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

[HKJ]

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

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

This is a high current 21700 cell.

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

[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

 

[MAD777]

Looks like a fantastic cell.... Thanks HKJ

 

[orbital]

+

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 👍