>- I have a new phone that charges over USB-C - but only fast charges with the included adapter, which looks like a regular USB-A wall adapter + A->C plug but a

>- I have a new phone that charges over USB-C - but only fast charges with the included adapter, which looks like a regular USB-A wall adapter + A->C plug but actually has some proprietary magic in it. Something about "unusual fast charging standards". USB-PD is standardized. Don't blame USB if the manufacturer decides to not implement it. >- Since I now have a 85W USB-C charger lying around, I thought I'd try it on my new phone. But if I plug the Apple adapter into the phone it makes very loud and alarming capacitor noises, especially when full - enough to wake me up in the middle of the night when it gets to 100% (and it takes until the middle of the night, because it doesn't fast charge). It#s not entirely unusual that cheaper charging circuits start to humm in the audible range if far under their designed output power.