Optima Blue Top D27M Battery So your heading to the reef or down the creek with the minnkota or maybe towing a board. Whatever your doing on the water you need a battery that wont let you down. So why the Optima Blue Top D27M? Patented spiral cell technology means 15 times more vibration resistance and this means a lot

Optima Blue Top D31M Battery Optima Blue Top D31M. Where do you start. Optima’s patented spiral cell technology means they are up to 20% more efficient than leading brand batteries. Generating high cranking amps and extra starting power for demanding inboard and outboard motors. Optima D31M is guaranteed leak proof and can be mounted almost anywhere it will fit upside