Why my rog phone 5s has no power and not charging?

Hey, John.

I haven't personally seen the internals of your phones, so I can't say for sure what the problem is. But there are a few possible reasons why they won't charge. The first thing you can do is just try a different charger or battery. If this doesn't work, double-check to make sure all of your battery cables are securely and properly in place. I'm sorry I couldn't offer more help, but I don't work with smartphones very often. I specialize in video game consoles and accesories.