Before one considers a GNOME Shell "quick setting" toggle for temporarily charging your battery to 100% (if you have a one-off need for more capacity for a long mobile work day), I think the more fundamental place to start solving the puzzle might be the GNOME Settings app. I spent some time thinking about the simplest UI solution I could imagine for this: a boost button that appears there when your laptop is set to "Preserve Battery Health" mode. Filed here: https://gitlab.gnome.org/GNOME/gnome-control-center/-/work_items/3802 #GNOME