MBP 16 - Battery drains at night inside sleeve.

zoomp

macrumors member
Original poster
Aug 20, 2010
67
111
I bought a 16" 1tb/32GB/5500/8GB last week in BestBuy. After a full week of observing and trying to understand (with apple support) why my battery would drain over night (around 20% sometimes more), I finally returned under the advisements of the Genius Bar. Sometimes it would be pretty hot when I took it out of the sleeve.

Yesterday I received a new one I bought from B&H, same model.

I went to sleep and it had 88% of battery remaining, opened this morning and it had 67%.

I installed nothing in this computer, nor even istats, which I tried on the other one just to understand what was happening.

Nothing is really running...

Anyone else experiencing this kind of behavior?

Cheers.

Ed.


Screen Shot 2020-03-13 at 9.08.51 AM.png
 

ThreeSpoons

macrumors newbie
Dec 8, 2017
2
1
The fans are working overtime to try and cool the laptop over night.
Think about sleeping in a sleeping bag, you might not be moving much but you are so well insulated you keep warm. . . thats what you are doing to your laptop.
 
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gazwas

macrumors 6502
Aug 11, 2008
293
235
Just shut it down overnight?

Much better for the battery too I believe.
 

BigMcGuire

Contributor
Jan 10, 2012
5,062
6,247
California
I put my 2017 MBP 13' in a sleeve every night - it loses approximately 5-10% a night. It is never hot tho as I make sure the fans are off when I put it to sleep (closing the lid). Only once in my whole 2 years of ownership has it not gone to sleep when I put it the sleeve (thankfully caught it not much later).

That's pretty excessive. In the energy and power you can set it to not do various things while on battery power in sleep mode (like Time Machine, check for mail, etc) - and see if that helps.

The fans should shut off when you close the lid - out of habit from past bad experiences with Dell laptops - I always make sure to put the fans up to my ear when I close the lid to make sure it is really "sleeping" before putting it in a sleeve then into my backpack.
 

Steve686

macrumors 68040
Nov 13, 2007
3,361
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US>FL>Miami/Dade>Sunny Isles Beach>Condo
Hmm.
If this does happen to your machine and you decide to keep it, shut it off at night.

I say that if you care about battery life because you are using almost 1/4 charge cycle every night sleeping on top of whatever you use daily. That adds up to almost charging your battery to full from empty around 65 times a year using your 18% drainage rate. Out of 1,000 average charge cycle life of MBP batteries, your sleeping computer is killing itself 6.5% on its own yearly.
 

jerryk

macrumors 603
Nov 3, 2011
5,586
2,795
SF Bay Area
Strange one. Just a guess, a new computer indexes a lot. Not sure if this shows in activity monitor. Can you try leaving the display open and plugged in for 24 hours.
 
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motulist

macrumors 601
Dec 2, 2003
4,080
346
Some software prevents a Mac from going to sleep, even when you close the lid, and even when you select sleep-now from the menu bar. Adobe is a huge culprit of this. It's crazy that Apple allows apps to override the users commands like this, but it does.
 

Glockworkorange

Suspended
Feb 10, 2015
2,511
4,172
Chicago, Illinois
I bought a 16" 1tb/32GB/5500/8GB last week in BestBuy. After a full week of observing and trying to understand (with apple support) why my battery would drain over night (around 20% sometimes more), I finally returned under the advisements of the Genius Bar. Sometimes it would be pretty hot when I took it out of the sleeve.

Yesterday I received a new one I bought from B&H, same model.

I went to sleep and it had 88% of battery remaining, opened this morning and it had 67%.

I installed nothing in this computer, nor even istats, which I tried on the other one just to understand what was happening.

Nothing is really running...

Anyone else experiencing this kind of behavior?

Cheers.

Ed.


View attachment 898947
Are you leaving it in the leather sleeve at night? That's your problem I bet.
 

Fishrrman

macrumors P6
Feb 20, 2009
18,552
6,281
Agree with gazwas (in #3 above).

Just shut it down at night and reboot in the morning...
 

VineRider

macrumors 6502
May 24, 2018
452
278
I had my MBP 2019 13" in a sleeve for 24 hours. Took it out today and it was still at 100%. Not shutdown but in sleep mode. Something isn't right with the OP's machine using that much power overnight. I don't think shutting it down every night is a good solution either.

To me, this doesn't seem normal unless there is some fundamental difference between the 13" and the 16" and power management.
 
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patwithamac

macrumors member
Jul 30, 2018
86
53
@zoomp Not long after getting my new MBP, I noticed similar behavior to that which you've described.
I don't recall exactly how much the battery drain was. But, it was considerable.
And it'll likely be different for everyone, depending on the specific environment in which the MBP is trying to sleep. For example, if your Bluetooth advanced settings are set to "Allow Bluetooth devices to wake this computer", your MBP may never fully sleep (or sleep for very long) if it's in an environment where there are a lot of other bluetooth devices walking by (eg. Apple watches, iPads, etc).

I was surprised to learn that an out-of-the-box MBP, running Catalina, is opt'd in for all kinds of options that will ultimately keep a MBP from "completely sleeping", from the time the lid is closed til the time the lid is opened.
In my case, I found that my MBP would wake every couple hours and do various things. Things like: checking mail & txt messages, and checking in with Apple to update current location (because Find My Mac is turned on by default), for example.

To get a better sense of some the reasons for my MBP awaking over night, I found it useful to run the following command in a terminal window upon opening the lid in the morning;

sudo log show --start YYYY-MM-DD --style syslog | fgrep "Wake reason"

Note: substitute a real date for YYYY-MM-DD

In my case, I ultimately decided to turn off;
- Power Nap
- Bluetooth (I don't use any bluetooth devices with my laptop anyway, so I turned it off all together)
- Wake for Wi-Fi network access
- tcpkeepalive (effectively disabling Find My Mac - I understand and accept the consequences associated with this decision)
- lidwake
- acwake

And I've configured my system to hibernate, rather than just sleeping (see pmset man pages for explanation of hibernatemode 25)
Looking at pmset -g output can be helpful in understanding current power management settings.
This is how mine are set;

user@hostname ~ % sudo pmset -g

System-wide power settings:
Currently in use:
standbydelaylow 10800
standby 1
womp 0
halfdim 1
hibernatefile /var/vm/sleepimage
proximitywake 0
powernap 0
gpuswitch 2
networkoversleep 0
disksleep 0
standbydelayhigh 86400
sleep 0 (sleep prevented by UserEventAgent)
hibernatemode 25
ttyskeepawake 1
displaysleep 15
tcpkeepalive 0
highstandbythreshold 50
acwake 0
lidwake 0


My MBP now goes into deep sleep, and stays that way, from the time I close the lid until I open the lid and tap the touch pad (or hit a key).
Just to give you a sense for what's possible... I've put my machine in my backpack with the battery 100% fully charged, left it for several days, and come back to find it still at 100% charged.

Disclaimer:
Deciding to turn any of those "convenience features" on/off comes with a cost (namely - battery consumption while sleeping). The consequences of those decisions are up to you to evaluate & accept.
The options I've shown in my pmset config settings are a result of "My choices". Whether those settings are appropriate to your situation is something you'll need to carefully consider when making "Your choices".
 
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Boneheadxan

macrumors regular
Jul 19, 2009
134
28
I recently had this show up on my 16" MBP but much worse. The battery would discharge completely overnight. I was having some issues with a CalDigit TB3 dock and performed a SMC and PRAM reset. Since then, the laptop doesn't sleep properly. iStats shows CPU activity even when put into clamshell mode.

After digging around a bit, at least for me, it seems like Find My Mac / HandOff seems to be the culprit. When I switch these off, it seems to sleep fine. Not sure if it's some kind of bug in Catalina.
 

Fishrrman

macrumors P6
Feb 20, 2009
18,552
6,281
patwithamac's response in #12 above is illustrative as to why -- with so much going on "behind the scenes" with the Mac OS these days -- the only way to GUARANTEE that the laptop isn't going to "lose battery" when sleeping is to simply shut it down.

I've been doing this with my Macs for 33 years now, laptops and desktops.
I even switch off the power strip to which the desktops are attached for the night.
 

motulist

macrumors 601
Dec 2, 2003
4,080
346
Interesting. Is it the Creative Cloud process running in the background (whichever launches with the CC menu bar icon)?
I don't think so. When I have after effects open my mbp won't sleep even if you close the lid, but when after effects is quit it sleeps fine. I googled and found Adobe programs are indeed the culprit.
 

caoimhin

macrumors member
May 11, 2006
67
42
Dublin
I don't think so. When I have after effects open my mbp won't sleep even if you close the lid, but when after effects is quit it sleeps fine. I googled and found Adobe programs are indeed the culprit.
That's a much more manageable problem then, albeit a bit inconvenient if you're not a logical "save" point. Still, thanks for the tip. I'll give it a shot and see how it goes.
 

MrGunnyPT

macrumors 6502a
Mar 23, 2017
923
567
If I close the lid over night while I'm connected to Citrix or some other heavy app it does drain a bit over night. I try to close as much apps as possible to mitigate the issue.
 

tCC_

macrumors member
Dec 14, 2016
64
33
If I close the lid over night while I'm connected to Citrix or some other heavy app it does drain a bit over night. I try to close as much apps as possible to mitigate the issue.
sudo pmset -b hibernatemode 25

That will ldo
 

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