OPTIMA RedTop RT S 3.7 AGM lead-acid battery 12V 44Ah

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 glance

• Maximum 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 vehicles

The 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 conditions

The 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

FAQs about the OPTIMA RedTop battery

What 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.