On my box mods I think I'll start inserting a piece of thin stiff plastic between the positive end of the battery and the terminal when not in use, kind of like how some "batteries included" items come packaged. They both already have magnets for the battery covers and ribbon under the batteries, so yanking the battery can be done quickly if needed while in use. Not quite so easy to do on my DNA Zero v2 clone, but in an emergency the battery will come out w/o loosening the ground screw by giving a strong yank on the ribbon under the battery. Plus I tend to not overtighten the ground screw in the first place.