Test / Review: Efest IMR18500 V1 1100mAh (Red)

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HKJ
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Test / Review: Efest IMR18500 V1 1100mAh (Red)

Efest IMR18500 V1 1100mAh (Red)

DSC_0585

Official specifications:

  • Brand /model: IMR 18500-1100mAh 3.7V
  • spec: Lithium 18500-1100mAh 3.7V
  • Material: IMR
  • Size(mm); 50(L)*18(D)
  • Weight(g): 45g


Efest%20IMR18500%20V1%201100mAh%20(Red)-info

This battery is a IMR 18500, i.e. it is shorter than the usual 18650 batteries! It does also have less capacity.

DSC_0513 DSC_0584

DSC_0586 DSC_0587

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Efest%20IMR18500%20V1%201100mAh%20(Red)-Capacity

The batteries does track nicely and has nearly the same capacity at any load.

Efest%20IMR18500%20V1%201100mAh%20(Red)-CapacityTimeHours

Efest%20IMR18500%20V1%201100mAh%20(Red)-CapacityTime

Efest%20IMR18500%20V1%201100mAh%20(Red)-Energy

Efest%20IMR18500%20V1%201100mAh%20(Red)-PowerLoadTime

Efest%20IMR18500%20V1%201100mAh%20(Red)-TripCurrent

The low capacity can be seen here, the battery is nearly empty before I am finished with the test.

Efest%20IMR18500%20V1%201100mAh%20(Red)-Charge



Conclusion

These IMR batteries have very good performance at any load, but the capacity is, of course, not that high (For just 15mm more length, it is possible to get double capacity).
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

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 HK.

 

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Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

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

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MichelCleark
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We generally look for a high quality of batteries rather than capacity of batteries. I need a good performance of battery and hence I am using this batteries in my new kitchen cabinets in decorative items and other lights.

NightCrawl
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Welcome. Smile

Do you have some pictures of your build please?

 

I asked our admin to check his ip..