I'd like that for my iPhone, too. The battery is brand new, there's no reason for me to charge it fully, and there's no reason for it to be off the charger 90% of my work day.What I'd really like is an option to always limit charging to 80% to preserve battery health, unless I explicitly select "charge to full now" in the battery menu bar. Current macOS guesses when to limit charging when you have "optimised battery charging" enabled, but in my case it often gets it wrong!