with the cycle stability of a supply battery thanks to the patented SPIRALCELL TECHNOLOGY®. With a nominal voltage of 12 V, a capacity of 38 Ah and a high cold-start current, it is the ultimate solution for modern vehicles with extensive electrical equipment, powerful hi-fi systems or demanding off-road accessories. Its extreme vibration resistance and absolutely maintenance-free, leak-proof design make it the first choice for the most demanding applications.Highlights at a glanceDual-purpose functionality: Maximum starting power and excellent cycle stability in one battery.SPIRALCELL TECHNOLOGY®: Unique spiral cell design for extreme vibration resistance and a longer service life.High cycle stability: Ideal for vehicles with many electrical consumers and for repeated deep discharges.Absolutely maintenance-free and leak-proof: The sealed AGM design allows installation in almost any position.Fast recharge: Absorbs charge significantly faster than conventional batteries.Maximum performance for demanding vehiclesThe OPTIMA YellowTop YT R 2.7 J was developed specifically for the extreme requirements of modern vehicles, which go far beyond mere starting. It is the ideal choice for vehicles with sophisticated sound systems, auxiliary headlights, winches, hydraulic systems and other energy-intensive consumers. The YellowTop also proves its superior performance and longevity in vehicles with seasonal use or many short journeys that place a heavy load on conventional batteries.Superior SPIRALCELL TECHNOLOGY®At the heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high-purity lead spirals are used, which are wrapped in a glass fibre fleece (AGM). This compact and extremely stable design minimises plate spacing and internal resistance, resulting in outstanding starting power, faster charging and unsurpassed vibration resistance. This technology makes the YellowTop the perfect hybrid solution for starting and supplying.Built for the most demanding conditionsThe OPTIMA YellowTop is designed for tough applications. Its sealed construction not only prevents acid leakage but also evaporation, making it completely maintenance-free. The robust construction made of impact-resistant polypropylene and the up to 15 times higher vibration resistance compared to conventional batteries ensure that vibrations and shocks cannot harm the battery in demanding driving conditions. Battery features ModelOPTIMA YellowTop YT R 2.7 J TechnologyAGM Spiralcell Rated voltage (V)12 Capacity (Ah)38 Cold start current EN (A)460 Dimensions (L x W x H in mm)237 x 129 x 227 ConnectionJIS terminals (positive terminal right) Weight (kg)approx. 11.8 FAQs about the OPTIMA YellowTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology ensures an extremely robust and vibration-resistant internal structure, very low internal resistance for high starting currents and excellent cycle stability. It combines the advantages of a starter battery with those of a deep-cycle battery in a single product.What is the difference between OPTIMA YellowTop and RedTop?YellowTop: A dual-purpose battery (starting and supply). It is ideal for vehicles with high energy requirements due to additional consumers (e.g. winches, large hi-fi systems) as it can withstand deep discharges. RedTop: A pure high-performance starter battery for maximum starting power. It is the right choice if the starting process is the main load and there are no deep discharge cycles.What does the suffix "J" in the model name mean?The letter "J" in the model designation YT R 2.7 J stands for "JIS" (Japanese Industrial Standard). This means that the battery has the narrower, conical battery terminals that are typically used in Japanese and other Asian vehicle brands.Which charger do I need for this AGM battery?For AGM batteries, especially for OPTIMA batteries, a modern, microprocessor-controlled charger is recommended, which has a special charging cycle line for AGM batteries. This ensures a complete and gentle charge and maximises the service life.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally harmful substances and must not be disposed of with household waste. You can return your old battery to any retailer that sells new batteries or to municipal recycling centres free of charge to ensure that it is recycled properly.
The OPTIMA YellowTop YT S 2.7 J is a revolutionary high-performance AGM battery that combines the maximum starting power of a starter battery with the cycle life of a supply battery thanks to its patented SPIRALCELL TECHNOLOGY®. With a nominal voltage of 12 V, a capacity of 38 Ah and a high cold cranking current, it is the ultimate solution for modern vehicles with extensive electrical equipment, powerful hi-fi systems or demanding off-road accessories in a compact form factor.Highlights at a glanceDual-purpose functionality: Maximum starting performance and excellent cycle life in a single battery.SPIRALCELL TECHNOLOGY®: Unique spiral cell design for extreme vibration resistance and longer service life.High cycle life: Ideal for vehicles with many electrical consumers and for repeated deep discharges.Absolutely maintenance-free and leak-proof: The sealed AGM design allows installation in almost any position.Compact design: High performance for vehicles with limited installation space, especially Asian models.Maximum performance for demanding vehiclesThe OPTIMA YellowTop YT S 2.7 J has been purpose-designed for the extreme demands of modern vehicles, which go far beyond simply starting the engine. It is the ideal choice for vehicles with sophisticated sound systems, additional headlights, winches and other energy-intensive consumers. The YellowTop also demonstrates its superior performance and longevity in vehicles used seasonally or for frequent short trips that put a heavy strain on conventional batteries.Superior SPIRALCELL TECHNOLOGY®The heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, highly pure lead spirals are used and wrapped with glass fibre fleece (AGM). This compact and extremely robust design minimises internal resistance, resulting in outstanding starting power, faster charging and unsurpassed resistance to vibration. This technology makes the YellowTop the perfect hybrid solution for starting and supplying.Built for the toughest conditionsThe OPTIMA YellowTop is designed for tough applications. Its sealed construction not only prevents acid leakage, but also evaporation, making it completely maintenance-free. The robust housing made from impact-resistant polypropylene and its up to 15 times higher vibration resistance compared to conventional batteries ensure that vibration and shocks in demanding driving conditions cannot harm the battery. Features ModelOPTIMA YellowTop YT S 2.7 J TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)38 Cold cranking current EN (A)460 Dimensions (L x W x H in mm)237 x 129 x 227 ConnectionJIS terminal posts & side connections Weight (kg)approx. 11.8 FAQs about the OPTIMA YellowTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology provides an extremely robust and vibration-resistant internal structure, very low internal resistance for high starting currents as well as excellent cycle life. It combines the benefits of a starter and deep-cycle battery in a single product.What is the difference between OPTIMA YellowTop and RedTop?YellowTop: A dual-purpose battery (starting and supply). It is ideal for vehicles with high energy requirements from additional consumers (e.g. winch, large hi-fi systems), as it can tolerate deep discharges. RedTop: A pure high-performance starter battery for maximum starting power. It is the right choice when starting is the main load and there is no deep discharge cycles.What does the suffix "J" in the model name mean?The letter "J" in the model designation YT S 2.7 J stands for "JIS" (Japanese Industrial Standard). This means that the battery has the narrower, tapered battery posts typically used in Japanese and other Asian vehicle brands.Which charger do I need for this AGM battery?For AGM batteries, especially for OPTIMA batteries, a modern, microprocessor-controlled charger with a special AGM charging profile is recommended. This ensures a complete and gentle charge and maximises battery lifetime.How should this lead-acid battery be disposed of?Lead-acid batteries contain substances harmful to the environment and must not be disposed of in household waste. You can return your old battery free of charge to any dealer selling new batteries or to municipal collection points to ensure proper recycling.
The OPTIMA YellowTop YT S 2.7 is a revolutionary high-performance AGM battery that, thanks to the patented SPIRALCELL TECHNOLOGY®, combines the maximum starting power of a starter battery with the cycle stability of a supply battery. With a nominal voltage of 12 V, a capacity of 38 Ah and a high cold start current, it is the ultimate solution for modern vehicles with extensive electrical equipment, high-performance hi-fi systems or demanding off-road accessories in a compact design.Highlights at a glanceDual-purpose functionality: Maximum starting performance and excellent cycle stability in one battery.SPIRALCELL TECHNOLOGY®: Unique spiral cell construction for extreme vibration resistance and longer service life.High cycle stability: Ideal for vehicles with many electrical consumers and for repeated deep discharges.Absolutely maintenance-free and leak-proof: The sealed AGM construction enables installation in almost any position.Compact design: High performance for vehicles with limited installation space.Maximum performance for demanding vehiclesThe OPTIMA YellowTop YT S 2.7 was specifically developed for the extreme requirements of modern vehicles that go far beyond mere starting. It is the ideal choice for vehicles with complex sound systems, additional headlights, winches and other energy-intensive consumers. Even in vehicles with seasonal use or many short journeys, which put a heavy strain on conventional batteries, the YellowTop demonstrates its superior performance and longevity.Superior SPIRALCELL TECHNOLOGY®At the heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, highly pure lead spirals are used, which are wrapped in a glass fibre fleece (AGM). This compact and extremely stable design minimises internal resistance, resulting in outstanding starting power, faster charging and unsurpassed vibration resistance. This technology makes the YellowTop the perfect hybrid solution for starting and supplying.Built for the most demanding conditionsThe OPTIMA YellowTop is designed for harsh use. Its sealed construction prevents not only acid leakage but also evaporation, making it absolutely maintenance-free. The robust construction made of impact-resistant polypropylene and up to 15 times higher vibration resistance compared to conventional batteries ensure that vibrations and shocks in demanding driving conditions cannot harm the battery. Features ModelOPTIMA YellowTop YT S 2.7 TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)38 Cold start current EN (A)460 Dimensions (L x W x H in mm)237 x 129 x 227 ConnectionSAE auto post & side connections Weight (kg)approx. 11.8 FAQs about the OPTIMA YellowTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology provides an extremely robust and vibration-resistant internal structure, a very low internal resistance for high starting currents and excellent cycle stability. It combines the benefits of a starter battery with those of a deep-cycle battery in a single product.What is the difference between OPTIMA YellowTop and RedTop?YellowTop: A dual-purpose battery (starting and supply). It is ideal for vehicles with high energy requirements due to additional consumers (e.g. winch, large hi-fi systems), as it tolerates deep discharges. RedTop: A pure high-performance starter battery for maximum cranking power. It is the right choice when starting is the main load and no deep discharge cycles occur.For which vehicles is this compact model particularly suitable?The YT S 2.7 is ideal due to its narrower design for vehicles with limited space in the engine bay, such as many European and Asian models, as well as for custom car projects. Despite its compact size, it supplies enough power for demanding starting procedures and the operation of additional equipment.Which charger do I need for this AGM battery?For AGM batteries, especially for OPTIMA batteries, a modern, microprocessor-controlled charger is recommended, which has a special charging curve for AGM batteries. This ensures a complete and gentle charge and maximises the lifespan.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally harmful substances and must not be disposed of in household waste. You can return your old battery free of charge to any retailer that sells new batteries or to municipal recycling centres to ensure proper recycling.
The OPTIMA YellowTop YT U 4.2 is a revolutionary high-performance AGM battery that combines the maximum starting power of a starter battery with the cycle stability of a supply battery thanks to the patented SPIRALCELL TECHNOLOGY®. With a nominal voltage of 12 V, a high capacity of 55 Ah and an enormous cold start current, it is the ultimate solution for modern vehicles with extensive electrical equipment, commercial vehicles in demanding continuous use or off-road vehicles with winches and additional lighting.Highlights at a glanceDual-purpose functionality: Maximum starting power and excellent cycle stability in one battery.SPIRALCELL TECHNOLOGY®: Unique spiral cell design for extreme vibration resistance and a longer service life.High cycle stability: Ideal for vehicles with many electrical consumers and for repeated deep discharges.Absolutely maintenance-free and leak-proof: The sealed AGM construction allows installation in almost any position.Versatile connections: Equipped with standard round terminals (SAE) and US side terminals (GM) for maximum compatibility.Maximum performance for demanding vehiclesThe OPTIMA YellowTop YT U 4.2 was developed specifically for the extreme requirements of modern vehicles, which go far beyond mere starting. It is the ideal choice for vehicles with sophisticated sound systems, auxiliary headlights, winches, hydraulic systems and other energy-intensive consumers. The YellowTop also proves its superior performance and durability in vehicles with seasonal use, in demanding short-distance operation or in construction vehicles.Superior SPIRALCELL TECHNOLOGY®At the heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high purity lead spirals are used, which are wrapped in a glass fibre fleece (AGM). This compact and extremely stable design minimises internal resistance, resulting in outstanding starting power, faster charging and unsurpassed vibration resistance. This technology makes the YellowTop the perfect hybrid solution for starting and supply.Built for the most demanding conditionsThe OPTIMA YellowTop is designed for tough use. Its sealed construction not only prevents acid leakage but also evaporation, making it absolutely maintenance-free. The rugged construction made of impact-resistant polypropylene and up to 15x higher vibration resistance compared to conventional batteries ensure that vibrations and shocks in demanding driving conditions cannot harm the battery. Features ModelOPTIMA YellowTop YT U 4.2 TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)55 Cold start current EN (A)765 Dimensions (L x W x H in mm)254 x 175 x 200 ConnectionSAE car terminal (positive terminal left) Weight (kg)approx. 19.9 FAQs about the OPTIMA YellowTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology ensures an extremely robust and vibration-resistant internal structure, a very low internal resistance for high starting currents and excellent cycle stability. It combines the advantages of a starter battery with those of a deep-cycle battery in one product.What is the difference between OPTIMA YellowTop and RedTop?YellowTop: A dual-purpose battery (starting and supply). It is ideal for vehicles with high energy requirements due to additional consumers (e.g. winch, large hi-fi systems), as it can withstand deep discharges. RedTop: A pure high-performance starter battery for maximum starting power. It is the right choice when the starting process is the main load and there are no deep discharge cycles.What is the advantage of the double connections (SAE & GM)?The combination of the top-mounted standard round terminals (SAE) and the side threaded terminals (GM standard) offers maximum flexibility. You can connect the main vehicle cables to one type of terminal and accessories such as winches, compressors or hi-fi amplifiers simply and tidily to the second set of terminals.Which charger do I need for this AGM battery?For AGM batteries, especially for OPTIMA batteries, a modern, microprocessor-controlled charger is recommended, which has a special charging profile for AGM batteries. This ensures a complete and gentle charge and maximises service life.How should this lead-acid battery be disposed of?Lead acid batteries contain environmentally hazardous substances and must not be disposed of in household waste. You can return your old battery free of charge to any retailer who sells new batteries or to municipal recycling centres to ensure proper disposal.
The OPTIMA YellowTop YT S 4.2 is a revolutionary high-performance AGM battery that, thanks to the patented SPIRALCELL TECHNOLOGY®, combines the maximum starting power of a starter battery with the cycle stability of a supply battery. With a nominal voltage of 12 V, a high capacity of 55 Ah and enormous cold-start current, it is the ultimate solution for modern vehicles with extensive electrical equipment, commercial vehicles in demanding continuous use or off-road vehicles with winches and additional lighting.Highlights at a glanceDual-purpose functionality: Maximum starting power and excellent cycle stability in one battery.SPIRALCELL TECHNOLOGY®: Unique spiral cell design for extreme vibration resistance and a longer service life.High cycle stability: Ideal for vehicles with many electrical consumers and for repeated deep discharges.Absolutely maintenance-free and leak-proof: The sealed AGM design allows installation in almost any position.Fast recharge: Absorbs charge significantly faster than conventional batteries.Maximum performance for demanding vehiclesThe OPTIMA YellowTop YT S 4.2 was developed specifically for the extreme demands of modern vehicles, which go far beyond just starting. It is the ideal choice for vehicles with sophisticated sound systems, auxiliary headlights, winches, hydraulic systems and other energy-intensive consumers. Even in vehicles with seasonal use, in demanding short-distance operation or in construction vehicles, the YellowTop proves its superior performance and durability.Superior SPIRALCELL TECHNOLOGY®The heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high-purity lead spirals are used, wrapped in a glass-fibre mat (AGM). This compact and extremely stable design minimises internal resistance, resulting in outstanding starting power, faster charging and unsurpassed vibration resistance. This technology makes the YellowTop the perfect hybrid solution for starting and supplying.Built for the most demanding conditionsThe OPTIMA YellowTop is designed for tough use. Its sealed construction not only prevents acid leakage but also evaporation, making it completely maintenance-free. The robust construction made of impact-resistant polypropylene and the up to 15 times higher resistance to vibration compared to conventional batteries ensure that vibrations and shocks encountered in demanding driving conditions do not harm the battery. Features ModelOPTIMA YellowTop YT S 4.2 TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)55 Cold start current EN (A)765 Dimensions (L x W x H in mm)254 x 175 x 200 ConnectionSAE autopol & side terminals Weight (kg)approx. 19.9 FAQs about the OPTIMA YellowTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology provides an extremely robust and vibration-resistant internal structure, very low internal resistance for high starting currents as well as excellent cycle stability. It combines the advantages of a starter battery with those of a deep-cycle battery in a single product.What is the difference between OPTIMA YellowTop and RedTop?YellowTop: A dual-purpose battery (starting and supply). It is ideal for vehicles with high power requirements due to additional consumers (e.g. winches, large hi-fi systems), as it can withstand deep discharges. RedTop: A pure high-performance starter battery for maximum starting power. It is the right choice if starting is the main load and there are no deep discharge cycles.Is this battery suitable for vehicles with automatic start-stop?Although the YellowTop is very cycle-resistant, it was not specifically developed for the requirements of modern start-stop systems. For vehicles with start-stop technology, batteries with EFB or AGM technology in standard form, which are explicitly designed for this purpose, are recommended.Which charger do I need for this AGM battery?For AGM batteries, especially for OPTIMA batteries, a modern, microprocessor-controlled charger is recommended, which has a special charging curve for AGM batteries. This ensures complete and gentle charging and maximises service life.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally harmful substances and must not be disposed of with household waste. You can return your old battery free of charge to any retailer that sells new batteries or to municipal recycling centres to ensure professional recycling.
The OPTIMA YellowTop YT S 5.5 is a revolutionary high-performance AGM battery that combines the maximum starting power of a starter battery with the cycle stability of a supply battery thanks to the patented SPIRALCELL TECHNOLOGY®. With a nominal voltage of 12 V, a very high capacity of 75 Ah and an extreme cold start current, it is the ultimate solution for the most demanding vehicles with enormous energy needs, such as construction vehicles, lorries or heavily modified off-road vehicles.Highlights at a glanceDual-purpose functionality: Maximum starting power and excellent cycle stability in a single battery.SPIRALCELL TECHNOLOGY®: Unique spiral cell construction for extreme vibration resistance and a longer service life.High cycle stability: Ideal for vehicles with many electrical consumers and for repeated deep discharges.Absolutely maintenance-free and leak-proof: The sealed AGM construction allows installation in almost any position.Fast recharging: Absorbs charge significantly faster than conventional batteries.Maximum performance for demanding vehiclesThe OPTIMA YellowTop YT S 5.5 was specifically developed for the most extreme requirements of modern vehicles, which go far beyond mere starting. It is the ideal choice for vehicles with complex sound systems, auxiliary headlights, winches, hydraulic systems and other energy-intensive consumers. Even in vehicles with seasonal use, in demanding short-distance operation or in construction vehicles, the YellowTop demonstrates its superior performance and longevity.Superior SPIRALCELL TECHNOLOGY®At the heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high-purity lead spirals are used, which are wrapped with a glass fibre separator (AGM). This compact and extremely stable design minimises internal resistance, resulting in outstanding starting power, faster recharging, and unsurpassed vibration resistance. This technology makes the YellowTop the perfect hybrid solution for starting and supply.Built for the most demanding conditionsThe OPTIMA YellowTop is designed for hard use. Its sealed design not only prevents acid leakage, but also evaporation, making it absolutely maintenance-free. The robust construction of impact-resistant polypropylene and up to 15 times greater vibration resistance compared to conventional batteries ensure that vibrations and shocks in demanding driving conditions cannot affect the battery. Features ModelOPTIMA YellowTop YT S 5.5 TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)75 Cold start current EN (A)975 Dimensions (L x W x H in mm)325 x 165 x 238 ConnectionSAE autopol & side connections Weight (kg)approx. 26.5 FAQs about the OPTIMA YellowTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology provides an extremely robust and vibration-resistant internal structure, very low internal resistance for high starting currents, as well as excellent cycle stability. It combines the advantages of a starter battery with those of a deep-cycle battery in a single product.What is the difference between OPTIMA YellowTop and RedTop?YellowTop: A dual-purpose battery (starting and supply). It is ideal for vehicles with high energy demands from additional consumers (e.g. winches, large hi-fi systems), as it can withstand deep discharges. RedTop: A pure high-performance starter battery for maximum starting power. It is the right choice if the starting process is the main load and there are no deep discharge cycles.Is this battery suitable for vehicles with automatic start-stop?Although the YellowTop is very cycle-resistant, it was not specifically designed for the requirements of modern start-stop systems. For vehicles with start-stop technology, batteries with EFB or AGM technology in standard design, which are explicitly designed for this purpose, are recommended.Which charger do I need for this AGM battery?For AGM batteries, especially for OPTIMA batteries, a modern, microprocessor-controlled charger is recommended, which has a special charge curve for AGM batteries. This ensures a complete and gentle charge and maximises service life.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally harmful substances and must not be disposed of in household waste. You can return your old battery free of charge to any retailer who sells new batteries or to local recycling centres to ensure proper disposal.
The OPTIMA BlueTop BT DC 4.2 is a revolutionary high-performance AGM battery that, thanks to the patented SPIRALCELL TECHNOLOGY®, offers exceptional performance as both a starter and deep-cycle supply battery. With a nominal voltage of 12 V, a capacity of 55 Ah and enormous starting power, it is the ultimate solution for demanding marine and leisure vehicles. Its extreme vibration resistance and fully maintenance-free, leak-proof construction make it the most reliable choice for anyone who needs maximum performance and operational safety both on the water and on the road.Highlights at a glanceSPIRALCELL TECHNOLOGY®: Unique spiral cell construction for extreme vibration resistance and longer service life.Dual-purpose functionality: Outstanding performance as a starter battery for the engine and as a cycle-proof supply battery for the on-board electronics.Extreme vibration resistance: Up to 15 times more vibration resistant than conventional batteries, ideal for tough use on the water.Absolutely maintenance-free and leak-proof: The sealed AGM construction allows installation in almost any position.High charging efficiency: Charges back up significantly faster than conventional lead-acid batteries.Maximum performance for marine and leisure vehiclesThe OPTIMA BlueTop BT DC 4.2 has been developed specifically for the extreme demands in marine and motorhome applications. It delivers the massive power needed to start boat engines and at the same time reliably and long-lastingly supplies energy-hungry consumers such as trolling motors, sound systems, navigation devices and the galley. Its ability to withstand hundreds of charge and discharge cycles makes it the perfect all-in-one solution for a long and carefree day on the water or on holiday.Superior SPIRALCELL TECHNOLOGY®At the heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high-purity lead spirals are used, which are wrapped with a glass-fibre mat (AGM). This compact and extremely stable design minimises the plate gap, maximises the active surface area and reduces internal resistance. The result is an unrivalled starting performance, extreme vibration resistance, longer service life and faster rechargeability.Built for the most demanding conditionsThe OPTIMA BlueTop is designed for tough use. Its sealed construction not only prevents acid leakage but also evaporation, making it completely maintenance-free. The robust construction and extreme vibration resistance ensure that waves, vibrations and shocks cannot harm the battery. Thanks to its low self-discharge, it is also the ideal choice for seasonal use. Features ModelOPTIMA BlueTop BT DC 4.2 TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)55 Cold start current EN (A)765 Dimensions (L x W x H in mm)254 x 175 x 200 ConnectionDual connection (SAE autopole & threaded stud) Weight (kg)approx. 19.9 FAQs about the OPTIMA BlueTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology provides an extremely robust and vibration-resistant internal structure, a very low internal resistance for high starting currents and a longer service life compared to traditional batteries with flat plates. It combines the benefits of a starter battery with those of a deep-cycle battery.What is the difference between OPTIMA BlueTop, YellowTop and RedTop?BlueTop: Specialist for marine and leisure vehicles, often with additional threaded connections. Available as a pure starter battery (dark grey housing) and as a dual-purpose battery (light grey housing) like this model. YellowTop: A pure dual-purpose battery for land vehicles with high energy requirements (e.g. off-road vehicles with winch, large hi-fi systems). RedTop: A pure high-performance starter battery for maximum starting power.Which charger do I need for this AGM battery?For AGM batteries, and especially for OPTIMA batteries, a modern, microprocessor-controlled charger is recommended which has a special charging profile for AGM batteries. This ensures complete and gentle charging and maximises the service life.Can I install the battery in any position?Yes, thanks to the sealed AGM spiral cell construction, the battery is leak-proof and can be mounted in almost any position, offering additional flexibility when installing in tight spaces on boats or motorhomes.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally harmful substances and must not be disposed of with household waste. You can return your old battery free of charge at any retailer selling new batteries or at municipal recycling centres to ensure proper disposal.
The OPTIMA BlueTop BT DC 5.0 is a revolutionary high-performance AGM battery which, thanks to the patented SPIRALCELL TECHNOLOGY®, offers exceptional performance as a starter and deep-cycle supply battery. With a nominal voltage of 12 V, a high capacity of 66 Ah and enormous starting power, it is the ultimate solution for demanding marine and leisure vehicles. Its extreme vibration resistance and the absolutely maintenance-free, leak-proof construction make it the most reliable choice for anyone who needs maximum performance and operational reliability on the water and on the road.Highlights at a glanceSPIRALCELL TECHNOLOGY®: Unique spiral cell design for extreme vibration resistance and a longer service life.Dual-purpose functionality: Outstanding performance as a starter battery for the engine and as a cycle-resistant supply battery for the on-board electronics.Extreme vibration resistance: Up to 15 times more vibration-resistant than conventional batteries, ideal for tough use on the water.Absolutely maintenance-free and leak-proof: The sealed AGM design allows installation in almost any position.High charging efficiency: Recharges significantly faster than conventional lead-acid batteries.Maximum performance for marine and leisure vehiclesThe OPTIMA BlueTop BT DC 5.0 was specifically developed for the extreme demands in the marine and motorhome sectors. It delivers the massive power required to start boat engines and at the same time reliably and durably supplies power-hungry consumers such as trolling motors, sound systems, navigation devices and the galley. Its ability to withstand hundreds of charge and discharge cycles makes it the perfect all-in-one solution for a long and carefree day on the water or on holiday.Superior SPIRALCELL TECHNOLOGY®At the heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, high-purity lead spirals are used, wrapped in glass fibre mat (AGM). This compact and extremely stable design minimises plate spacing, maximises the active surface area and reduces internal resistance. The result is unrivalled starting performance, extreme vibration resistance, longer life and faster rechargeability.Built for the most demanding conditionsThe OPTIMA BlueTop is designed for heavy-duty use. Its sealed construction not only prevents acid leaks but also evaporation, making it absolutely maintenance-free. The robust build and extreme vibration resistance ensure that wave impact, vibrations and shocks cannot harm the battery. Thanks to its low self-discharge, it is also the ideal choice for seasonal use. Features ModelOPTIMA BlueTop BT DC 5.0 TechnologyAGM Spiralcell Rated voltage (V)12 Capacity (Ah)66 Cold start current EN (A)845 Dimensions (L x W x H in mm)309 x 175 x 200 ConnectionDual connection (SAE Autopole & threaded stud) Weight (kg)approx. 23.1 FAQs about the OPTIMA BlueTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology provides an extremely robust and vibration-resistant internal structure, a very low internal resistance for high starting currents and a longer life compared to traditional batteries with flat plates. It combines the advantages of a starter battery with those of a deep-cycle battery.What is the difference between OPTIMA BlueTop, YellowTop and RedTop?BlueTop: Specialist for marine and leisure vehicles, often with additional threaded connections. Available as a pure starter battery (dark grey housing) and as a dual-purpose battery (light grey housing) like this model. YellowTop: A pure dual-purpose battery for land vehicles with high energy requirements (e.g. off-road vehicles with winch, large hi-fi systems). RedTop: A pure high-performance starter battery for maximum starting power.Which charger do I need for this AGM battery?For AGM batteries, especially OPTIMA batteries, a modern, microprocessor-controlled charger with a special charging characteristic for AGM batteries is recommended. This ensures a complete and gentle charge and maximises service life.Can I install the battery in any position?Yes, thanks to the sealed AGM spiral cell design, the battery is leak-proof and can be mounted in almost any position, offering additional flexibility for installation in tight spaces on boats or motorhomes.How should this lead battery be disposed of?Lead batteries contain environmentally harmful substances and must not be disposed of in household waste. You can return your old battery to any retailer that sells new batteries or at local recycling centres free of charge to ensure proper recycling.
The OPTIMA BlueTop BT DC 5.5 is a revolutionary high-performance AGM battery that offers exceptional performance as a starter and deep-cycle supply battery thanks to the patented SPIRALCELL TECHNOLOGY®. With a nominal voltage of 12 V, a high capacity of 75 Ah and enormous starting power, it is the ultimate solution for demanding marine and leisure vehicles. Its extreme vibration resistance and absolutely maintenance-free, leak-proof construction make it the most reliable choice for anyone who needs maximum performance and operational safety on the water and on the road.Highlights at a glanceSPIRALCELL TECHNOLOGY®: Unique spiral cell construction for extreme vibration resistance and a longer service life.Dual-purpose functionality: Superior performance as a starter battery for the engine and as a cycle-stable supply battery for the on-board electronics.Extreme vibration resistance: Up to 15 times more vibration resistant than conventional batteries, ideal for tough use on the water.Absolutely maintenance free and leak-proof: The sealed AGM construction enables installation in almost any position.High charging efficiency: Charges much faster than conventional lead-acid batteries.Maximum performance for marine and leisure vehiclesThe OPTIMA BlueTop BT DC 5.5 was specifically developed for the extreme requirements in the marine and motorhome sector. It delivers the massive power needed to start large boat engines, while also reliably and durably supplying energy-intensive consumers such as trolling motors, sound systems, navigation devices and the on-board kitchen. Its ability to withstand hundreds of charging and discharging cycles makes it the perfect all-in-one solution for a long, carefree day on the water or on holiday.Superior SPIRALCELL TECHNOLOGY®At the heart of every OPTIMA battery is the unique SPIRALCELL TECHNOLOGY®. Instead of flat lead plates, highly pure lead spirals are used, which are wrapped in a glass fibre mat (AGM). This compact and extremely stable design minimises plate spacing, maximises the active surface area and reduces internal resistance. The result is unsurpassed starting performance, extreme vibration resistance, longer service life and faster recharging capability.Built for the most demanding conditionsThe OPTIMA BlueTop is designed for tough use. Its sealed construction not only prevents acid leakage, but also evaporation, making it absolutely maintenance free. The robust design and extreme vibration resistance ensure that waves, vibrations and shocks cannot damage the battery. Thanks to its low self-discharge, it is also the ideal choice for seasonal operation. Characteristics ModelOPTIMA BlueTop BT DC 5.5 TechnologyAGM Spiralcell Nominal voltage (V)12 Capacity (Ah)75 Cold start current EN (A)975 Dimensions (L x W x H in mm)325 x 165 x 238 ConnectionDual connection (SAE autopole & threaded stud) Weight (kg)approx. 26.5 FAQs about the OPTIMA BlueTop batteryWhat is the main advantage of SPIRALCELL TECHNOLOGY®?The spiral cell technology ensures an extremely robust and vibration-resistant internal structure, a very low internal resistance for high starting currents and a longer service life compared to traditional batteries with flat plates. It combines the advantages of a starter battery with those of a deep-cycle battery.What is the difference between OPTIMA BlueTop, YellowTop and RedTop?BlueTop: Specialist for marine and leisure vehicles, often with additional threaded connections. Available as a pure starter battery (dark grey housing) and as a dual-purpose battery (light grey housing) like this model. YellowTop: A pure dual-purpose battery for land vehicles with high energy requirements (e.g. off-road vehicles with winches, large hi-fi systems). RedTop: A pure high-performance starter battery for maximum starting power.Which charger do I need for this AGM battery?For AGM batteries, especially for OPTIMA batteries, a modern microprocessor-controlled charger with a specific charging curve for AGM batteries is recommended. This ensures a complete and gentle charge and maximises service life.Can I install the battery in any position?Yes, thanks to the sealed AGM spiral cell construction, the battery is leak-proof and can be installed in almost any position, providing extra flexibility when fitting in confined spaces on boats or motorhomes.How should this lead-acid battery be disposed of?Lead-acid batteries contain environmentally harmful substances and must not be disposed of in household waste. You can return your old battery free of charge to any dealer who sells new batteries or to local recycling centres to ensure proper disposal.