OPTIMA BlueTop BT DC 5.0 AGM lead-acid battery 12V 66Ah

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 glance

• SPIRALCELL 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 vehicles

The 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 conditions

The 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

FAQs about the OPTIMA BlueTop 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 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.