A battery Model 18650-220 
 2 Shell material nickel plated steel 
 3 dimensions (including the PT film) diameter: 18.2 ± 0.1mm 
 Height: 64.5 ± 0.1mm 
 4 rated voltage of 3.7V 
 5 rated capacity of 2200mAh 
 6 internal resistance ≤ 80mΩ 
 Charge limit voltage of 4.20V 
 8 charging conditions (recommended) 1250-2500mA constant current charging to 4.20V 
 Constant voltage 4.2V charge to current less than 50mA 
 9 discharge cut-off voltage of 2.75V 
 10 maximum allowable continuous discharge current of 2.5A (1C) 
 11 the maximum allowable pulse discharge current 5.0A (2C) 
 12 500 cycle life (≥ 60% C5mAh) 
 13 Weight about 45g 
 14 Using the charging temperature: -20 ~ +45 ° C 
 Discharge: -20 ~ +60 ° C 
 Storage: -10 to +50 ° C 
 1.15 use the relative humidity of 65 ± 20% 



 The type the Cell: ICR18650 
 Battery the Capacity: 2200mAh 
 Nominal Voltage: 3.7V 

 Charging Method: CC-CV 
 Charging Voltage: 4.2V 
 Charging the Current: Std. 1250mA 
 Charging the Time: 3hrs 
 Maximum continuous discharge current: 25A 

 Ambient Temperature: 
 Charge: -20 --- +45 ° C 
 Discharge: -20 --- +60 ° C. 
 The Storage: -10 --- +50 ° C.