Fallon
Super Member
A 3d printer & a few wires & you can make your own adapters to go cross brand. https://www.thingiverse.com/search?q=Battery+adapter&dwh=765db1c30f91dff. Most of those are a couple hours of start it & forget it print time & $1-2 of filiment.Do you know if the batteries are interchangeable between those brands, though? I think DeWalt, Makita and Milwaukee have been pretty careful about that.
I'm on the Ryobi train personally. I actually made a corded battery at one point. Stuffed an old 18v laptop power supply into a dead battery housing. Occasionally handy for longer uses near an outlet, like using the vac to clean the car.