Test/review of Keeppower 21700 5000mAh P2150K (Black) 2019

HKJ

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[size=+3]Keeppower 21700 5000mAh P2150K (Black) 2019[/size]

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Official specifications:
  • Capacity typ.: 4900mAh
  • Capacity min.: 4750mAh
  • Nominal voltage: 3.70V
  • Charge voltage: 4.20+/-0.05V
  • Standard discharge cut-off voltage: 2.50V
  • Standard charge current: 2450mA
  • Charge termination current: 100mA
  • Max. continuous discharge current: 10A

Keeppower%2021700%205000mAh%20P2150K%20(Black)%202019-info.png


This is a high capacity 21700 cell with added protection circuit.

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Keeppower%2021700%205000mAh%20P2150K%20(Black)%202019-Capacity.png


The discharge curves for the two cells matches very fine, the protection trips after some time with 10A load.

Keeppower%2021700%205000mAh%20P2150K%20(Black)%202019-Temp-7.0.png


Keeppower%2021700%205000mAh%20P2150K%20(Black)%202019-Temp-10.0.png


Keeppower%2021700%205000mAh%20P2150K%20(Black)%202019-CapacityTimeHours.png


Keeppower%2021700%205000mAh%20P2150K%20(Black)%202019-CapacityTime.png


Keeppower%2021700%205000mAh%20P2150K%20(Black)%202019-Energy.png


Keeppower%2021700%205000mAh%20P2150K%20(Black)%202019-PowerLoadTime.png


Keeppower%2021700%205000mAh%20P2150K%20(Black)%202019-TripCurrent.png


Keeppower%2021700%205000mAh%20P2150K%20(Black)%202019-Charge.png


Keeppower%2021700%205000mAh%20P2150K%20%28Black%29%202019-Pulse-1A-10-10-2.8V-IR.png



[size=+3]Conclusion[/size]

This is a very good quality cell with about maximum capacity for this size. The protection adds a few safeguards to the cell.



[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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