Test/Review of Imren IMR18650 3500mAh (Green)

HKJ

Flashaholic
Joined
Mar 26, 2008
Messages
9,715
Location
Copenhagen, Denmark
[size=+3]Imren IMR18650 3500mAh (Green)[/size]

30A%203500mah%20(6).jpg


Official specifications:
  • Brand: IMREN
  • Weight: 50g
  • Capacity: 3500mAh
  • Length : 65.22mm
  • Diameter: 18.19mm
  • Voltage: 3.7V
  • Excellent high-current discharge performance
  • Model: 18650
  • Material: Li-Mn
  • Discharge rate: 30A

Imren%20IMR18650%203500mAh%20(Green)-info.png


A high capacity and very high current cell from Imren.

DSC_1983.jpg



30A%203500mah%20(1).jpg
30A%203500mah%20(2).jpg


30A%203500mah%20(3).jpg

30A%203500mah%20(4).jpg

30A%203500mah%20(5).jpg



Imren%20IMR18650%203500mAh%20(Green)-Capacity.png


The two cells are fairly close at low loads, at higher current they do not match as well.
During the 20A discharge the cells stops (Probably vents) and the output voltage is 0, no more testing was possible. The good thing is that the safety in the cell works, the bad is that these cell can never deliver 30A.

Imren%20IMR18650%203500mAh%20(Green)-CapacityTimeHours.png


Imren%20IMR18650%203500mAh%20(Green)-CapacityTime.png


Imren%20IMR18650%203500mAh%20(Green)-Energy.png


Due to the failed cells I could not make these charts.

Imren%20IMR18650%203500mAh%20(Green)-Charge.png




[size=+3]Conclusion[/size]

The cells looks fine as high capacity cells, but they do not really handle high current.



[size=+3]Notes and links[/size]

The battery was supplied by Imren for a review.
Because Imren changed the wrapper after they shipped the batteries to me, the above pictures are taken by Imren.

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
 

SubLGT

Flashlight Enthusiast
Joined
Nov 18, 2013
Messages
1,183
Location
Idaho, USA
Your test results confirm some informed speculations from another battery reviewer/tester:

"...There are at least two versions of the green Imren 30A 3500mAh battery. In my opinion, one is a 10A 3300mAh Panasonic NCR18650GA and the other is a 10A 3500mAh LG MJ1. Each Imren's appearance is identical to its match and the Imrens' performances are about equal or worse than their match. The voltages of both Imren versions completely collapsed when discharged at their 30A rating. ...In my opinion it's best to treat this as a 10A battery…"

https://www.e-cigarette-forum.com/forum/threads/the-green-30a-3500mah-imren-is-a-10a-battery.723720/
 

ChrisGarrett

Flashlight Enthusiast
Joined
Feb 2, 2012
Messages
5,725
Location
Miami, Florida
Your test results confirm some informed speculations from another battery reviewer/tester:

"...There are at least two versions of the green Imren 30A 3500mAh battery. In my opinion, one is a 10A 3300mAh Panasonic NCR18650GA and the other is a 10A 3500mAh LG MJ1. Each Imren's appearance is identical to its match and the Imrens' performances are about equal or worse than their match. The voltages of both Imren versions completely collapsed when discharged at their 30A rating. ...In my opinion it's best to treat this as a 10A battery…"

https://www.e-cigarette-forum.com/forum/threads/the-green-30a-3500mah-imren-is-a-10a-battery.723720/

Note to self: stay away from Imren.

Chris
 

Thetasigma

Flashlight Enthusiast
Joined
Nov 10, 2015
Messages
1,197
Location
Michigan, USA
Decent performance but suspect manufacturer ratings would lead me to pass them up for more honest providers.

Good review as always.
 
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