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Thread: Test/Review of TrustFire TF26650 5000mAh (Flame)

  1. #1
    HKJ's Avatar
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    Default Test/Review of TrustFire TF26650 5000mAh (Flame)

    TrustFire TF26650 5000mAh (Flame)

    I have tested this battery from two different sources.



    Official specifications:
    • Brand: TrustFire
    • Model: 26650
    • Voltage: 3.7V
    • Capacity: 5000mAh (actual 4000mAh)
    • Rechargeable Li-ion battery
    • Built-in protection circuit
    • Great batteries for your flashlight or other devices
    • Dimensions: 2.68 in x 1.02 in x 1.02 in (6.8 cm x 2.6 cm x 2.6 cm)
    • Weight: 6.38 oz (181 g)




    Notice the difference in weight between the two tested batteries.
    The charts are not using the same scale as the 18650 charts, due to the higher capacity of this battery.



    From DX it is the usual envelope.








    They have slightly different capacity, but not much. With the weight difference I had expected more difference.











    The two batteries has a different current limit, it is not easy to see on the chart, but one trips at 6.9A the other at 7.6A.









    TrustFire TF26650 5000mAh (Flame) Manafont



    Official specifications:
    • Operating voltage: 3.7V
    • Capacity: 5000mAh
    • Ultra-high capacity and premium built quality
    • Protected to avoid over-charged or over-discharged




    These two batteries did also have a weight difference. They are also slightly longer than the DealExtreme version.



    I did only get one battery per envelope, because I ordered them one at a time.























    Conclusion

    This battery has about 30% more capacity than a 18650, but about 100% more volume, without being able to sustain more current drain. But it does keep a higher voltage than any 18650 battery under load.
    The battery has less capacity than stated on the cell.

    For a cheap battery it is acceptable.

    The Manafont version are slightly better than the DealExtreme version, I cannot tell if this is random variations or not.



    Notes and links

    I have added the battery to the 18650 comparator, this makes it possible to compare voltage at different loads.

    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
    Last edited by HKJ; 06-02-2012 at 07:09 AM.
    My website with flashlight, battery and charger information: lygte-info.
    More than 200 battery reviews and 80 charger reviews.
    Compare 18650 LiIon batteries or smaller (RCR123, 16340, 14500, 10450) LiIon batteries.

  2. #2
    Flashaholic*
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    Default Re: Test/Review of TrustFire TF26650 5000mAh (Flame)

    What chemistry is this cell? The capacity seems too low for a LiCo but the discharge looks too weak for an IMR. Maybe just a rather mediocre LiCo?

  3. #3
    Flashaholic*
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    Buttrock Re: Test/Review of TrustFire TF26650 5000mAh (Flame)

    BTW, just checked out your new 18650 comparator...VERY cool! Good job.

  4. #4
    HKJ's Avatar
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    Default Re: Test/Review of TrustFire TF26650 5000mAh (Flame)

    Added a test more of same battery but from another dealer.
    My website with flashlight, battery and charger information: lygte-info.
    More than 200 battery reviews and 80 charger reviews.
    Compare 18650 LiIon batteries or smaller (RCR123, 16340, 14500, 10450) LiIon batteries.

  5. #5

    Default Re: Test/Review of TrustFire TF26650 5000mAh (Flame)

    Has anyone found out what chemistry these cells are? I'm interested in using them in one of the over-rated 7 Cree LED "8000 lumen" lights on hikes with my dogs, they may rattle around in my pack and was wondering about safety. I know they are protected, but the above test seems to show they are not consistently protected to a standard...

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