Test/review of Keeppower 20700 4250mAh P2070J (Black) 2019

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Test/review of Keeppower 20700 4250mAh P2070J (Black) 2019

Keeppower 20700 4250mAh P2070J (Black) 2019
DSC_6841
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: 10A

Keeppower%2020700%204250mAh%20P2070J%20(Black)%202019-info
This is a protected 20700 cell with fairly good capacity
DSC_6839 DSC_6840
DSC_6842 DSC_6843
DSC_6844
DSC_6845
Keeppower%2020700%204250mAh%20P2070J%20(Black)%202019-Capacity
The two cells matches very fine and capacity drops slowly with higher current. The protection trips after some time at 10A.
Keeppower%2020700%204250mAh%20P2070J%20(Black)%202019-Temp-7.0
Keeppower%2020700%204250mAh%20P2070J%20(Black)%202019-Temp-10.0
Keeppower%2020700%204250mAh%20P2070J%20(Black)%202019-CapacityTimeHours
Keeppower%2020700%204250mAh%20P2070J%20(Black)%202019-CapacityTime
Keeppower%2020700%204250mAh%20P2070J%20(Black)%202019-Energy
Keeppower%2020700%204250mAh%20P2070J%20(Black)%202019-PowerLoadTime
Keeppower%2020700%204250mAh%20P2070J%20(Black)%202019-TripCurrent
Keeppower%2020700%204250mAh%20P2070J%20(Black)%202019-Charge
Keeppower%2020700%204250mAh%20P2070J%20%28Black%29%202019-Pulse-1.0A-10-10-2.5V-IR
Conclusion
This is a good protected cell.
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/