[mystik21]

Interesting...I've used my Apple MagSafe charger since its release with the iPhone 12 and I have never once noticed a whine or ticking from it. AFAIK, I do not have exceptional hearing loss from age and I am able to hear all but the highest of frequencies in the audible spectrum. Would you call it particularly high pitched?

[gambiting]

Yeah.....like a very high pitched whine. At low battery level it's pretty much steady, then as it gets close to 100% the charger clearly provides power in pulses as it goes on and off with longer and longer gaps.