Optima Batteries 8004-003 34/78 RedTop Starting Battery 12-Volt, 800 Cold Cranking Amps, Size: 10" x 6 7/8" x 7 13/16" tall, Weight: 38.8 pounds, Dual SAE &amp; GM Posts Reserve capacity of 100 minutes for constant performance Optimal starting power even in bad weather This item is not for sale in Catalina Island. Battery Charger:13.8 to 15.0 volts, 10 amps maximum, approximately for six to twelve hours. Alternator:13.3 to 15 volts, no amperage limit Note: Fifteen times more resistant to vibration for durability. Mountable in virtually any position. May include convenient carrying handle for ease of placement in battery holder.