Keeppower 14500 840mAh (Black) 2014
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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
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Keeppower has two 14500 batteries in their program, this is the one from Sanyo (The other cell is from DLG and is marked 800mAh).
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The battery is fairly constant in capacity up to nearly 2A.
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This battery has higher protection trip current than last time I tested it.
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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