Grega994 basically hard wires a 5v charger into the Pi, then builds it into the case.
From there, he can simply plug the Pi directly into an outlet.
Raspberry Pi Power Case| Instructables
Make a Raspberry Pi Case that Plugs Directly Into the Wall
If you tend to use your Raspberry Pi as a headless machine, you don’t have a lot of cables to deal with. If you want to get rid of one more, Instructa
