Somewhere I thought I read the Bachmann smoke units run on 3 volts, since they run on 12 volts it should not be an issue. I will do some testing as suggested above, maybe i can get them to work with some old 7 volt RC battery packs I have laying around.
My fictitious (as in not built yet) layout is going to be all battery powered and I didn’t want to run electricity to the layout. So I thought I would run the smoke unit i’m going to re purpose as a smoking chimney in a building I am working on from a battery pack.