Marcum King Battery 12Volt 18ahMarCum realizes that there are certain systems designed for open water which are also run on ice. These units typically have a higher power draw designed for deep cycle batteries. The MarCum King Lithium LiFePO4 at 12V18AH delivers deep cycle performance in a compact, portable form factor. The MarCum King is equipped with a BMS circuit that protects the bat tery from overcharge, over dis charge, and short circuiting. As a sportsmen, you rely on these