Test / Review: Sibeile IMR18650 3100mAh (Black)

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HKJ
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Test / Review: Sibeile IMR18650 3100mAh (Black)

Sibeile IMR18650 3100mAh (Black)

DSC_3093

Official specifications:

  • Nominal Capacity: 3100mAh(0.2C, 2.50V discharge)
  • Minimum Capacity: 3050mAh (0.2C, 2.50V discharge)
  • Charging Voltage: 4.2±0.05V
  • Nominal Voltage: 3.7V
  • Charging Method: CC-CV (constant voltage with limited current)
  • Charging Current: Standard charge: 1700mAh, Rapid charge: 3100mAh
  • Charging Time: Standard charge: 3 hours, Rapid charge: 2.5 hours
  • Discharge Cut-off Voltage: 2.50V
  • Cell Weight: 48g max.
  • Cell Dimension: Height: 65.00mm max. Diameter: 18.25mm max.
  • Operating Temperature: Charge: 0 to 45 °C Discharge:-20 to 60°C


Sibiele%20IMR18650%203100mAh%20(Black)-info

The cell used can be discharged down to 2.5 volt, in my test I only discharges to 2.8 volt, i.e. I do not measure the full capacity. But then, not all lights will be able to use the full capacity.

DSC_3044 battery%20pack-1

After shipping the samples to me, some print was added to the box.

DSC_3094 DSC_3095
DSC_3096
DSC_3097

The batteries are marked "IMR Li-Mn", but I doubt it, the perform is exactly like the Panasonic 3100mAh batteries and they are not IMR cells.

Sibiele%20IMR18650%203100mAh%20(Black)-Capacity

These discharge curves are very good.

Sibiele%20IMR18650%203100mAh%20(Black)-CapacityTimeHours

Sibiele%20IMR18650%203100mAh%20(Black)-CapacityTime

Sibiele%20IMR18650%203100mAh%20(Black)-Energy

Sibiele%20IMR18650%203100mAh%20(Black)-PowerLoadTime

Sibiele%20IMR18650%203100mAh%20(Black)-TripCurrent

Sibiele%20IMR18650%203100mAh%20(Black)-Charge



Conclusion

The batteries looks like they are based on a very good Panasonic cell, but I do not like they are marked IMR.



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
RaceR86
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Thanks for another great review HKJ.. Your reviews are excellent, and a great source for the community!

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Jayc
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My mouth dropped opened for a bit after seeing an IMR that has 3100mAh.
Thanks for setting the truth straight.

PyTech
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been waiting for this one. could these just be rewrapped panasonics?

-Sean

BIGWOOD
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Too bad about the non-IMR thing.  Even thought we all knew it was a long shot, i for one had my fingers crossed.  Oh well.  If there was a 3100 mAh IMR battery available, I'm sure we'd be all over it!

@HKJ - as usual thanks for the review

Milan
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Oh, those Chinese…
If not lying about capacity, lying about IMR.
What’s the point of re-wrapping Panasonics?

I guess I know:
So they can switch to laptop pulls or Chinese cells after reviews has been done…

Hikelite
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I would say the mis-specifications are deliberate. They have those Panasonic contacts, they have the 2.5V cut-off voltage like the NCR series from Panasonic. The Min capacity is not as Panasonic says 2950mAh but 3050mAh, and it's specified at 0.2C which for a true IMR would be quite not much of a feature. I am going to stop here because I would only help them do better IMR specs on any of the Panasonic cells.

Nightbird95
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Milan wrote:
Oh, those Chinese…
If not lying about capacity, lying about IMR.
What’s the point of re-wrapping Panasonics?

I guess I know:
So they can switch to laptop pulls or Chinese cells after reviews has been done…

Yeah, I hope they stop doing it. These results are good but we have no assurance that we’ll be getting the same batteries as the ones sent to HKJ. Sad

sb56637
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Thanks a lot for the review! Frontpage’d and Sticky’d.

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