I limit my laptop battery charge to 80% with a third party software tool. Laptops can generally bypass the battery and directly power themselves from the wall.
Does this new 80% battery limit setting imply that the new iPhones are able to do the same? Implication would be less battery wear while docked on a desk/in a car or due to long “AAA” gaming sessions, since it will draw power direct from the wall rather than using the battery as a middleman.
I believe this would slow down charging until you need it.
I unplug my phone like 8am every weekday so when I charge at night it says it will charge slowly past 80% until 7am instead staying at 100% from 12am to 8am.