I checked with Sears and they have replacement battery that fits but is not the same as the origional. I will probably buy one from Batteries Plus so I don't have to pay shipping. The prices are the same.

I took one of my MAC batteries apart and they have individual cells soldered together to fit inside the case. It is too complicated to replace the cells. I just don't have the patience I used to.

I will eventually just get a combination set with Drill/Drivers, Flashlite, Etc. Makita or Bosch I think.

Is Dewalt a reliable brand? They seem to have a lot of different tools and are available in different stores.