How to revive a nicad drill battery

Revive nicad batteries by zapping with a welder, Intro: revive nicad batteries by zapping with a welder. nicad batteries often die in such a way that they won't take a charge and have zero voltage.. How to fix: zap a dead cordless drill battery (nicad, Got an awesome cordless drill with dead nicad battery packs and don't want to throw it out? maybe a welder is the answer you're looking for if you are. Restore-revive-zap old dead drill battery - free - youtube, Using a welder you can repair that old work battery you use with your tools. by shocking the positive and negative ends of the battery with a welder, you.