Do you by any chance live in a place with really high temperatures the past week? London UK for example has been over 30 degrees and both my macbook and iphone batteries last significantly less.
As it happens for me in London also I haven't noticed a drop in battery performance, but then my stamina has been knocked and so I may not have been working my M1 as hard as usual...
Only reason I’ve noticed is cause my phone doesn’t last throughout the day as it used to do a week ago, and my usage according to “screen time” is “down 14% since last week”. But of course this isn’t anecdotal evidence at best.
I usually keep it plugged in but when I don't I've noticed the battery has drained faster than I would have expected. That said; the few times lately that I've gone on battery, the drain speed has returned to what I would expect.
Not in the past week for me, but I have a M1 MacBook Air that started draining precipitously almost out of nowhere. The OS says the battery is healthy but it drains faster and requires more frequent charging than it did before.
Not in the last week, but I've had to stop using Apple Notes because it absolutely eats battery. Use Activity Monitor to check energy usage and I bet Notes is your culprit.
Check activity monitor and see if anything is wrong. My wife and my M1 Macbooks had iMessage go haywire a few weeks ago and they started chewing through CPU at 1000% usage.
