DeWalt and Milwaukee batteries are interchangeable?

Archived from the Tools In Action forum (Dewalt). This thread is read-only.

Long Dong BoloneyMember since Jun 2025

Something I didn’t know until yesterday was that a DeWalt battery will fit in a Milwaukee M18 tool if pressed forward enough, to actually work it. The polarity and everything is the same. If actually trimmed a little on the front edges where it slides in, which I don’t recommend, it could be made to fit just as snug as the original.

Eric – TIAMember since Jan 2010

Interesting, this is the first time I heard this.  Now I will have to try, lol

RT29Member since Feb 2018

Never heard that, but they do sell adapters. I know because I’m Team Mustard and Ketchup. lol. But be careful with adapters because Milwaukee 18v, DeWalt 20v, Flex24v other batteries might overheat the Milwaukees. Check out this vid 

 

maxtolsoMember since Jun 2025

Yeah, I’ve seen that too — the contacts line up surprisingly well. Still, I wouldn’t risk it long term; those small fit differences can cause heat or connection issues.

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