Noname Russian $17 wireless charger somehow makes less high pitched coil noise than my fancy nomad charger.

Yes it’s ugly. Yes the led is blasting and yes I painted over the led with a black nail polish.

I disassembled the nomad charger and located the coils that were making noise. I’m going to either fill them with epoxy (a common technique used by gpu enthusiasts to get rid of coil noise) or replace them completely.

TL;DR:
nomad — bouba
noname russian charger — kiki