Panasonic NCR18650G1NCR18650G1 Panasonic Lithium Ion 3450mAh High Capacity Cylindrical BatteryUsage and CompositionCellular and mobile phones, PDAs, notebook computers, MP3 players, militaryLithium Ion (LiIon) CylindricalBattery SpecificationsVoltage 3.6VWatt Hour 12.4WhNomial Capacity 3.45AhTypical Capacity 3.55AhMaximum Continuous Discharge Current 6.9APhysical DimensionsSize 18650Width 18.5mmHeight 65.3mmWeight 47.5g