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Thread: Battery rebuild

  1. #1

    Battery rebuild

    What kind of batteries do I buy to rebuild a lithium cordless? Can I just buy just plain ole rechargeable lithium batteries,or do I need special one? Can I get them at WalMart of some place like that? Thanks!

  2. #2
    Join Date
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    You need to do a lot of research on rebuilding Li cordless batteries and then ask yourself if it is worth the time, effort and potential danger. Keep in mind companies don't rebuild them for a reason.
    Of all the laws Brandolini's may be the most universally true.

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  3. #3
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    Seconded. There could be fire and explosions. For real.

  4. #4
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    Just look for good deals on replacement ones or buy a new tool/system that comes with batteries. LiIon packs are not really easy to repair and can be very dangerous.
    If at first you don't succeed, redefine success!

  5. #5
    Join Date
    May 2009
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    I've done it a couple of times BUT, I agree with Van's reply.


    John

  6. #6
    Join Date
    May 2008
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    Mountain Home, AR
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    I looked into rebuilding batteries a while back as a side business, but there's just not much profit to be had unless you can buy materials in bulk and have a capacitant discharge welder handy. I've heard good reports of folks using a quality soldering iron on NiCad and NimH batteries, but a CD welder is pretty much the only way to weld the tabs on lithium batteries - if they get too hot they will explode so it has to be a quick weld. There are many places online to buy the sub-C cell batteries that are normally in packs, but lithiums seem to come in a variety of shapes and sizes. You can probably still find them easy enough, but if you want to try it I would find someone with a CD welder that would let you use it for a few minutes. Check with your local heat and air shops. They use them to weld sheet metal for ducting.

  7. #7
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    MTO battery rebuilds some lithium batteries as well as other types. I've had batteries rebuilt by them and am very satisfied with the results.
    Lee Schierer
    USNA '71
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