Test/review of Keeppower 21700 5000mAh P5150TC (White-Blue) 2020

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HKJ
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Test/review of Keeppower 21700 5000mAh P5150TC (White-Blue) 2020

Keeppower 21700 5000mAh P5150TC (White-Blue) 2020
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Official specifications:


  • Voltage: 3.60V
  • Typical capacity: 5000mAh
  • Minimum Capacity: 4900mAh
  • Discharge cut-off voltage: 2.50V
  • Charge voltage: 4.20V +/- 0.05V
  • Standard charge current: 1300mA
  • Maximum constant discharge current: 8A
  • USB type-C charge socket.

Keeppower%2021700%205000mAh%20P5150TC%20(White-Blue)%202020-info
This is a 21700 cell with build-in USB-C charger, the cell is a protected high capacity cell.
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Keeppower%2021700%205000mAh%20P5150TC%20(White-Blue)%202020-Capacity
The two cells match just about perfect and can easily deliver the rated 8A.
Keeppower%2021700%205000mAh%20P5150TC%20(White-Blue)%202020-Temp-7.0
Keeppower%2021700%205000mAh%20P5150TC%20(White-Blue)%202020-Temp-10.0
Keeppower%2021700%205000mAh%20P5150TC%20(White-Blue)%202020-CapacityTimeHours
Keeppower%2021700%205000mAh%20P5150TC%20(White-Blue)%202020-CapacityTime
Keeppower%2021700%205000mAh%20P5150TC%20(White-Blue)%202020-Energy
Keeppower%2021700%205000mAh%20P5150TC%20(White-Blue)%202020-PowerLoadTime
Keeppower%2021700%205000mAh%20P5150TC%20(White-Blue)%202020-TripCurrent
Keeppower%2021700%205000mAh%20P5150TC%20(White-Blue)%202020-Charge
USB%20Charge%20Test%2020210703001627
The USB charging uses a switching regulator to keep the heat down, I measured about 10°C temperature increase at the front of the cell during charge.
The USB-C input do not follow any protocols, except signalling it needs power.
Discharge-Keeppower%2021700%205000mAh%20P5150TC%20%28White-Blue%29%202020-pulse-1.0%2010%2010-IR
Conclusion
It is a good battery and the USB charging means it can share charger with a mobile phone, this is very practical when traveling or when having only a few LiIon batteries. Only caveat is that the battery is considerable longer than a standard 21700 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/

pirate joe 22
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So the protection circuit trips if the battery puts out 15 amps , is that correct ?

HKJ
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pirate joe 22 wrote:
So the protection circuit trips if the battery puts out 15 amps , is that correct ?

Around 15A, it will trip at a slightly lower current if it is applied for some time.

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