Battery Type BK063465A Material of Case Aluminium Nominal Voltage 3.7 V Nominal Capacity 1250 mAh Internal Resistance 30-50 mW Discharge Cut-off Voltage 2.75V/Battery Max Charge Current 1C Max Discharge Current 1C Max Charge Voltage 4.2V Charge method CC/CV (constant current/constant voltage) Dimension Thickness: 46.6 -0.4 mm Width: 34.0 -0.5 mm Height: 64.6 -0.3 mm Weight About 28.5 g Operating Temperature: Charging Temperature: 0~45°C Discharging Temperature: -20~60°C Storage Temperature 1 month -20~60°C 3 month -20~45°C 1 year -20~25°C Relative Humidity 65±20% Visual Requirements Defects, such as scratches, flaws, dirty spots, rust, deformation, discoloration, leakage, etc., which damage commercial values shall not be presented. Voltage of shipment 3.70-3.90V Other explanation Purpose External dimension picture There is not a picture temporarily Material object picture There is not a picture temporarily