Keeppower 18650 3600mAh (Black) 2015

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Official specifications:
Keeppower%2018650%203600mAh%20(Black)%202015-info

Top of the line high capacity 18650 cell, at the current time (10/2015) you cannot get any cell in this size with more capacity.

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Keeppower%2018650%203600mAh%20(Black)%202015-Capacity

The two cells tracks fairly well.
My result is below rated capacity, some of the reason is probably because I terminate charge a bit early (100mA instead of 50mA) and do not discharge to 2.5 volt, only to 2.8 volt.

Keeppower%2018650%203600mAh%20(Black)%202015-CapacityTimeHours

Keeppower%2018650%203600mAh%20(Black)%202015-CapacityTime

Keeppower%2018650%203600mAh%20(Black)%202015-Energy

Keeppower%2018650%203600mAh%20(Black)%202015-PowerLoadTime

Keeppower%2018650%203600mAh%20(Black)%202015-TripCurrent

Keeppower%2018650%203600mAh%20(Black)%202015-Charge



Conclusion

There is not much difference between 3400/3500/3600mAh cells and to use the full capacity you must discharge down to 2.5 volt. This means the advantage of using this cell over the other high capacity cells is fairly minimal.
I will rate this cell very good.

Notes and links

The batteries was supplied by Keeppower 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