Electrochemical system: Lithium/Manganese Dioxide International size according to IEC: CR123A Size: CR123A Weight: 16.0 grammes Dimensions (ø x H): 16.5 x 34.2mm Voltage: 3V Nominal capacity: 1300mAh Operating temperature: -40° to 55° C Storage temperature: 15° to 25° C Minimum shelf life (MHD): 10