Farmall450
Well-known member
Someone got me the 20V to 18V adapter for Christmas. I'd read about brain drain with it, and experienced it myself. Is that common or expected? Can't just leave the adapter on a battery in the drawer and use later?
Well, you kinda answered your own question. You can leave it on, but the battery will be dead after a few weeks...
DeWalt specifically states not to do that, as you've read here or otherwise. It's not very had to disconnect (or leave it in the tool).







