Great For High Watt Demand Electrical System Won't Leak Like Stock Batteries - Avoiding Damage To Computer & Wiring Harness Spiralcell? Technology - Lasts 3X Longer & Can Sit 3X Longer Than Other Batteries 750 Cold Cranking Amps 10 L x 6-7/8 W x 7-13/16 H Deep Cycle 870 Cranking Amp 36-Month Free Replacement Inside this unusual battery, a completely sealed, maintenance-free, lead-acid unit, is a six-pack of Spiralcell? Technology. Traditional batteries have a stack of thick lead plates surrounded by acid. The OPTIMA? batteries feature two thin lead plates wound into a tight spiral cell, with an absorbent glass-mat in between to hold the electrolyte solution. This unique design allows for more power and increased energy, resulting in quick, reliable starts. OPTIMA? batteries are the first and only batteries to feature Spiralcell? Technology. It provides constant performance quality keeping your battery running at the same level as it's being discharged.