Test/review of Keeppower 20700 4250mAh P2042R (Black) 2019

HKJ

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[size=+3]Keeppower 20700 4250mAh P2042R (Black) 2019[/size]

DSC_6816.jpg


Official specifications:
  • Capacity min.: 4250mAh
  • Capacity typ.: 4050mAh
  • Nominal voltage: 3.70V
  • Charge voltage: 4.20+/-0.05V
  • Standard discharge cut-off voltage: 2.50V
  • Standard charge current: 2000mA
  • Charge termination current: 80mA
  • Max. continuous discharge current: 15A

Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-info.png


This is a protected 20700 cell with moderate capacity.

DSC_6814.jpg


DSC_6817.jpg
DSC_6818.jpg


DSC_6819.jpg

DSC_6820.jpg


Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-Capacity.png


The discharge curves for the two cells tracks nicely and the protection kicks in between 10A and 15A.

Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-Temp-7.0.png


Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-Temp-10.0.png


Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-CapacityTimeHours.png


Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-CapacityTime.png


Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-Energy.png


Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-PowerLoadTime.png


Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-TripCurrent.png


Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-Charge.png


Keeppower%2020700%204250mAh%20P2042R%20%28Black%29%202019-Pulse-1A-10-10-2.5V-IR.png




[size=+3]Conclusion[/size]

The cell is a good protected cell, but watch out for the length.



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

The batteries was supplied by Keeppower 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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