Efest 18650 2200mAh (Black) 2014

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Official specifications:
Efest%2018650%202200mAh%20(Black)%202014-info

This is a normal (i.e. not high current) 18650 cell. I believe the 22000mA in the specifications is a typo.

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Efest%2018650%202200mAh%20(Black)%202014-Capacity

There is good tracking between the two cells at lower current and the capacity is fairly constant up to 7A.

Efest%2018650%202200mAh%20(Black)%202014-CapacityTimeHours

Efest%2018650%202200mAh%20(Black)%202014-CapacityTime

Efest%2018650%202200mAh%20(Black)%202014-Energy

Efest%2018650%202200mAh%20(Black)%202014-PowerLoadTime

Efest%2018650%202200mAh%20(Black)%202014-TripCurrent

Efest%2018650%202200mAh%20(Black)%202014-Charge



Conclusion

Up to a few amperes the battery looks good, but both capacity and current capability is rather low by todays standards.



Notes and links

The batteries was supplied by Efest 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