Test/Review of Efest IMR18350 700mAh (Purple) 2014

Efest IMR18350 700mAh (Purple) 2014

Official specifications:

  • Capacity: 700mAh
  • Min. Capacity: 670mAh
  • Nominal voltage: 3,7V
  • Charge voltage: 4,2V ± 0,05
  • Discharge voltage: 3,0V
  • Max. discharge current: 11A (15C)
  • Max. charge current: 0,7A (1C)
  • Positive pole: Flat Top
  • Protection circuit (BMS): no (unprotected)
  • Chemical composition: LiMn (IMR)
  • Diameter: 18,25mm ± 0,1
  • Height: 34,75mm ± 0,1
  • Weight: 22g ± 1
  • Charging methode: CC-CV

Efest has made a range of very high current batteries (Purple), this is the 18350 sized one.

The cells has very good tracking between them and does also handle the load very nicely.


This cell has very impressive high current capability, but do not get it if you want a lot of capacity.
It looks like a good cell.

Notes and links

The batteries was supplied by Akkuteile.de 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
Comparison to other LiIon batteries

impressive cell and thanks for another excellent review HKJ.

Oh wow…I missed this one!

Excellent review….those little purple Efests seem to hold their own!

Thanks again for such an in depth review

Wow, 10A current capabilities from an 18350 :open_mouth:

Thanks for the review HJK :beer:

10A…That is like a pocket mini grenade :smiley:
Thanks for the review HKJ!