With this menu bar app it is possible to keep a chronically plugged in M1 Macbook at 80% battery, since that will prolong the longevity of the battery. This app will not work on non-M1 macs. In that case try the free version of AlDente.
Supercharge your menu bar with Bartender 6, built just for macOS Tahoe 26
(save 10% with code: MACMENUBAR)