[fencepost]

Samsung at some point a few years ago added the ability to cap charging below the maximum (was 85% until an update this year dropped it to 80%). Settings, Battery, Battery Protection. I believe this roughly corresponded to their extension of providing OS or security updates for 5 years.

iPhones have this capability as demonstrated by their "Optimized battery charging" that caps at 80% overnight "then finishes charging before you normally pick up your phone" or some crap like that, BUT they only let you set an actual cap on the charge level on the 16 (and 15?) even though older models should have the same capability. Yes, this picture you can't see is me flipping Apple the bird while holding my 14 Pro that's down to 87% of original capacity because I can't cap the charge.