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Thread: Test/review of Samsung INR18650-25R 2500mAh (Green) Ebay

  1. #1
    *Flashaholic* HKJ's Avatar
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    Default Test/review of Samsung INR18650-25R 2500mAh (Green) Ebay

    Samsung INR18650-25R 2500mAh (Green) Ebay



    Official specifications:
    • Type: Lithium-ion
    • Composition: LiMn Hybrid (IMR)
    • Rechargeable: Yes
    • Positive terminal style: Flat top
    • Protection: Unprotected
    • Capacity: 2500mAh
    • Max continuous discharge: 20A
    • Nominal voltage: 3.7V




    Batteries marked Samsung from ebay.










    The two cells matches fairy well, i.e. it is probably new cells, but they cannot deliver more than about 10A and they are strained to do that.























    Conclusion

    This is definitely not a Samsung INR18650-25R battery, it is some, probably old, low capacity cell and not designed for high current.

    The cell works and would have been a acceptable cell about 10 years ago.



    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
    Graphical comparison to 18650 and other batteries
    Table with all tested LiIon batteries
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  2. #2

    Default Re: Test/review of Samsung INR18650-25R 2500mAh (Green) Ebay

    Why not mark these as counterfeit right in the title? Should not IMO use the Samsung 25R label without prominently stating "supposed" or "fake" right there

    Most people searching / scanning this info would miss that these are a scam.

  3. #3
    Flashaholic
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    Default Re: Test/review of Samsung INR18650-25R 2500mAh (Green) Ebay

    I have to agree. These should be clearly marked as fake/counterfeit.

  4. #4
    Flashaholic*
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    Default Re: Test/review of Samsung INR18650-25R 2500mAh (Green) Ebay

    He did say it was counterfeit right in the title. It says "Ebay".

  5. #5
    *Flashaholic* HKJ's Avatar
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    Default Re: Test/review of Samsung INR18650-25R 2500mAh (Green) Ebay

    Ebay is a good clue that they may be fake. I have tested a cell with this name four time, two was genuine, two not, both from Ebay.

    You can check them here: https://lygte-info.dk/info/batteryIndex.html
    Type the battery name into the search box.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  6. #6

    Default Re: Test/review of Samsung INR18650-25R 2500mAh (Green) Ebay

    Thanks, and in general for your very valuable service.

    Just a suggestion. . .

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