My wall happens to be think right there the way it was framed so I mounted an electrical box inside with a USB outlet. Then used the cable it came with. The red and black wire is part of the wireless charger with a micro USB female port.
All the parts I bought except the magnets are listed here. All secrets are listed by Beckwith really.
I have not had it discharge to 0 yet but it is not hard to pop of the back and the Wireless charger is taped on so thats not to hard. 99% on the time it stays on wall.