Incredible battery life in your unit!Full brightness will kill your battery. Period.
First couple of days I kept some rough notes. I mostly had brightness at or around half or slightly lower. My preference tends towards brighter, but I was in dimly lit spaces, mostly.
No specific app usage, mostly just web (reddit, Facebook, wiki, YouTube) and Netflix or Apple TV. I was using AirPods, so there are some notes re battery life on those. Bit of Mail.app usage. Notes were usage or observations,
20:00 100%. Web, Apple TV (PIP). AirPods @ 98% or so.
21:00 99%
21:20 98%
22:00 95%.
22:30 93% 5 min blanked screen, downloaded small app, setup +finger id
22:45 92% Facebook
23:00 91% TV
23:30 89%
24:20 85% AirPods @ 10%
01:00 81%. AirPods charged to 90%
02:00 76%. —sleep——
08:30 wake.
0830 73% Apple TV, web, Facebook
0900 67%
0930 62% (photos high energy usage in background)
10:00 59%
10:30 55%
11:00 52%
11:15 Plugged in.
My MBA M1 just 2 hours of use with brightness max. -6 clicks (50%) battery 100% > 89% (real percentage 84,5% in Coconutbattery). There seems to be some strong units out there and then much weaker ones or what is causing this???