>>10558179The only way I see powered armor of any kind being viable is if it's made of electromagnetic or taps into it in a sense that it doesn't have plates to contain as much as to manage a personal gravitational field that can make one stronger or stop objects from flying into you in a sense that they would be deflect or crushed when they reach the projected field around the body
As for keeping it powered up well it doesn't have to be as long as you tap into the earth's core.
Basically this
https://www.youtube.com/watch?v=A4fmhD0sf_M 