User profile for user: asbentos
asbentos Author
User level: Level 1
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MacBook Pro is draining battery while it's turned off - Battery discharges 30% overnight

I have a 2021 M1 Macbook Pro, Most of the time I used it with the charger, and from time to time I let the mac to run out of battery, maybe about a month or more I realized the battery started to drain faster than it usually does, and a couple of weeks I realize the battery drains even when it's shut down.


When computer is power-off it drains about 30% every 6-9 hours. It seems like the computer never has turned off and is still working (and discharging the battery). It occurs when either the computer is sleeping or powered-off.


The battery has a normal condition of 92%. I have tried things such: running the apple diagnostic test (no problems found), disabling the background apps, turning off all the improved battery functions, activating the saving energy functions, I turned off Bluetooth and wifi before turning off the Mac, disabled non-native software such Microsoft Office, I even reinstall the latest macOS operating system (Sonoma 14.0) Nothing is working, the problem persists.


Did anyone had the same problem? If yes, Did you solve it? How did you do it?



Posted on Nov 3, 2023 2:42 AM

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User profile for user: HWTech
HWTech
User level: Level 9
68,138 points

Posted on Nov 12, 2023 9:42 AM

Make sure to disconnect the power adapter and all physically connected external devices prior to selecting "Shutdown" since disconnecting items from the laptop can trigger the laptop to power back on. Also avoid touching any key on the keyboard or even the Trackpad since that can also trigger the laptop to power back on. Apple loves to include very useless & annoying features these days.


Before powering off the laptop, make sure to press the Caps Lock key so its LED is lit. When the laptop is completely powered off, this LED should go out so at least you know the laptop reached a power off state and did not get stuck closing down macOS.


Edit: The laptop can be triggered to power on if the lid/sleep sensor is triggered as well. Sometimes this is triggered by moving the display, or even by moving the laptop to or from a metallic or magnetic surface. A bad or misconfigured Lid Angle Sensor could be at fault too, although you can check if this sensor is working by logging into macOS, then closing the lid. Slowly open the lid and peer inside to see whether you can see any video....if you can, then this sensor is not working. Normally you should be greeted with a login prompt as well unless you have the laptop configured to automatically log in.

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User profile for user: Grant Bennet-Alder
Grant Bennet-Alder
User level: Level 10
139,715 points

Jul 5, 2024 9:33 AM in response to polisny

<< ...sarcastically...>>


Sarcasm is impossible to determine reliably in this written medium between strangers. You need to know the writer well, to determine what they have written could not possibly be true. In this case, what I wrote was intended as a serious work-around.


There have been many posts by readers complaining their Mac was out if battery by morning. I have repeatedly suggested that their Mac might not actually be sleeping when requested to do so by closing the lid, and my serious suggestions for investigations have elicited NO responses. Readers appear to want a fully formed elegant final solution handed to them. The bad news: There is none.


The suggestion for further investigation was to connect the power adapter, wait a moment for the connected - disconnected - connected circus to settle down, then press the caps lock key to light the light, and choose Sleep from the  menu. if the light goes out after a few minutes, your Mac is actually sleeping, and otherwise it is NOT.


Since no one has responded that they are trying my debugging technique, or learned anything feom it, I concluded most readers do not want to try something that might be WORK. So instead, I posted my simple work-around: Connect the power adapter, and you will have plenty of power in the morning, regardless of what happened during the Night.


It was not intended to be sarcastic. It is a serious work-around for readers who are not willing to do any work to find the underlying reason for their subtle and and likely "un-related to anyone else's" reports of no battery in the morning.

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MacBook Pro is draining battery while it's turned off - Battery discharges 30% overnight

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