DIY HACK – Revive Nicad Batteries by Zapping with a Welder

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Wow, this is a cool HOWTO we didn’t know before… This could be useful for laptop batteries…nice!

Nicad batteries often die in such a way that they won’t take a charge and have zero voltage. This usually means they’re shorted out by crystal dendrite growth.

Here’s a method of bringing them back to life by zapping those shorted crystal dendrites away with too much current and/or voltage. We’ll use a welder as a power source. You could also use a car battery, a DC powersupply, or almost anything with some voltage. Charged-up capacitors are popular for this because you can get a very fast pulse out of them and still limit the power. it’s a lot safer that way. Speaking of which,

If you get killed by a poisonous explosion it means you did something wrong.
Electrocution is a real possibility also.
Ask your parents how to not electrocute yourself with a welder.

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4 Responses to DIY HACK – Revive Nicad Batteries by Zapping with a Welder

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  2. Izl says:

    what are these batteries used for anway

  3. girrrrrrr2 says:

    drills…cordless tools…

  4. Izl says:

    ohhh those, havnet had a problem with any drills

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