Efest IMR18650 3000mAh (Purple) 2017

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Official specifications:

Efest%20IMR18650%203000mAh%20(Purple)%202017-info

A high capacity 18650 battery with fairly high current.

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Efest%20IMR18650%203000mAh%20(Purple)%202017-Capacity

The two cells tracks nicely.

Efest%20IMR18650%203000mAh%20(Purple)%202017-Temp-15.0

They get rather hot at 15A

Efest%20IMR18650%203000mAh%20(Purple)%202017-Temp-20.0

And even more so at 20A, where I have to stop the discharge due to temperature.

Efest%20IMR18650%203000mAh%20(Purple)%202017-Temp-30.0

Efest%20IMR18650%203000mAh%20(Purple)%202017-CapacityTimeHours

Efest%20IMR18650%203000mAh%20(Purple)%202017-CapacityTime

Efest%20IMR18650%203000mAh%20(Purple)%202017-Energy

Efest%20IMR18650%203000mAh%20(Purple)%202017-PowerLoadTime

Efest%20IMR18650%203000mAh%20(Purple)%202017-TripCurrent

Efest%20IMR18650%203000mAh%20(Purple)%202017-Charge



Conclusion

This cell looks like a very good cell and it can deliver about 15A continious.



Notes and links

The batteries was supplied by Efest for a 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