Test/Review of Basen 18650 3400mAh BS186A (Black)

Basen 18650 3400mAh BS186A (Black)

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

This is the usual 3400mAh battery with a Basen label on and it works as expected.

I am not very impressed with the QR code, due to the round cell my phone will not read it.

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.


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