Test/review of Vapcell INR21700 4200mAh T42 (Red) 2021

HKJ

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[size=+3]Vapcell INR21700 4200mAh T42 (Red) 2021[/size]

DSC_4782.jpg


Official specifications:
  • Model: T42
  • Size: 21.5*70.1mm
  • Typical Capacity: 4200mAh (0.2C discharge)
  • Min capacity: 4000mAh (0.2C discharge)
  • Nominal voltage: 3.60V
  • Max Continuous Discharge Current: 35A
  • Max Discharge Current: 50A with 80°C cut
  • End-of-charge voltage: 4.20V
  • End-of-discharge Voltage: 2.5V
  • Weight: 70g ( Appr)
  • Internal resistance: 8mOhm AC 1kHz
  • Standard Charge: 4000mA,CCCV 100mA cut-off
  • Quick Charge Current: 8000mA

ell%20INR21700%204200mAh%20T42%20(Red)%202021-info.png


This is a high current 21700 cell.

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20INR21700%204200mAh%20T42%20(Red)%202021-Capacity.png


The two cells matches nicely and capacity only drops slightly even with 30A load, as usual the temperature goes up at high load.

0INR21700%204200mAh%20T42%20(Red)%202021-Temp-15.0.png


0INR21700%204200mAh%20T42%20(Red)%202021-Temp-20.0.png


0INR21700%204200mAh%20T42%20(Red)%202021-Temp-30.0.png


0%204200mAh%20T42%20(Red)%202021-CapacityTimeHours.png


R21700%204200mAh%20T42%20(Red)%202021-CapacityTime.png


l%20INR21700%204200mAh%20T42%20(Red)%202021-Energy.png


21700%204200mAh%20T42%20(Red)%202021-PowerLoadTime.png


NR21700%204200mAh%20T42%20(Red)%202021-TripCurrent.png


l%20INR21700%204200mAh%20T42%20(Red)%202021-Charge.png


Ah%20T42%20%28Red%29%202021-pulse-1.0%2010%2010-IR.png




[size=+3]Conclusion[/size]

This is a good high current cell.



[size=+3]Notes and links[/size]

The batteries was supplied by Vapcell for review.

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries
 
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