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3.6v 21700 4000mah 5C Discharge Cylinder Lithium Ion Battery Cell

3.6v 21700 4000mah 5C Discharge Cylinder Lithium Ion Battery Cell

21700 battery is instead of the 18650 cell , it is the best chioce for EV,electronic cigarette , power toy , smart robot,flashlight and so on .
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Item

 

Parameters

 

Remark

Rated Capacity

Typical

4000mAh

standard discharge(0.2C)

after standard charge

Minimum

3950mAh

Alternating 

Internal Resistance

≤20mΩ


Nominal   Voltage

 3.7V    

mean   operation voltage

Voltage at end of Discharge

2.5V

discharge cut-off voltage

Charging at end of Voltage

4.20V


Standard Charge

Constant Current 0.2C Constant 

Voltage 4.20V 0.02C cut-off

charge time:Approx 6.0h

Standard Discharge

Constant Current 0.2C end Voltage 3.0V


Fast Charge

Constant Current 1C Constant 

Voltage 4.20V 0.02C5A cut-off

charge time:Approx 2.5h

Fast Discharge

Constant Current 1C end Voltage 3.0V


Cycle Characteristic

500times(100%DOD)

600 times(80%DOD)

1000 times(50%DOD)

the residual capacity is no less 

than 80% of rated capacity at 1C rate.

Maximum Continuous

 Discharge Current

3C

pulse discharge current:   5 C

Operation Temperature Range

Charge:0~55

Discharge:-20~60

60±25%R.H. bare battery

Storage Temperature Range

Less than 1 year:-20~25

Less than 3 months:-20~45

60±25%R.H. at the shipment 


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