SK P318 Nominal voltage: 3.7V Nominal capacity: 31.8AH Maximum charging voltage: 4.20V Discharge cut-off voltage: 2.75V Internal resistance: 0.7 milliohms Charging temperature (℃): 0 to 45 Discharge temperature (℃): -20 to 60 Dimensions (mm):6(thickness)x95(width)x320(length)