Battery drain while sleeping.

raymanh

macrumors regular
Original poster
Aug 27, 2017
165
86
My 2016 MBP nTB has started to loose more battery while sleeping recently, I think.

After 9 hours, the battery went from 71% to 59%. Is this normal?

My energy saver settings are as attached. I also had a few programs open; Safari and Word.

Thanks for the help.
 

Attachments

raymanh

macrumors regular
Original poster
Aug 27, 2017
165
86
Yes that's the quoted figure. I do remember not long ago that my overnight drain used to be about 1%. Perhaps I should try 'put hard disks to sleep whenever possible'; but the hard disk should be sleeping anyway when the lid is closed right?
 

jerryk

macrumors 603
Nov 3, 2011
6,058
3,065
SF Bay Area
Do you have any USB devices connected that can power themselves from the computer? I had a USB hub and Audio Interface connected to mine and had even faster drain when I just closed the screen.
 

nejad

macrumors newbie
Oct 13, 2012
4
0
UK
My 2016 MBP nTB has started to loose more battery while sleeping recently, I think.

After 9 hours, the battery went from 71% to 59%. Is this normal?

My energy saver settings are as attached. I also had a few programs open; Safari and Word.

Thanks for the help.
"Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet." (quote is from Apple but cmd+R+on/off works for me)
After selecting the language start the "Disk Utility" app (last item in the menu that appears) and run "First Aid" both on boot disk (appears highlighted) as well as your hard disk (Macintosh HD)
Note that it'll take a while for the computer to start in system mode.

Restart the computer once you have done the above.

You may need to do the process twice to "improve" the improvement!
 
Last edited:

Picapau21

macrumors 6502
Apr 26, 2015
450
185
Did anyone try this
"Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet." (quote is from Apple but cmd+R+on/off works for me)
After selecting the language start the "Disk Utility" app (last item in the menu that appears) and run "First Aid" both on boot disk (appears highlighted) as well as your hard disk (Macintosh HD)
Note that it'll take a while for the computer to start in system mode.

Restart the computer once you have done the above.

You may need to do the process twice to "improve" the improvement!
Did anyone try this out or solve the battery drain issue? I've started having issues with battery life as well and not keen on doing a clean install.
 

sixonjack

macrumors newbie
Aug 7, 2011
2
0
"Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet." (quote is from Apple but cmd+R+on/off works for me)
After selecting the language start the "Disk Utility" app (last item in the menu that appears) and run "First Aid" both on boot disk (appears highlighted) as well as your hard disk (Macintosh HD)
Note that it'll take a while for the computer to start in system mode.

Restart the computer once you have done the above.

You may need to do the process twice to "improve" the improvement!
Anyone know why my internal Macintosh HD shows unmounted? Is that correct? Running First Aid on the Macintosh HD is greyed out. I was able to run First Aid on Disk Image OS X Base System.

I never had a problem with battery drain at all until I did a clean install of High Sierra. Now the battery drains while doing nothing.
 

Painter2002

macrumors 65816
May 9, 2017
1,088
773
Austin, TX
My 2016 MBP nTB has started to loose more battery while sleeping recently, I think.

After 9 hours, the battery went from 71% to 59%. Is this normal?

My energy saver settings are as attached. I also had a few programs open; Safari and Word.

Thanks for the help.
So I had this issue on my 2017 MBP w/TB, and somewhere on a thread here I read about turning off notifications while the computer is sleeping. They are ok by default, and once I turned them off I went from losing 10-16% a night to 2 or less percent a night I’m sleep mode.
 

casperes1996

macrumors 603
Jan 26, 2014
5,314
3,135
Horsens, Denmark
Anyone know why my internal Macintosh HD shows unmounted? Is that correct? Running First Aid on the Macintosh HD is greyed out. I was able to run First Aid on Disk Image OS X Base System.

It is correct that Machintosh HD should be unmounted in Recovery, since the recovery system is what's mounted, not the main system. However, you should be able to run first aid on it.

Instead, try booting into single user mode (hold cmd+s on boot) and run "fsck -fy"

If it does not show "The volume appears to be ok" or something similar, run again until it does.

When it's done, type "exit" to boot the system.
 

Honza1

macrumors 6502a
Nov 30, 2013
584
215
US
So I had this issue on my 2017 MBP w/TB, and somewhere on a thread here I read about turning off notifications while the computer is sleeping. They are ok by default, and once I turned them off I went from losing 10-16% a night to 2 or less percent a night I’m sleep mode.
My daughter had similar problem on her Air and I dug out on line instructions how to check what is preventing sleep (https://www.howtogeek.com/302942/how-to-figure-out-whats-preventing-your-mac-from-sleeping/). After some digging it turned out to be sound which was preventing sleep. After some more searching on the computer and what could be using the sound system, I found out I needed to remove Boom 2. It was forcing sound system to run even when Air was closed and that was draining the batteries. Since then, no battery loss over night observed.
 

casperes1996

macrumors 603
Jan 26, 2014
5,314
3,135
Horsens, Denmark
My daughter had similar problem on her Air and I dug out on line instructions how to check what is preventing sleep (https://www.howtogeek.com/302942/how-to-figure-out-whats-preventing-your-mac-from-sleeping/). After some digging it turned out to be sound which was preventing sleep. After some more searching on the computer and what could be using the sound system, I found out I needed to remove Boom 2. It was forcing sound system to run even when Air was closed and that was draining the batteries. Since then, no battery loss over night observed.

And removing Boom also gives you more accurate, less distorted audio! Double bonus!
 
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