Repacking NiCd battery packs

Craft & Design Energy & Sustainability Technology
Repacking NiCd battery packs

The amateur astronomy site Astromart has a short, informative piece on testing and repacking dead power tool NiCd battery packs. These packs are filled with “Sub C” cells. Taking apart a “dead” pack, you can test the individual cells and replace only the bad cells.

Rebuilding NiCd Rechargable Battery Packs – Link


  • Cordless drills – Improve the battery – Link
  • HOW TO – Revive Nicad batteries by zapping with a welder – Link
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Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. His free weekly-ish maker tips newsletter can be found at

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