Test / Review: Efest 18650 2250mAh (Black)

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HKJ
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Test / Review: Efest 18650 2250mAh (Black)

Efest 18650 2250mAh (Black)
Button top

DSC_0837

Official specifications:

  • Efest IMR 18650
  • Brand: Efest Model: CGR-N
  • High Drain battery
  • Capacity:2250mah Material: Li-Mn
  • Positive Pole: Button top
  • Size:18.41(W)*66.88(L)mm


Efest%2018650%202250mAh%20bt%20(Black)-info

This is the button top version, this means that a button has been added to the top of the cell, making it slightly longer.

DSC_0790

DSC_0838 DSC_0839

DSC_0840
DSC_0841
DSC_0842

Efest%2018650%202250mAh%20bt%20(Black)-Capacity

Efest%2018650%202250mAh%20bt%20(Black)-CapacityTimeHours

Efest%2018650%202250mAh%20bt%20(Black)-CapacityTime

Efest%2018650%202250mAh%20bt%20(Black)-Energy

Efest%2018650%202250mAh%20bt%20(Black)-PowerLoadTime

Efest%2018650%202250mAh%20bt%20(Black)-TripCurrent

Efest%2018650%202250mAh%20bt%20(Black)-Charge



Flat top

DSC_0831

Official specifications:

  • Efest IMR 18650
  • Brand: Efest Mode
  • High Drain battery
  • Capacity:2250mah Material: Li-Mn
  • Positive Pole: Flat top
  • Size:18,23(W)*65,12(L)mm


Efest%2018650%202250mAh%20ft%20(Black)-info

The flat top version of the battery matches the 18x65 mm specification.

DSC_0790

DSC_0832 DSC_0833

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DSC_0836

Efest%2018650%202250mAh%20ft%20(Black)-Capacity

Efest%2018650%202250mAh%20ft%20(Black)-CapacityTimeHours

Efest%2018650%202250mAh%20ft%20(Black)-CapacityTime

Efest%2018650%202250mAh%20ft%20(Black)-Energy

Efest%2018650%202250mAh%20ft%20(Black)-PowerLoadTime

Efest%2018650%202250mAh%20ft%20(Black)-TripCurrent

Efest%2018650%202250mAh%20ft%20(Black)-Charge



Conclusion

Efest does not specify the actual cell used, but the capacity specifications and discharger curves matches the a Panasonic cell, making this a very good battery.



Notes and links

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
kreisler
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Thanks for the review!! Smile

*FMI* i got 4 i/o sh
NightCrawl
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Yes, Efest is really coming. Thanks for the review. Smile

HKJ
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NightCrawl wrote:
Yes, Efest is really coming.

They got a huge selection of batteries:

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

MattSPL
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Thanks for the review Smile

NightCrawl
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HKJ wrote:

NightCrawl wrote:
Yes, Efest is really coming.

They got a huge selection of batteries:

*drool*

You got two of each to test? I just saw the Efest IMR in your comparator but the article isnt up yet. I guess thats the next?

Btw, your pictures are a little large here. Could you post them with size set to 100%? That way they will adapt to screen size.

Gurthang
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Checked EFest on AliBaba site and linked to EFest home site. Great battery line-up just wish they’d eliminate all the duplicate listings. BTW I saw some “AW” branded cells listed, which surprised me.

HKJ
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Gurthang wrote:
BTW I saw some "AW" branded cells listed, which surprised me.

According to AW they are fake.

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

HKJ
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NightCrawl wrote:
You got two of each to test?

Exactly.

NightCrawl wrote:
I just saw the Efest IMR in your comparator but the article isnt up yet. I guess thats the next?

I have not decided what is next yet, I have a couple of finished tests, both Efest and other.

 

NightCrawl wrote:
Btw, your pictures are a little large here. Could you post them with size set to 100%? That way they will adapt to screen size.

I do not write a special review for BLF, but simply copies the html I uses on my website. I.e. I cannot do special adjustments.

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

sb56637
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Thanks very much! Frontpage’d and Sticky’d.

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