Solarix XCube 12V 8Ah Rechargeable Lithium Battery – Nominal Voltage 12.8V, Nominal Capacity 8Ah , Rated Energy 102.4Wh, Rechargeable LiFePO4 Li-ion Battery , BMS Function Overcharge and Discharge, Overcurrent and Temperature Protection, Recommended Charge Voltage 14.4V – 14.6V, Discharge Cut-off Voltage 10.8V, Max. Continuous Charge/Discharge Current 8A , Long Service Life Of Around 3000 Cycles, Retail Box, 2 Year Warranty