Nominal voltage: 3.7V Nominal capacity: 40AH Maximum discharge current 10C Maximum charging voltage: 4.20V Discharge cut-off voltage: 2.75V Internal resistance: 《0.8 milliohms Charging temperature (℃): 0 to 45 Discharge temperature (℃): -20 to 60 Dimensions (mm):9.8(thickness)x96.2(width)x320(length)