Test/review of Efest IMR18500 1000mAh (Purple) 2017

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HKJ
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Test/review of Efest IMR18500 1000mAh (Purple) 2017

Efest IMR18500 1000mAh (Purple) 2017
DSC_0268
Official specifications:


  • Capacity: 1000mAh
  • Voltage: 3.7V
  • Continuous discharge current: 10A
  • Pulse discharge current: 15A
  • Diameter: 18.50 (+/-0.2)mm
  • Length: 50.20 (+/-0.2)mm

Efest%20IMR18500%201000mAh%20(Purple)%202017-info
A high current 18500 cell.
DSC_0267
DSC_0269 DSC_0270
DSC_0271
DSC_0272
DSC_0273
Efest%20IMR18500%201000mAh%20(Purple)%202017-Capacity
This is very nice discharge curves with good tracking and the cell can deliver 15A.
Efest%20IMR18500%201000mAh%20(Purple)%202017-Temp-7.0
Efest%20IMR18500%201000mAh%20(Purple)%202017-Temp-10.0
Efest%20IMR18500%201000mAh%20(Purple)%202017-Temp-15.0
Efest%20IMR18500%201000mAh%20(Purple)%202017-CapacityTimeHours
Efest%20IMR18500%201000mAh%20(Purple)%202017-CapacityTime
Efest%20IMR18500%201000mAh%20(Purple)%202017-Energy
Efest%20IMR18500%201000mAh%20(Purple)%202017-PowerLoadTime
Efest%20IMR18500%201000mAh%20(Purple)%202017-TripCurrent
Efest%20IMR18500%201000mAh%20(Purple)%202017-Charge
I did mostly run the cell empty during this test, it can deliver a lot of current, but not for long.
Conclusion
Good high current performance, capacity as expected in a high current cell.
This is a good cell.
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
Compare to 18650 and other batteries

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

Edited by: HKJ on 07/28/2017 - 14:01
Woody
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You have a typo under your first table, where you describe it as a “high current 18650 cell”.

HKJ
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Woody wrote:
You have a typo under your first table, where you describe it as a “high current 18650 cell”.

You are very cumbersome you know. Big Smile

It is fixed now.

And thank you for the notification, it might be cumbersome but I like getting feedback and correction of bugs/typos, for me it is a very important, I know that I often type too fast without checking what I write.

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

djozz
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Thanks for the test!

Using your comparator, this cell appears to perform almost identical to the 2014 lila version, not much happened since then Sad

Hopefully one of these days Aspire will develop a high current high capacity 18500.