nwks - 1/9/2021 20:15

I am wanting to setup a 12vdc sprayer pump rated at 1-2gpm 4-10amp max draw, this won’t be used for more than 5 minutes at a time. The batteries I am wanting to use are Milwaukee M18’s, 5.0-9.0 high output, for the convenience of portability. I know that I need a dc/dc converter to get to from 18v to 12v, any certain type? Electronics is outside my expertise. Any help would be appreciated.