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Thread: Test/review of Keeppower 18650 3500mAh P1835J (Black) 2019

  1. #1
    *Flashaholic* HKJ's Avatar
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    Default Test/review of Keeppower 18650 3500mAh P1835J (Black) 2019

    Keeppower 18650 3500mAh P1835J (Black) 2019



    Official specifications:
    • Capacity min.: 3350mAh
    • Capacity typ.: 3500mAh
    • Nominal voltage: 3.70V
    • Charge voltage: 4.20+/-0.05V
    • Standard discharge cut-off voltage: 2.50V
    • Standard charge current: 1500mA
    • Charge termination current: 50mA
    • Standard discharge current: 3400mA
    • Max. continuous discharge current: 8A




    This is a 3500mAh protected 18650 battery from Keeppower.










    The two cells match very nicely. At continuous 7A the protection trips before the batteries are empty.





















    Conclusion

    This is very good quality protected batteries and one of the highest capacity 18650 batteries available.



    Notes and links

    The batteries was supplied by Keeppower 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 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
    Flashaholic
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    Default Re: Test/review of Keeppower 18650 3500mAh P1835J (Black) 2019

    Can you say what the bare cell is?

  3. #3
    *Flashaholic* HKJ's Avatar
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    Default Re: Test/review of Keeppower 18650 3500mAh P1835J (Black) 2019

    Quote Originally Posted by LED Monkey View Post
    Can you say what the bare cell is?
    Sorry, but I was asked not to.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  4. #4
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    Default Re: Test/review of Keeppower 18650 3500mAh P1835J (Black) 2019

    OK, gotcha. Thanks for yet another thorough review, looks like a very good cell!

  5. #5
    Flashaholic* neutralwhite's Avatar
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    Default Re: Test/review of Keeppower 18650 3500mAh P1835J (Black) 2019

    so this is the new 2019 one? so if I need this, it has to have that model number?.
    a 2018 model number would be different right?.
    thanks
    Malkoff Devices MD2 M61T, JetE17A Red AAA.

  6. #6
    *Flashaholic* HKJ's Avatar
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    Default Re: Test/review of Keeppower 18650 3500mAh P1835J (Black) 2019

    Quote Originally Posted by neutralwhite View Post
    so this is the new 2019 one? so if I need this, it has to have that model number?.
    a 2018 model number would be different right?.
    thanks
    Model numbers do not change each year, but reflect how the battery is build. I.e. the cell inside and protection/no protection.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  7. #7
    Flashaholic* neutralwhite's Avatar
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    Default Re: Test/review of Keeppower 18650 3500mAh P1835J (Black) 2019

    thanks HKJ.

    Quote Originally Posted by HKJ View Post
    Model numbers do not change each year, but reflect how the battery is build. I.e. the cell inside and protection/no protection.
    Malkoff Devices MD2 M61T, JetE17A Red AAA.

  8. #8
    Flashaholic* altermann's Avatar
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    Default Test/review of Keeppower 18650 3500mAh P1835J (Black) 2019

    Itís closer to 19*70mm size

  9. #9
    Flashaholic* akula88's Avatar
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    Default Re: Test/review of Keeppower 18650 3500mAh P1835J (Black) 2019


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