Test/Review of Keeppower 14500 840mAh (Black) 2014

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HKJ
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Test/Review of Keeppower 14500 840mAh (Black) 2014
Keeppower 14500 840mAh (Black) 2014


DSC_4868
Official specifications:
  • 14500 840mAh Protected Rechargeable Battery
  • Min Capacity: 750mAh
  • Typical Capacity: 840mAh
  • Normal Voltage: 3.7V
  • High Discharge Rate (Max 2C)
  • Protection Circuit (Against overcharge, over discharge, over current and short-circuit.)
  • 4.2 volts max voltage and 3.6-3.7 volts nominal voltage.
  • Over 500 charge-discharge cycles
  • Size: L:52.50mm*D:14.25mm
  • Cell: Sanyo UR14500P

Keeppower%2014500%20840mAh%20(Black)%202014-info

Keeppower has two 14500 batteries in their program, this is the one from Sanyo (The other cell is from DLG and is marked 800mAh).

DSC_4867

DSC_4869 DSC_4870

DSC_4871
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Keeppower%2014500%20840mAh%20(Black)%202014-Capacity

The battery is fairly constant in capacity up to nearly 2A.

Keeppower%2014500%20840mAh%20(Black)%202014-CapacityTimeHours

Keeppower%2014500%20840mAh%20(Black)%202014-CapacityTime

Keeppower%2014500%20840mAh%20(Black)%202014-Energy

Keeppower%2014500%20840mAh%20(Black)%202014-PowerLoadTime

Keeppower%2014500%20840mAh%20(Black)%202014-TripCurrent

This battery has higher protection trip current than last time I tested it.

Keeppower%2014500%20840mAh%20(Black)%202014-Charge



Conclusion

I have tested this battery once before (That time is was marked 800mAh) and got exactly the same discharge curves.
This is not very surprising with a Sanyo cell inside, this can only be a very good battery, even with the slightly high protection trip point.



Notes and links

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
Comparison to other LiIon batteries

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