

Alternatively, they could just charge to 80% and show that it is 80% charged, like iOS and macOS do.
edit: I seemed to have misread the comment above. It’s useful to not be lied too, in my opinion, because then you still have the option to charge to 100% when needed.
It didn’t work well for me on a 13” laptop screen. I didn’t want to give up that horizontal space.