macOS Mojave battery drain

I have this problem as well on my MacBook Air 2015. It often goes to safe mode when booting it up from completely off. It will be laggy afterwards and kind of random but some parts of the screen will show green scratches that I have to restart it to get it back to work

I have the same issue on my Macbook Pro 15" 2018. The battery seems worse when I updated to Mojave. Around 40% drops of battery life compared to High Sierra. Apple need to fix this issue. Alos, it seems lagging in the user selection when opening my Macbook from a complete shutdown. I've got no issue in High Sierra. Apple needs to fix these bug ASAP.

MacBook Pro 13" Mid 2014

Same problem. Battery drastically drains after the update, in particular while the Mac is closed/sleeping.
For the moment, I'll downgrade to High Sierra and wait for further patches, hoping to get back original juice performances... I was really enjoying the new features and the overall behaviour of Mojave in my machine.

Thanks for the tips. Sadly, I've already reset the SMC as well as the PRAM, to no avail.

Also, no program seems to be using more energy than on High Sierra. Firefox has an 8,0 average energy impact, the rest are trifles. The battery is still draining almost right before my eyes.

Tyson Vaughan wrote:

Same here. 2013 MBP Retina 13". Updated to Mojave yesterday and was fully charged when I closed the machine and took it home. Opened it this morning and the battery was completely drained.

Not sure why this is happening to some people.

I never shut my MBP down, always leaving it sleeping overnight and I have not experienced this.

The only possible explanation I can think of is if the mac for some reason failed to enter sleep mode.

I've got the feeling sleep mode isn't functioning as it should. I've got powernap turned off but when I opened my MBP (15" 2017 model 14,3) this morning it had updated Pixelmator Pro overnight. That shouldn't happen. Also, when I open the lid, it's immediately fully functional and even the dynamic desktop is just right. High Sierra took a few seconds to get everything going. Note that I have had my MBP plugged in every night so I can't comment on battery drain but something's definitely off.

I'm experiencing the same drain during sleep issue (I lose about 15% over 7 hours - 13' MBP late 2016 with touchbar)

I've taken an intrepid dive into the power management logs and found that the system appears to wake every exactly two hours, gobble 5% power and go back to sleep! Do the entries below implicate bonjour?

Blocks of similar log entries to those below are repeated every two hours. Anybody else seeing this mode of failiure? can anyone experienced interpret these log entries?

x64

2018-09-28 02:09:09 +0100 Assertions PID 70(powerd) TimedOut BackgroundTask "Powerd - Wait for client BackgroundTask assertions" 02:00:08 id:0x0xb00008e8e [System: DeclUser kDisp]

2018-09-28 02:09:09 +0100 Assertions Summary- [System: DeclUser kDisp] Using Batt(Charge: 100)

2018-09-28 02:09:09 +0100 Kernel Client Acks Delays to Sleep notifications: [powerd is slow(8818 ms)] [RP12 driver is slow(msg: SetState to 0)(1128 ms)]

2018-09-28 02:09:09 +0100 Assertions PID 168(mDNSResponder) Created MaintenanceWake "mDNSResponder:maintenance" 00:00:00 id:0x0xd00008e9a [System: PrevIdle DeclUser kDisp]

2018-09-28 02:09:09 +0100 Assertions PID 168(mDNSResponder) Released MaintenanceWake "mDNSResponder:maintenance" 00:00:00 id:0x0xd00008e9a [System: PrevIdle DeclUser kDisp]

2018-09-28 02:09:10 +0100 DarkWake DarkWake from Deep Idle [CDN] due to RTC/Maintenance: Using BATT (Charge:95%) 0 secs

2018-09-28 02:09:10 +0100 HibernateStats hibmode=3 standbydelay=10800 rd=150 ms

2018-09-28 02:09:10 +0100 Kernel Client Acks Delays to Wake notifications: [IOBluetoothHostControllerUARTTransport driver is slow(msg: SetState to 1)(409 ms)] [AirPort_BrcmNIC driver is slow(msg: SetState to 2)(305 ms)] [UPSB driver is slow(msg: SetState to 2)(947 ms)] [UPSB driver is slow(msg: SetState to 2)(946 ms)] [IGPU driver is slow(msg: SetState to 2)(962 ms)] [HDEF driver is slow(msg: SetState to 2)(971 ms)]

2018-09-28 02:09:10 +0100 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using Batt (Charge:95%) 7210 secs

2018-09-28 02:09:19 +0100 Wake Requests [*proc=mDNSResponder request=Maintenance inDelta=7200] [proc=powerd request=TCPKATurnOff inDelta=28831]

2018-09-28 02:09:19 +0100 PM Client Acks Delays to Sleep notifications: [com.apple.apsd is slow(4327 ms)] [mDNSResponder is slow(9281 ms)]

Battery drains quickly even when not being used. I always leave my laptop on and just close the lid. That used to conserve the battery perfectly. After the update, the battery drains almost completely over the course of about twelve hours of not being touched. Before the update I could leave my laptop untouched for several days and it would still have most of the charge left!

MacBook Pro (Retina, 13-inch, Late 2013)

The font will appear blurry on any pre-retina mac. Apple removed what they used to use for making the fonts look sharper. On retina displays it’s not as noticeable, if at all from normal viewing distance, but it doesn’t look so great on the lower res displays.

In order to downgrade to High Sierra you must have the High Sierra installer .app. If you don’t then you can get it back if your MBP came with High Sierra (2017 or 2018) by rebooting the Mac and holding down Shift-Option-Command-R together and let go when you see the Apple logo and progress bar. You should first check that High Sierra will be installed by choosing reinstall macOS. If yes, cancel the installer and go to disk utility/mount the Macintosh HD volume only and erase it. If you have an SSD select APFS and GUID. Exit disk utility and select reinstall macOS. Don’t reboot your machine! If you made a mistake and didn’t erase the drive properly you may end with a flashing folder and fixing this is more complicated if you don’t know what you’re doing!

Here is Apple’s tutorial for this. It repeats what I said. Go over both before doing it or keep it open on your phone or tablet while doing it so that you don’t mess up! Good luck!

It is the third days I installed Mojave. The battery keeps drain away in a very short time. I lid off my MBP at 13:39 today there was 86% battery, I lid open my MBP at 22:28 (now) battery remains 62%! what the ****! Checked the system there is not battery consuming program in running!

I don't think my MBP is still indexing after third day installed!

Does anyone get Apple reply?

Hmm, I first saw this thread 5 minutes after I installed Mojave on my MacBook Air (2017) and was worried I'd shot myself in the foot. However, after 3 days a 100% charge is down to 50% (most of the time sleeping). In the last 18 hours the charge actually went from 50% to 52%. I think re-indexing pulled it down quite a bit at first. Gotta say, unusual battery drain doesn't appear to be happening to me.

Same here. On my 2017 MBP 13 inch after upgrading and having it closed and sleeping, after opening it up it was really hot for no reason? Battery life seems to be draining faster than usual but my main concern is how hot the laptop is getting. I really only have Chrome and Mail open and its a space heater! I did not have this issue on High Sierra. Hopefully a patch or update will be released soon.

Hi From Belgium,

same for me , I upgraded a MAcbook12 2015 ,and battery drain very fast. After 10Hours in sleeping mode, battery totally empty!! Grrrrrrr Of course PRAM , etc... change nothing....

No software running, nothing.... it seems that the computer don't go in sleep mode....

GREAT APPLE! 100 000 ingenieurs to have this king of bug!! 'Chapeau'

Note that immediately after installing an OS upgrade Spotlight needs to reindex the universe, which takes a lot of CPU time and power.

Once those indices are rebuilt, power usage should drop back to normal.