Keeppower IMR18650 NH1831 3120mAh (Black) 2016

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Official specifications:
Keeppower%20IMR18650%20NH1831%203120mAh%20(Black)%202016-info

A high current and high capacity cell from Keeppower.

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Keeppower%20IMR18650%20NH1831%203120mAh%20(Black)%202016-Capacity

There is no doubt this is a quality battery, the curves track perfectly and capacity is nearly constant with current.
At high current the battery gets hot and I stopped the 30A test due to that.

Keeppower%20IMR18650%20NH1831%203120mAh%20(Black)%202016-Temp-15.0

Keeppower%20IMR18650%20NH1831%203120mAh%20(Black)%202016-Temp-20.0

At 20A the cell gets rather hot, but it stayed just below 80C

Keeppower%20IMR18650%20NH1831%203120mAh%20(Black)%202016-Temp-30.0

At 30A discharge the temperature reached 86C, but first after I stopped at 80C.

Keeppower%20IMR18650%20NH1831%203120mAh%20(Black)%202016-CapacityTimeHours

Keeppower%20IMR18650%20NH1831%203120mAh%20(Black)%202016-CapacityTime

Keeppower%20IMR18650%20NH1831%203120mAh%20(Black)%202016-Energy

Keeppower%20IMR18650%20NH1831%203120mAh%20(Black)%202016-PowerLoadTime

Keeppower%20IMR18650%20NH1831%203120mAh%20(Black)%202016-TripCurrent

Keeppower%20IMR18650%20NH1831%203120mAh%20(Black)%202016-Charge



Conclusion

This is a very good high current battery, but 30A will need a temperature cutout to stay safe.



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