Stux

I hope this gets up, I really do, as changing out batteries on various PUp trains is getting real old real quick, One of the incredible things with the old lego LiPo PF battery pack was the possibility of powering via track power (either 9V or 12V rails) Is there any possibility of being able to "recharge while operating" the KeyBrick One, but with something closer to track power without having to devise a 9/12V -> USB conversion? The dream would be to have a Pup train which would be able to recharge while it was on live tracks, either on parts of some loops, or on sidings/stations etc. Myself, I'd like to use old style 12V middle rails to supply 12V for recharging at certain parts of a layout.