Description: 7.2V 5200mAh 18650 Emergency Lighting Lithium Battery Product No.: HG4AE411 Cell model:  LG18650 / 2600mAh / 3.7V Battery Specification: 2S2P / 5200mAh / 7.2V Nominal voltage: 7.2V Nominal capacity:  5200mAh Charging voltage:  8.4V Charging current: 1040mA Discharge current: 1040mA Maximum discharge current: 2600mA Discharge cut-off voltage: 5.5V Internal resistance : ≤150mΩ Delivery voltage: 7.2-7.8V Battery weight: 150g Product size: 75 * 70 * 21mm (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: security, fire protection, Emergency Lighting powered by Lithium Battery