HKJ
Flashaholic
[size=+3]Vapcell INR21700 4000mAh (Gold) 2019[/size]
Official specifications:
This is a high current 21700 cell with good capacity.
The two cells match nicely, but do not like a continuous 30A discharge (I only tried that on the first cell). The capacity donot change much with load.
[size=+3]Conclusion[/size]
This is a good high current cell, but 30A continuous is too much for the internal fuse.
[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
Official specifications:
- Model: INR21700 4000mah 30A
- Size: 21.6*70.5mm
- Nominal voltage: 3.60V
- End-of-charge voltage: 4.20V
- End-of-discharge Voltage: 2.5V
- Typical Capacity: 4000mAh (0.2C discharge)
- Min capacity: 3900mAh (0.2C discharge)
- Weight: Max:75g
- Internal resistance: Max:10mOhm AC 1kHz
- Standard Charge: 1500mA,CCCV 100mA cut-off
- Quick Charge Current: 3000mA
- Max Continuous Discharge Current: 30000mA
This is a high current 21700 cell with good capacity.
The two cells match nicely, but do not like a continuous 30A discharge (I only tried that on the first cell). The capacity donot change much with load.
[size=+3]Conclusion[/size]
This is a good high current cell, but 30A continuous is too much for the internal fuse.
[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