Just updated my OS to Mojave this morning and brought my laptop to work. It was on full charge when I left home. 2hrs after using it, the battery percentage was down to 40% which never happened before during any of my regular use. Also, the texts on the screen are blurry.
MACBOOK AIR (13-INCH, 2017), macOS Mojave (10.14)
Ok, so i solved this problem on my MacBook Pro 13'' (Early 2015). It turned out that battery drain was caused by fully loaded CPU (almost 100%). So, you can check this out, just open Activity Monitor (Finder - Apps - Utilities) and then look up for CPU tab. And then just watch which apps and processes uses your CPU. You can also check out other tabs and overall system and CPU load.
So it turned out that my CPU was used by the process called "qemu system x86_64 mac" and this was the reason my MacBook Pro had zero battery after about 3 hours after full charge. If you have the same process, just google the name of it and then you'll find the link to the thread on Apple Community on how to delete it (it's not that simple tho).
It really worked for me so my macbook works fine right now.
My laptop's battery life has reduced from 8 hours to 3 hours after upgrading to Mojave. Apple needs to work on this issue as there is is also lot of lagging in my MacBook for the first time.
Apple should create a patch or someone please tell me how to downgrade back to High Sierra.
I am from India, updated my MacBook Air yesterday which is 1 week old, Mojave was draining battery like smartphone from 2015, the battery died in 4 hours against 10 hours on High Sierra with similar usage. Used time machine and back to High Sierra, now its back to normal.
I have a Mac air few months old. Just upgraded to Mojave and have the same issue. I close my laptop at 100% open it up the next day and its down to 70% without even using it. This is awful, its useless with a 2hr battery life.
i read it is because of the dark mode feature. The LCD works more on dark mode... not really sure but are you using the dark mode feature? IF you did, does switching to light mode fixes the issue? I am just curious.
I have same problem too. I am using early 2015 13" Retina MBP. Just installed Mojave yesterday, but I found that battery drained 10% in 30mins under new OS. That never happened the day before when I was still using Sierra (When I was using Sierra, a fully charged battery can be ran a whole day over 10hrs, but now I believe 6hrs will be the max for my MBP). Checked from system information, battery is healthy in normal condition, Cycle Count only 490.
What happened to the new OS? Any offical reply from Apple? Any solution to resume normal or can I switch back to Sierra?
I spoke to Apple support, suggested resetting the battery/memory by holding down the control, shift, option and power keys then release the first three at the same time. Also noted this update will take time to configure the file structure. It does this while sleeping and takes a incredible amount of resource. It took three days but my Mac has returned to normal all on its own or maybe the reset helped. Give it a try, sometimes waiting does pay off.
Spoke to Apple, I was skeptical when told it may take 24 to 48 hours for the OS to reorganize the file structure. Also suggested resetting the battery/memory by powering your Mac off then hold the left shift, control, option and power buttons down, then release the first three at the same time. I did that, not sure it contributed to the solution but on day three of the upgrade my Mac has rerturned to normal all on its own.
Give it a few days, things should be just fine. I’m fact this morning I opened to a 100% battery life after a 10hr sleep mode.
Cheers
Shawn
It's working for me so far. Turned on the MacBook this morning, and still have 99% power, its been unplugged and closed overnight. PowerNap has never been on. Some of the features activated by default are clearly aimed at desktops.
Starkfan126 wrote:
also lot of lagging in my MacBook for the first time.
I can't help you with the battery issue but regarding the lagging download and run Etrecheck. Copy and paste the results into your reply. Etrecheck is a diagnostic tool that was developed by one of the most respected users here in the ASC and recommended by Apple Support to provide a snapshot of the system and help identify the more obvious culprits that can adversely affect a Mac's performance.
For anyone having battery problems, usually the first thing to do is to reset the SMC:
How to reset the System Management Controller (SMC) on your Mac - Apple Support
Second, if this does not fix it, is try and see what programs are using a lot of energy.
Look at Activity Monitor's energy pane; or click the battery menu in the menu bar.
On a fresh install, Mojave seems to go a little nuts with Spotlight indexing. That means a tremendous amount of disk access, possibly even while your portable is "sleeping". There's a lot of disk I/O going on in Mojave behind the scenes, and I have some reason to think it doesn't handle corrupt files particularly well, so that could be contributing to your problem. Also, Mojave defrags in the background. Previous releases did as well, but combine that with its apparent difficulty accessing files it thinks are corrupted, and you might end up with the drive being hit even more than usually.
So best bet, for a portable, is to leave it plugged in for a day or two, at all times, after install.
(I put up a fairly lengthy discussion here; some of the issues I've found may be related to what you're experiencing: Frequent system hangs and freezes in macOS Mojave 10.14: Notes, reproducible errors, and possible workarounds)
Hi,
I have fixed with these 3 steps:
- Clean the cache (used CleanMyMac X)
- Reset the the NVRAM (Reset NVRAM or PRAM on your Mac - Apple Support)
- Fix the permission of the HD (disk utility -> S.O.S.)
Now battery works very good.
I had the same issue, my MBP 2017 drain 40% of battery each night.
After Reset NVRAM or PRAM on your Mac - Apple Support and How to reset the System Management Controller (SMC) on your Mac - Apple Support it seems to work well. 😎
I don't know how it works but it takes effect after 2/3 days after both reseting.
I wish it can help others.
Disable acrobat cloud sync settings, and reset PRAM & SMC, Then reboot in safe mode and select startup disk and run first aid, for me its resolved.. (MacBook pro 15" with touch bar).
See the following link to reset PRAM, SMC & SAFE MODE
Reset NVRAM or PRAM on your Mac - Apple Support
How to reset the System Management Controller (SMC) on your Mac - Apple Support
Use safe mode to isolate issues with your Mac - Apple Support
Hope problem resolve..
Downgrade to High Sierra
1. Backup all the files on the Mac to external hard drive, cloud (make sure your can approach separate files) because my Migration Assistant (times Machine backup) didn't have backwards compatible with an older version of OSX, if use Time Machine on the newer OSX.
2. Download High Sierra https://itunes.apple.com/us/app/macos-sierra/id1127487414?l=en&mt=12&ign-mpt=uo% 3D4 or the link "Go to the Mac App Store" on the bottom of the page Upgrade to macOS High Sierra - Official Apple Support
3. Get an USB Drive 8GB.
4. Make an Bootable USB drive. How to create a bootable macOS High Sierra USB Install drive - YouTube
5. HOW TO CLEAN INSTALL macOS High Sierra [With A BOOTABLE FLASH DRIVE] - YouTube
Hope this will help!
macOS Mojave battery drain
