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

HKJ

Flashaholic
Joined
Mar 26, 2008
Messages
9,715
Location
Copenhagen, Denmark
[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
 

orbital

Flashlight Enthusiast
Joined
Feb 8, 2007
Messages
3,387
Location
WI
+

10 years ago you'd never, never thought it possible for a single cell & single 'large die' emitter can do what it does today.

The NB90.16 emitter in the Amutorch XT45 (using single high Amp 21700) on full turbo has to be seen to believe,
mind boggling amount of light for a self defense situation.


Thanks HKJ for all your contributions 👍
 
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