Optima 12 volt Marine Battery - Blue Top.

The OPTIMA BlueTop battery is available as a starting or deep cycle battery for marine and RV applications and has all the valuable characteristics of its two brothers - the RedTop and YellowTop. It's perfect for boats with electric trolling motors, onboard electronics or stereo systems and RV's with “creature comforts” that tend to drain batteries quickly. The BlueTop is the battery for those who simply need a sure-starting, strong cranking, maintenance-free power source.

Benefits and Applications:

Dual-purpose

• Deep cycling and cranking power all packed into one battery.

Longer life

• Lasts up to 2 times longer than traditional flat-plate batteries.

Optimal starting power

• More power in the initial 1, 3, 5, and 10 seconds of the starting process than comparably rated conventional lead-acid batteries.

Higher reserve capacity

• Constant performance quality, which keeps your battery running at the same level even as it's being discharged.

Longer shelf-life (lower self-discharge)

• Ideal for seasonal use, fully charged it can sit unused for up to 12 months at room temperature (or below) and still start a vehicle.

Vibration resistance

• 15 times more resistant to vibration than traditional lead-acid batteries.

Leak-proof

• Mountable in almost any position.