Description: 3.6V 12000mAh Headlamp Lithium-ion Battery Product No.: HG4AE4241 Cell model:  LG18650 / 3000mAh / 3.6V Battery Specification: 1S4P / 12000mAh / 3.6V Nominal voltage: 3.6V Nominal capacity:  12000mAh Charging voltage:  4.2V Charging current: 2400mA Discharge current: 2400mA Maximum discharge current: 12000mA Discharge cut-off voltage: 2.75V Internal resistance : ≤80mΩ Delivery voltage: 3.4-3.6V Battery weight: 200g Product size: 70.5 * 37 * 37mm (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: portable lighting, Flashlight powered by Lithium-ion Battery