@ifixcoinops I tried this a few years ago but with 3mm plywood instead of 3/4-inch
at the time it was nearly impossible to get an SBC board that would run on the kind of battery board that could do pass-thru charging; pine64 was the only contender and their boards tended to just randomly stop working after a while (no idea if the situation has improved since then but I should really look into it)
https://atreus.technomancy.us/markv
looks cool as hell tho