Description: 3.6V 5200mAh 18650 Bluetooth Speaker Lithium-ion Battery Product No.: HG2AE2932 Cell model:? Samsung 18650 / 2600mAh / 3.6V Battery Specification: 1S2P / 5200mAh / 3.6V Nominal voltage: 3.6V Nominal capacity:? 5200mAh Charging voltage:? 4.2V Charging current: 1040mA Discharge current: 1040mA Maximum discharge current: 2600mA Discharge cut-off voltage: 2.75V Internal resistance : ≤160mΩ Delivery voltage: 3.6-3.8V Battery weight: 95g Product size: 67.5 * 37.5 * 18.7mm (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: smart home, small appliances powered by Lithium-ion Battery