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Thread: Test/review of Evva 21700 5000mAh (Black-silver) 2021

  1. #1
    *Flashaholic* HKJ's Avatar
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    Default Test/review of Evva 21700 5000mAh (Black-silver) 2021

    Evva 21700 5000mAh (Black-silver) 2021



    Official specifications:
    • Nominal Capacity: 5000mAh
    • Minimum Capacity: 4900mAh
    • Nominal Voltage: 3.6V
    • Standard Charge Voltage: 4.2±0.5VV
    • Standard Charge Current: 2A
    • Max. Charge Current: 4A
    • Protection Circuit: Built-in, with over charge, over discharge and short circuit protection
    • Std. Discharge Current: 5A
    • PCB Protection Trip Current: 15A
    • Discharge Cut-off Voltage: 2.50V
    • Dimension: (D)21.60mm*(H)75.60mm max.
    • Weight: 75g max.
    • Cell origin: A Grade Samsung 21700 cells
    • Operating Temperature: Charge: 0°C ~ 45°C, discharge: -20°C ~ 55°C





    This is a high capacity 21700 cell with protection.










    The two cells match very nicely and the protection kicks in at higher currents, but it is a bit slow to reconnect the output, i.e. it failed to reconnect during my automatic test and I did not get all the curves.



















    Conclusion

    This is a good protected battery.



    Notes and links

    The batteries was supplied by Eeva for review.

    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 21700 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
    *Flashaholic* HKJ's Avatar
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    Default Re: Test/review of Evva 21700 5000mAh (Black-silver) 2021

    Sorry about the long pause from my last review, I lost the harddisk with all my data on it and it took some time to get my computer back to normal. There was no data loss, I have up to the minute (more or less) backup.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  3. #3
    KITROBASKIN's Avatar
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    Default Re: Test/review of Evva 21700 5000mAh (Black-silver) 2021

    Great to see your return HKJ.

  4. #4
    Flashaholic
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    Default Re: Test/review of Evva 21700 5000mAh (Black-silver) 2021

    I don't post a lot but I follow your reviews. Glad to see you back

  5. #5
    Flashaholic SAMongoose's Avatar
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    Default Re: Test/review of Evva 21700 5000mAh (Black-silver) 2021

    AWESOME BRO

    One machine can do the work of fifty ordinary men.No machine can do the work of one extraordinary man. -
    Elbert Hubbard
    Just because something doesn’t do what you planned it to do doesn’t mean it’s useless. - Thomas Edison


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