Efest IMR18650 2000mAh (Red) 2014

V1 flat top

DSC_4773

Official specifications:
Efest%20IMR18650%202000mAh%20V1%20(Red)%202014-info

Thse batteries are fairly low capacity and not really high current.

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DSC_4774 DSC_4775

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Efest%20IMR18650%202000mAh%20V1%20(Red)%202014-Capacity

The batteries do track and can deliver 7A, this is not very impressive for 18650 IMR cells today.

Efest%20IMR18650%202000mAh%20V1%20(Red)%202014-CapacityTimeHours

Efest%20IMR18650%202000mAh%20V1%20(Red)%202014-CapacityTime

Efest%20IMR18650%202000mAh%20V1%20(Red)%202014-Energy

Efest%20IMR18650%202000mAh%20V1%20(Red)%202014-PowerLoadTime

Efest%20IMR18650%202000mAh%20V1%20(Red)%202014-TripCurrent

Efest%20IMR18650%202000mAh%20V1%20(Red)%202014-Charge




V2 button top

DSC_4778

Official specifications:

Efest%20IMR18650%202000mAh%20V2%20(Red)%202014-info

The flat top batteries are basically the same.

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Efest%20IMR18650%202000mAh%20V2%20(Red)%202014-Capacity

Efest%20IMR18650%202000mAh%20V2%20(Red)%202014-CapacityTimeHours

Efest%20IMR18650%202000mAh%20V2%20(Red)%202014-CapacityTime

Efest%20IMR18650%202000mAh%20V2%20(Red)%202014-Energy

Efest%20IMR18650%202000mAh%20V2%20(Red)%202014-PowerLoadTime

Efest%20IMR18650%202000mAh%20V2%20(Red)%202014-TripCurrent

Efest%20IMR18650%202000mAh%20V2%20(Red)%202014-Charge



Conclusion

As IMR batteries they are not very impressive.
At 7A and below they do have an acceptable performance.



Notes and links

The batteries was supplied by Efest 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