Windyfire 18650 2000mAh (Green)

DSC_5924

Official specifications:
Windyfire%2018650%202000mAh%20(Green)-info

A fairly low capacity cell without any high current ability.

DSC_5910

DSC_5912 DSC_5913

DSC_5915
DSC_5925

Windyfire%2018650%202000mAh%20(Green)-Capacity

The cell does very good up to 7A, the curves are tracking nicely and with nearly constant capacity. This is a very good result for a 4A rated cell.

Windyfire%2018650%202000mAh%20(Green)-CapacityTimeHours

Windyfire%2018650%202000mAh%20(Green)-CapacityTime

Windyfire%2018650%202000mAh%20(Green)-Energy

Windyfire%2018650%202000mAh%20(Green)-PowerLoadTime

Windyfire%2018650%202000mAh%20(Green)-TripCurrent

Windyfire%2018650%202000mAh%20(Green)-Charge



Conclusion

The cell looks to be of good quality, but the capacity is fairly low for todays batteries. If the price is low, this cell will be interesting.
This cell gets an acceptable rating.



Notes and links

The batteries was supplied by Windyfire for 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