How to Fix/Revive Cordless Tool Batteries....

Replacement Batteries Power Tools: How to fix/revive cordless tool batteries. Part one: The process.. If you try this do it at your own risk.

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31 Responses to “ How to Fix/Revive Cordless Tool Batteries.”

  1. TheJanka51 says:

    thanks for the laugh 

  2. Richardj says:

    just because you can get a voltage doesn’t mean that there is any storage
    in the battery. Just replace it or study how batteries work. They can’t
    live forever.

  3. proculap montana says:

    Buy NEW batteries.

  4. dispatcher7007 says:

    Do they get useful again? getting a Battery to have a certaing voltage
    again is just a little part of the game. Can they deliver a current at this
    voltage is the more interesting question!

  5. Solar Companies Gold Coast says:

    Thanks Charlie Aguilar for showing us the process of fixing cordless tool
    batteries. This is a resourceful video that helps everyone do things their
    own, if not with the help of the solar panel installers/experts.

  6. Shedrick Fields says:


  7. Zdzichu Pol says:

    Thank for your post Chilly, How is that revived battery working
    you jast jara jara jara

  8. Doug Matthews says:

    i’ve seen a similar process done on old triode and pentode tubes. there is
    some kind of build up that gets knocked off and revitalises them as well.

  9. Mike Scott says:

    Will that work for a 24v battery?

  10. Kevin Fazzina says:

    Keep up the good work, now if I can only recharge my girlfreind

  11. TheHardwareguide says:

    The suspense is killin me man! Did you fix that thing or not?

  12. Simon Othen says:

    try putting your cam so we can see what you are doing !

  13. Jay Moore says:

    Thank for your post Chilly, How is that revived battery working?

  14. 42note101 says:

    Good video, align the crystals is what your doing. Another method that
    worked for my DEWALT was 5 or 8 hours in the freezer. Process base is soft
    freeze the crystals, tap with rubber hammer. Goal is moving the crystals
    back to the + / – position. Also use of car battery recharger on jump
    setting will work. Touch/release. Do not over heat. You can do this again
    if not 95-100% charge. FIBER0PTIC

  15. iggy151 says:


  16. Steven Leigh says:

    Before you try all of this for the Ryobi One batteries, try an easier
    process. Put the battery in its charger and plug it in, then quickly plug
    and unplug it multiple times. Vary the amount of time you have it plugged
    and unplugged. Sometimes plug it back in really quickly, sometimes wait for
    the lights to go completely out. It might take about 50 times, but
    eventually the red light may come on, showing it’s charging.

  17. jack flash says:

    Just a tip to him and all who post these how to do it videos…. rehearse….
    try it ahead of time to see if it works,,,, and rehearse!!!!

  18. Dave Burrows says:

    Wouldn’t you want to test something before you made a video to teach others
    how to do it?

  19. paul xmw says:

    Thanks for the Vid i just revived my 12v drill battery using your method
    Realy didnt think this would work but it did i used a 24 volt 3 amp drill
    battery to revive the 12 volt 1.3 amp. Tested the 12 v battery before the
    fix mesured 2.3 volts after the fix it instantly jumped to 12 volt. then
    recharged it Thanks

  20. William Ankrom says:

    I just threw out 2 Milwaukee and 2 Ryobi batteries! bummer

  21. Robert Fraser says:

    To avoid the possibility of a battery exploding in your face you can always
    run the wires across the room and tap them on the source battery(s) from

  22. Richie Rich says:

    lol holy crap dude I just fix 4 batteries that havent worked in years. I
    have an easier trick for you. Instead of using clips and shrink wrap and 2
    18v batteries just use a 12v car charger and put it on engine start mode.
    Mine put out 15v and worked like a charm! Cool video!

  23. PettyMower says:

    I’ve tried this with a dead 18v DeWalt. I wired (2) “good” 18v batteries in
    series to get a total of approx. 36v, and followed this video’s
    instructions. The battery now works fine! Thanks a bunch!!!

  24. sonny Godly says:

    reverse polerity will fix the bad one in pack,,,should take bad one or 2
    out and do the process.would work better

  25. sonny Godly says:

    Yes that process works but the batter will not hold load for long,what u do
    is take the bad ones out of pack shock them in reverse,then charge them.

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