Test/review of Vapcell INR21700 4000mAh (Gold) 2019

HKJ

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[size=+3]Vapcell INR21700 4000mAh (Gold) 2019[/size]

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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

Vapcell%20INR21700%204000mAh%20(Gold)%202019-info.png


This is a high current 21700 cell with good capacity.

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Vapcell%20INR21700%204000mAh%20(Gold)%202019-Capacity.png


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.

Vapcell%20INR21700%204000mAh%20(Gold)%202019-Temp-15.0.png


Vapcell%20INR21700%204000mAh%20(Gold)%202019-Temp-20.0.png


Vapcell%20INR21700%204000mAh%20(Gold)%202019-CapacityTimeHours.png


Vapcell%20INR21700%204000mAh%20(Gold)%202019-CapacityTime.png


Vapcell%20INR21700%204000mAh%20(Gold)%202019-Energy.png


Vapcell%20INR21700%204000mAh%20(Gold)%202019-PowerLoadTime.png


Vapcell%20INR21700%204000mAh%20(Gold)%202019-TripCurrent.png


Vapcell%20INR21700%204000mAh%20(Gold)%202019-Charge.png


Discharge-Vapcell-inr21700-4000mah-gold-pulse-1.0%2010%2010-IR.png



[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
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Table with all tested LiIon batteries
 
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