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11 thoughts on “How to test 18650 cells diy powerwalls”
  1. Avataaar/Circle Created with python_avatars Mujtabaahmed Khanjan says:

    can you guide me about Internal resistance of 18650, low is good for laptop battery or +60 is good?
    and with is maximum and minimum resistance of 18650 cells for used cells in a battery

  2. Avataaar/Circle Created with python_avatars Dr. T says:

    I just discovered this video. Did you end up getting the OEM battery? Where can I get it? I am very interested. Thanks

  3. Avataaar/Circle Created with python_avatars Benoit The Miner And Gamer says:

    so witch brand is the best?

  4. Avataaar/Circle Created with python_avatars D M says:

    hum. like testing a bunch of no-name unbranded items to see what one is the most un-branded?
    I mean in the end you have to test the cells before you use them in a project. doesn't matter what brand.
    if you can't obtain a small sample to test. that's probably a giant red flag

  5. Avataaar/Circle Created with python_avatars Jozsi Olah says:

    Laptop battery pack can fix bad cells by pumping – into the +, if it has to. By making a laptop pcb board, you may be able to fix individual cells, later inserting into other devices, it still works.

  6. Avataaar/Circle Created with python_avatars Wahfreak says:

    I do safety testing (short circuit and overcharging) on commercial 18650 and 21700 all day. I would never use any of those cheap cells. I’ve seen too many of them vent (at best), explode (at worst). I would never let them get above 70C on a charge or discharge. Even using good ones, all it takes is one mistake and your house will be gone.

  7. Avataaar/Circle Created with python_avatars Nelson Caceres says:

    jehugarcia, do you know where the best place to purchase two (2) ICR18650-32A batteries? I’ve been looking everywhere and most places I find have a minimum order of at least 100. I only need two of them. 😅

  8. Avataaar/Circle Created with python_avatars J English says:

    how to test 18650 battery total capacity without lowering the cut off voltage too much?

  9. Avataaar/Circle Created with python_avatars Tim Rollins says:

    I recommend stop caring what other people say. Takes up too much time

  10. Avataaar/Circle Created with python_avatars Hans de Groot says:

    Lol 1s balanced? How to balance 1 cell😁

  11. Avataaar/Circle Created with python_avatars Jari Kinnunen says:

    In Finnish Liitokala is flying fish. I don`t know what history name have? I've only seen chinese connection.

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