Description: 3.6V 5000mAh 21700 With USB Flashlight Lithium Battery Product No.: HG1AE5492 Cell model:  21700 / 5000mAh / 3.6V Battery Specification: 5000mAh / 3.6V Nominal voltage: 3.6V Nominal capacity:  5000mAh Charging voltage:  4.2V Charging current: 1000mA Discharge current: 1000mA Maximum discharge current: 5A Discharge cut-off voltage: 2.75V Internal resistance : ≤ 80m Ω Delivery voltage: 3.5-3.9V Battery weight: 65g Product size: 76.5 * 21.7mm (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, overdischarge protection, overcurrent protection, etc. Application field: Flashlight, portable lighting, Taticle Flashlight powered by Lithium-ion Battery