Alot of Guy like me out there not sure of the app. or how many cells this would take to power/ or the app.... If you could give a little more info on your post with applications/ cells may help the rest of us trying to get started in the buss.. were not sure if this is something we need or where we would put it... is this a motor for P scale/Mono/ Hydrdro ( rigger) not sure if you could help us out... that would be greatly appreciated.