macOS Mojave battery drain

It seems like I have the solution.

After installing mojave my MBP 13” touchbar 2017 with 55 cycles went from 100% to 88% overnight.

I then accidentally open icloud and see NEWS, HOME app using icloud too.

I just disable then both, do a restart and it drains 0-1% overnight as usual. Hope this helps.

After a four-day test, I think a clean installation may be worth the trouble. Energy consumption is pretty much like that on a High Sierra system on my MacBook. I know there are hundreds of thousands of settings, different usage behavior and models, so if you feel insecure about the practicality of clean installation, back up all your necessary files (or settings via Time Machine, though I don't use it) first. If anything goes wrong, you can go back. Before you wipe out a disk and reinstall the OS, make sure you know how to return to your previous status if anything falls short of your expectation. (Microsoft has well taught me about a prudent disk image through its constant updates and occational unexpected failures.)

I don't waste time debugging this issue for Apple. It will probably take you a couple of days up to a week to reclaim all your settings, but it may be worth a try and the time. Think of it as the last resort and weigh the consequence. If that works, you don't need to wait for a patch.

Again, back up everything. Play it safe.

Finally I gave up and downgraded to High Sierra this is my first Mac and I was enjoying it until this. I could advise downgrading if that is an option for you. Am doing 10hrs where I was doing like 2 hours on Mojave which is just insane.

Back up everything you have on an external hard drive, and then restart your computer, right when you click restart, start pressing any of the following combinations of keys:

Command-R (this lets you restore your computer back to factory settings to the latest installed macOS you have on your computer)

Shift-Option-Command-R (this lets you restore your computer back to factory settings to the macOS it came with when you first bought your laptop, so possibly all the way back to ElCapitan)

Option-Command-R (this lets you restore your computer back to factory settings and install the latest compatible macOS with your macbook)

Sounds like the one you have to use is Shift-Option-Command-R and from there update to the desired macOS.

Good luck!

Mine now seems sorted after checking activity monitor, closing down some stuff, and disabling auto updates. 100% last evening at 10:00pm, and 97% this morning at 08:30. Lots of adjusting settings being seen in all the posts, which are clearly working for some and not others. I agree with all though, you shouldn't have to "get under the bonnet".

So I started to run pmset -g each time I wake my Mac. Every time so far, it has reported that sleep has been prevented by AddressBookSourceSync. I have seen this mentioned before also. It looks like the next step is to remove all internet accounts that are syncing an address book and see what happens after that.

Problem solved after 2months!!!!!!!!!!

I have (had) this terrible issue for 2months.. very frustrating ... and contacting Apple via twitter/chat/phone for the last two months. They are really amateur and every time they told me something crazy to check! for sure the problem is New OS Mojave but they don't accept and want to check from A-Z.

I tried all the solutions mentioned here but they didn't work.

Last thing that I checked was resetting SMC. Since 3 days ago the problem is 80% solved but not completely. now the battery lasts more and less consumption during sleeping mode. But still, I have some fluctuations in battery percentage for example it increase from 75% to 76%!!

Reset SMC in MacBook pro2016: 1- turn off the laptop > 2: hold (shift + control + option + power) for 10sec

Here is how to reset SMC: How to reset the System Management Controller (SMC) on your Mac - Apple Support

Hope it helps you!

Really sorry for Apple!!

After updating 10.14.1 for sure solve the problem. But I suspect that OSX also has the weird issue with iOS after new updates. To solve this, I always do as follows => after charging to 100%, reboot your machine (iPhone, iPad or MacBook ... any device has battery drain problem) with charging cable still attached. After rebooting, check the battery charge % to see if it is still stay on 100%. If it is still 100%, pull the charger, if not, charge to 100% again before pull the charging cable. (no need to reboot this time). Do it several cycle right after any new OS update, then the battery % reading should go back to normal. I suspect that it is the battery % reading messing up after the new updates. Rebooting the device will somehow turn it back to normal.

Besides this method, I also find quit all the app/software before computer sleep does help. With lots app/software opened in sleep mode (7%) drained a little more than without any app/software opened (3%).

My MacBook Air 2017 seems now back to normal. The last charge was at night of the Nov. 10. After charging, I have used about 1 hour of airplay video and the 100% battery had not drop a bit before going into sleep mode. Now it is afternoon of Nov. 12 and I still have 50% of battery left. In between, it has been sleeping through for 2 nights and couple hours of usage on Nov. 11. And I did not have any app/software opened at first night and I did have some app/software left open at the second night.

Hope these tricks can help !

i

dont think the age and cycle count are causing your battery drain .... have you tried shutting down and letting it full charge ?

keep an eye on activity monitor and put the cpu intensive processes up at the top, maybe you might get some ideas of whats using the most powet

Have you tried removing the com.apple.desktop.plist file from ~/Library/Preferences folder?

I'm not experiencing rapid battery drain when using my MacBook Pro, so I haven't tried this yet. But I have heard that removing the desktop preferences file (essentially causing it to be rebuilt clean) can help.

See This Simple Terminal Command Could More Than Double Your Retina MacBook Pro's Battery Life | Cult of Mac

Guys, simply change your MBP or MBA's sleep preferences from SafeSleep to Hibernatemode 25 and the problem is gone. 1-2% battery discharge a night. No more issues regarding sleep drain. As for the battery being affected while in use, i haven't noticed it on my 2015 MBP. Yet. ;)

that is what im saying !! I got a new computer and I still had the same problem thus you have to downgrade OS to older version here is a copy of sierra https://support.apple.com/en-us/HT208202

remember to back up your files on time machine whenever you do a system upgrade/downgrade just as a precaution it is always better to have your work saved

@pixelalb

not necessarily. If you turn the music off do you stop hearing sound? (wifi being disabled may not stop things still running/waiting for connection)

Is your content cache turned on? In System Preferences -> Sharing. If so, help us work this out and test disabling it

It can't just be devices with the T2 chip; my 2015 13" Retina MacBook is having this issue. The issue is Mojave, nothing else -- this issue never happened in High Sierra.

I work for a school district that just recently updated all their MacBook Airs to Mojave, and we are experiencing this issue on a mass level. Apple needs to figure this out. Again, we shouldn't have to mess with terminal flags/parameters to fix a messy OS. Battery should be functioning properly out of the box, and it isn't. Buying a new MacBook won't fix this issue either, as again, it's an OS issue.

I had this problem too. Photos was the culprit for me. I opened photos accepted whatever the changes were and let it download all photos while plugged in. No more drain and I'm at full battery usage!