BikeMaster DLFP-10L-B Lithium-Ion Battery The most advanced high-power Lithium Iron Phosphate battery technology from BikeMaster Ultra high cranking amps from a super lightweight battery. Only 1/3 the weight of a lead acid battery Cylindrical cell with energy storage welding technology for higher output Built-in charge and equalizing protection board, preventing battery from over-charging Remarkably low self-discharge for extended storage periods up to one year