Test/Review of Basen 18650 2100mAh BS186E (Black)

Basen 18650 2100mAh BS186E (Black)

Official specifications:

  • Type: BS186E (High Drain)
  • Capacity: 2100mAh
  • Voltage: 3.7V
  • Style: Flat top
  • Protected: No
  • Max.discharge current: 30A
  • Weight: 48±1g
  • Size: Diameter:18.17mm; Length:64.98mm

This is a 18650 with a very high current rating.

The cells has good tracking and nearly constant capacity with any load. The Sony datasheet do rate this cell for 30A continuous discharge, but I would prefer to stay below 20A.


This is a very good cell with a lot of power.

Notes and links

The batteries was supplied by Basen for a 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
Compare to 18650 and other batteries

From a capacity standpoint it looks like it is a lot happier at 20 Amps and below. The discharge energy chart says it is happier at 10 amps it looks like. Then the steps widen. Of course they are bigger steps too.