Test / Review: Efest IMR26650 3000mAh (Blue)

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HKJ
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Test / Review: Efest IMR26650 3000mAh (Blue)

Efest IMR26650 3000mAh (Blue)

DSC_1561

Official specifications:

  • Nominal Voltage: 3.7v
  • Battery Model: 26650 Capacity: 3000mAh
  • Positive: Flat top
  • Cycle Life: 500 Cycles
  • Max Charging Rate: 4.5amps


Efest%20IMR26650%203000mAh%20(Blue)-info

This is a IMR cell with low internal resistance.

DSC_1555

DSC_1562 DSC_1563
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DSC_1565

Efest%20IMR26650%203000mAh%20(Blue)-Capacity

The cells does very good up to 10A, but 15A is to much.

Efest%20IMR26650%203000mAh%20(Blue)-CapacityTimeHours

Efest%20IMR26650%203000mAh%20(Blue)-CapacityTime

Efest%20IMR26650%203000mAh%20(Blue)-Energy

Efest%20IMR26650%203000mAh%20(Blue)-PowerLoadTime

Efest%20IMR26650%203000mAh%20(Blue)-TripCurrent

Efest%20IMR26650%203000mAh%20(Blue)-Charge



Conclusion

The cells has only about 2500mAh capacity, this is low for a 26650, you can get 18650 with more capacity, this does not make this a bad battery, but a battery designed for a special purpose.
If you need as much voltage as possible and a lot of current, this is the battery, especially between 5A and 10A.
At the current time I can only rate them acceptable, because Efest is a new company, and the batteries is not from one of the big brands.



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

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Edited by: sb56637 on 08/26/2014 - 17:45
MRsDNF
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Thanks HKJ. Maybe the capacity on these batteries should be changed to closer what really are?

 

djozz quotes, "it came with chinese lettering that is chinese to me".

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nickelflipper
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I ‘ve been wondering how these cells would perform. Thanks for the review, always informative. Looks like they would hold 10A, at least for a little while.

Kent

sb56637
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Thanks very much for the review! Frontpage’d and Sticky’d.

Budget Light Forum ...where Frugal meets with Flashlight!

That Ninja Guy
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Thanks for the thorough review HKJ as usual. I can’t see me needing this type of cell in any current situation, but you never know. Smile