Hip Hop Slave Sabre

Do you think you could get the inverter narrow enough to slide down the seatpost ?
I reckon I can, but like I say I would just be taking apart an inverter and reassembling it with a bit of chopping and soldering.

Yes I do, I reckon you could get the lot inside the seatpost with a bit of though, then just pull the seat post out and plug a charger into the base of it to recharge the battery!