Description: 3.7V 4900mAh GPS Navigator Lithium Battery Product No.: HG1CE5511 Cell model:  4900mAh / 3.7V Battery Specification: 4900mAh / 3.7V Nominal voltage: 3.7V Nominal capacity: 4900mAh Charging voltage: 4.2V Charging current: 980 mA Discharge current: 980 mA Maximum discharge current: 5000mA Discharge cut-off voltage: 2.75V Internal resistance : ≤ 150m Ω Delivery voltage: 3.6-4.0v Battery weight: 65g Product size: 83.5 * 75.5 * 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, power management, etc Application field: GPS Navigator, telecommunication & communication devices powered by Lithium Battery