Blue

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.

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 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.