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Renew Your Nicads by Zapping Them

Pretty cool video from Instructables TV. It shows how you can take DC voltage and zap your aging rechargable batteries back to life. The guy uses a MIG welder and renews an otherwise dead nicad. I’m not versed enough on electricty to completely understand how this works but it looks better than my technique which involves repeatedly slamming the batteries into my workbench in frustration. I’ve got two Craftsman drill nicads that are nothing more than paperweights, time to zap em I guess.

Would a car battery work for this as well? Oh, and what about the whole issue of the batteries potentially exploding and you know, ruining an otherwise nice workbench? Any electrically minded readers are welcome to enlighten us. Also the audio is a bit weak, crank it up.

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