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

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

Keeppower 20700 4250mAh P2042R (Black) 2019
DSC_6816
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
This is a protected 20700 cell with moderate capacity.
DSC_6814
DSC_6817 DSC_6818
DSC_6819
DSC_6820
Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-Capacity
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
Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-Temp-10.0
Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-CapacityTimeHours
Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-CapacityTime
Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-Energy
Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-PowerLoadTime
Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-TripCurrent
Keeppower%2020700%204250mAh%20P2042R%20(Black)%202019-Charge
Keeppower%2020700%204250mAh%20P2042R%20%28Black%29%202019-Pulse-1A-10-10-2.5V-IR
Conclusion
The cell is a good protected cell, but watch out for the length.
Notes and links
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

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Superstocker
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Thanks HKJ! We appreciate all your hard work.