Keeppower IMR18650 3500mAh (Black) 2015

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Official specifications:
Keeppower%20IMR18650%203500mAh%20(Black)%202015-info

This is a high current, high capacity and unprotected cell (Keeppower also has a protected 3500mA cell)

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Keeppower%20IMR18650%203500mAh%20(Black)%202015-Capacity

There is perfect tracking between the two cells.
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%20IMR18650%203500mAh%20(Black)%202015-CapacityTimeHours

Keeppower%20IMR18650%203500mAh%20(Black)%202015-CapacityTime

Keeppower%20IMR18650%203500mAh%20(Black)%202015-Energy

Keeppower%20IMR18650%203500mAh%20(Black)%202015-PowerLoadTime

Keeppower%20IMR18650%203500mAh%20(Black)%202015-TripCurrent

Keeppower%20IMR18650%203500mAh%20(Black)%202015-Charge



Conclusion

This cell is designed for higher loads, but it has capacity enough to be a resonable cell at lower loads also.

This is a very good cell.



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