Or just make it wireless..?
Or have Eva length cables.
Mika has no hobbies anyway. All he needs to do is make babies with his harem, and that can be done within Barbatos.
I think that was the best mecha battle I have ever seen period. So much happened in such a short period of time, and all of it was awesome.
EDIT:
Has no one invented electric wheelchairs yet despite there being flying robots around?