Ran into a weird Apple Watch S12 thing tonight: Put it on a portable Belkin battery to charge, then I heard a faint, staticky scratching or rumbling sound. A little like when you could hear old hard drives writing data.
Then it quickly went steady. Tick tick tick tick tick tick tick tick tick.
Take it off the charger, it stops. Restarted Watch, still does it. Never heard this charging previous Watch models this way. It seems... off, yeah?
@chartier have this sound with several different third party Apple Watch chargers. Never been able to figure out why