Basen 18650 3400mAh BS186A (Black)
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Official specifications:
- Capacity: 3400mAh
- Voltage: 3.7V
- Style: Flat top
- Protected: No
- Charging current: Maximum 2A (1A current recommended)
- Weight: 48.5g±1g
- Size:Diameter: 18.28mm; Length:65.20mm
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This is the usual 3400mAh battery with a Basen label on and it works as expected.
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I am not very impressed with the QR code, due to the round cell my phone will not read it.
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The cells has good tracking and is above the rated Panasonic minimum capacity (3200mAh at 0.65A discharge) and I do not even test the full capacity, because I stop at 2.8 volt, not the rated 2.5 volt.
I do not now what the bumps in one of the 7A lines are.
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Conclusion
There is not really anything to say about this battery, except it is a very good battery.
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
Compare to 18650 and other batteries