English technical specificationsDescription BATTERY LiB-909YHNCZ for ZTE CORPORATION Battery Specifications 38V400mAhRechargeable Lithium-ion cell NEC IMP300540-1DESAY LITHIUM-IONBATTERY SPECIFICAT

ischarge current: 80mA (0.2C)End voltage: 2.5V4Charge TimeLess than the value in bellow tableAt 20℃.Charge current: 400mACharge voltage: 4.2V5Cycle LifeMore than 300 cyclesCharge: CC-CV (400mA-4.2V), Discharge: 80mA to 2.5V at 20±2℃.6Internal ResistanceLess than the value in bellow tableAfter rated charge at 20℃.AC Impedance, 1kHz7Self-discharge RateLess than 20% of rated capacityAfter 28 days storage at 20±2℃.8Storage PerformanceMore than 80% of rated capacityAfter 90 days storage at 20±2℃.9Impact TestNo leakage, No fire or explosionEndure 1.2-m drop test on concrete surface 10Over-discharge ProtectionVoltage: 2.5VRecover the voltage to over 3.0V by charging 11Over-charge ProtectionVoltage: 4.2VDischarge until the voltage is below 4.0V 12High Temperature TestNo leakage, No fire or explosionPut the battery in oven at 85±2℃ for 6 hours.13Low Temperature TestNo leakage, No fire or explosionPut the battery in chamber at -20±2℃ for 6 hours