She thinks all Android phones use the same charger

Android is the OS, not the phone. So using a phone charger, for something else, could damage it, or not charge it. Unless the charger is smart, and doesn’t charge at the full output if the device doesn’t support it. But why would a charger for your phone be smart? The one it comes with doesn’t need to be.

I have two four port chargers, that are supposed to adjust the output.