Optima Batteries 8016-103 D34M BlueTop Starting and Deep Cycle Marine Battery 12-Volt, 750 Cold Cranking Amps, Size: 10 inches x 6 7/8 inches x 7 13/16 inches tall, Weight: 43.5 pounds, Dual SAE &amp; 5/16 inches Stainless Steel Stud Posts. 55 Ah C20 capacity Optimal starting power even in bad weather Mountable in virtually any position. Works well as a boat battery or RV battery Fifteen times more resistant to vibration for durability Reserve capacity of 120 minutes for constant performance Cranking Amps - 870 Ampere / Marine Cranking Amps - 870 ampere