Description: 3.6V 3350mAh 18650 Massager Lithium-ion Battery Product No.: HG1AE4924 Cell model:  Panasonic 18650 / 3400mAh / 3.6V Battery Specification: 1S1P/ 3350mAh / 3.6V Nominal voltage: 3.6V Nominal capacity:  3350mAh Charging voltage:  4.2V Charging current: 670mA Discharge current: 670mA Maximum discharge current: 1675mA Discharge cut-off voltage: 2.75V Internal resistance : ≤ 140m Ω Delivery voltage: 3.7-3.9V Battery weight: 46g Product size: length 69 * diameter 19.5mm (max) Operating temperature: Charging temperature: 0-45°C; Discharge temperature: -20-60°C Storage temperature environment: 1month - 20-60 ° C; 3months - 20-45 ° C; 12months - 20-25 ° C Relative humidity: 65 ± 20% Battery structure: Lithium Battery protection: short circuit protection, overcharge protection, over discharge protection, over current protection, etc Application field: portable hand-held equipment powered by Lithium-ion Battery