The 27-66 12V 40AH LiFePO4 Lithium Car Battery combines high cranking power (1300CCA), deep-cycle capability, and a built-in 200A BMS for automotive and marine applications. Its lightweight LiFePO4 chemistry ensures longer lifespan, faster charging, and… What Makes the 27-66 12V 40AH LiFePO4 Lithium Car Battery Superior