Lithium Prismatic 3.2V 40Ah LiFePO4 battery cell Parameters of Lithium Prismatic 3.2V 40Ah LiFePO4 battery cell NO. Item Specification Nominal capacity 40Ah@ 0.3C(12A)discharge Nominal voltage 3.2 V Dimension 46(H)*116(W)*178(L)mm Impedance �2mΩ Charge cut-off voltage 3.65 V Charge current Standard charge:0.3C5A Rapid charge: 1C5A Standard Charging method 0.3C5A constant current(CC)charge to 3.65V,then constant voltage 3.65V(CV)charge till charge current decline to�0.02C5A Charging time Standard charge:5.0h(reference) Rapid charge:3.0h(reference) Max. discharge current 1.0 C5A Max instant discharge current 2.0 C5A Discharge cut-off voltage 2.0 V Operating temperature Charge:0°C ~ 45°C Discharge:-20°C ~ 60°C Storage temperature -10°C ~ 45°C Storage humidity