How to regenerate NC- and NMH-accumulators?

Heinz54, I am currently in the process of rebuilding a few sets for a rechargeable drill myself (watch for the guide coming soon ;-) Yes, there is a way, especially for the NiCad Battery packs. Since I am not sure which particular equipment you have, I can only give you a generic answer. A battery is simply a group of individual cells; as with any battery, one or more cells will be weaker than the rest. Ni-Cads of any given size differ. Most cordless packs consist of any number of 1.2 volt cells in a size known as "Sub C", The battery packs are based on nicad battery technology and the packs are built up from series connected sub-c cells. In a complete battery you'll find these cells soldered (or spotwelded) together. If you remove the faulty cells, you can simply replace it with another one of equal size. I just repaired a single cell in a battery pack for around $3 versus replacing the whole battery for $28. Again, your battery pack may look a bit different, it may also use different cells, but most of them can be replaced relatively easy. Check on here http://www.southgatearc.org/techtips/rec... for some info on "recovering" the batteries and on here http://www.kichline.com/chuck/fixit/maki... for an idea how to rebuild a Makita pack . Hope this helps, good luck.