I have a few days old MBP 16 with M1. I turned it off and left it to charge with lid closed. When I have opened it - I noticed that it was uncomfortably warm. It got sort of normal after I've opened the lid and turned it on. Is this normal behavior?
Almost… something like 15%. When I turned it on, the problem went awayI run my MBP 16 M1 MAX all the time in clamshell mode and can rarely get the fans to even run... its never been uncomfortably warm. was the battery charging from zero?
Mines never felt hot charging, but then again I don't let it go as low as 15% which is what the OP did.It's normal for it to warm up while charging, but it shouldn't get hot.
Does turned off mean shut down from the Apple menu, or just sleeping from closing the lid? If the latter, it may still be doing stuff, including indexing, that would add heat. (There's a 12-hour column available under Energy in Activity Monitor that will report earlier activity that might happen while "sleeping.")
It is not like I've got burns, but the laptop was much hotter than I've got used to it after working with it for a few days (included plugged in), which really surprised me.It's normal for it to warm up while charging, but it shouldn't get hot.
Does turned off mean shut down from the Apple menu, or just sleeping from closing the lid? If the latter, it may still be doing stuff, including indexing, that would add heat. (There's a 12-hour column available under Energy in Activity Monitor that will report earlier activity that might happen while "sleeping.")
Its pretty obvious on the way the MBP works that its not totally off when you put it in a off state. You lift the lid it immediately turns on. Use free version of Mac Fans Control 1.5.11 to see what the various temp sensors show after waking up laptop after fast charging. Do you normally use it on battery power for extended periods compared to it plugged in to charger? Are you using macOS 12.3.1 yet?Nope. Temps went to normal when I turned it on. Air circulation is kinda irrelevant if the laptop is turned off (shut down from the menu, not sleeping), as fans are not working anyway.
The MBP has Optimised Battery Charging see the followingI am not sure you are correct - if you lift the lid it turns off - but it does go through the regular boot process. I doubt fans can turn themself on when it is turned on.
I am on 12.3.1. As for "normally" - I had it for few days - I do you use it on battery often, however.
BTW: How does it affect the battery longevity? Should it be plugged on when possible, or not? Or it doesn't matter? What do usually people do?