MacBook Air battery randomly will discharge to 80% while the MacBook is asleep. When I manually select "charge battery to maximum" it will do so. Occasionally, but not always, screen time usage shows as on, even though computer is supposedly asleep.
MacBook Air, 13.4
This may or may not be a problem. When sleeping, Macs still are active ... checking mail, messages, running backup routines, installing updates and such.
Are you saying it always drops from 100% to 80% when sleeping?
The apparent answer is that this is a new MacBook and "Optimized Battery Charging" must have been "On" as a default. The first time the battery discharged to 80% I selected charge to full in the menu bar which left Optimized Battery Charging on and it stayed on until turned off in System Settings. Problem solved, I hope.
Does it happen to say "Optimized Battery Charging"? This sounds like it's taking in affect, but it shouldn't be dropping it should be holding it's charge at 80% till a specific time.
That’s good then. Optimized Battery charging doesn’t drain your battery, it pauses charging once it reaches 80%. It continues charging so it’s at 100 at a certain time based on your usage.
MacBook Air battery randomly discharges
