Question: are dewalt batteries interchangeable with milwaukee?
Answer: Everyones 20v system is incompatible. But Dewalt has made it so you can get an adaptor to use the newer batteries on the older line. ... Not 3rd party, but Craftsman 20V MAX and B&D 20V are the same battery system. I've got Craftsman Drill/Driver and B&D yard tools and use the batteries interchangeably.