Optima Batteries 8027-127 D27M BlueTop Starting and Deep Cycle Marine Battery Pure lead spiralcell design allows for lead to be used in its purest form.C20 Capacity:66 Ah Spiralcell technology for superior vibration resistance and extended life Solid cast cell connections for increased durability and maximum plate height Tightly compressed cells for added vibration resistance. Reserve Capacity at 25 Amps: 140 Minutes This item is not for sale in Catalina Island CCA - 800 Ampere