Keeppower IMR26650 3500mAh (Black) 2014

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Official specifications:

Keeppower%20IMR26650%203500mAh%20(Black)%202014-info

This battery is rated as a high current type.

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Keeppower%20IMR26650%203500mAh%20(Black)%202014-Capacity

The two batteries has different capacity and being unprotected this makes them very bad for usage in series.
The batteries can handle up to 20A, but does heat up.

Keeppower%20IMR26650%203500mAh%20(Black)%202014-CapacityTimeHours

Keeppower%20IMR26650%203500mAh%20(Black)%202014-CapacityTime

Keeppower%20IMR26650%203500mAh%20(Black)%202014-Energy

Keeppower%20IMR26650%203500mAh%20(Black)%202014-PowerLoadTime

Keeppower%20IMR26650%203500mAh%20(Black)%202014-TripCurrent

Keeppower%20IMR26650%203500mAh%20(Black)%202014-Charge



Conclusion

These batteries are acceptable for single cell use, but due to the difference in capacity not for usage in series.
The high current performance is acceptable, but it is possible to find 26650 with lower capacity, but considerable better high current capability.



Notes and links

The battery 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