I’ve had the MacBook Pro M2 for about two months now, connected to power 24/7, with an external screen, keyboard and mouse.
I was worried it will kill the battery, but then I found out it has a battery saving mode.
Today I worked remote for an hour and a half. I thought it will go down from 80% to like 60%, 65% if I’m lucky.
It didn’t go lower than 77%. The Mac used 3% of it’s battery (at 80% when I left home) for 1.5 hours of work. I’m very impressed.