>You'd think the USB-PD spec would have devices exchange their battery capacity, charge level, and AC power state. Screw that. They just need a signal for one

>You'd think the USB-PD spec would have devices exchange their battery capacity, charge level, and AC power state. Screw that. They just need a signal for one device to tell the other that it wants to charge or be charged. The rest can be left up to the UI. It's better if it isn't smart. I'm mystified that we have this many USB C cable types, chargers and data transfer speeds and there isn't some protocol for explaining what is available when a cable is plugged in or dictating behavior based upon that.