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macOS Mojave battery drain

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)

Posted on Sep 25, 2018 9:17 AM

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743 replies

Nov 5, 2018 6:29 AM in response to hvbris

Hello all, I have the same problem with my macbook pro. I have a MacBook Pro (Retina, 15-inch, Late 2013). After installing Mojave a few days ago I noticed that the laptop's battery has been raining faster than usual. I timed it and the battery drops about 1% every 4 or 5 minutes. That was not the case before the update to Mojave. As an example. I turned the laptop on at 09:00AM with the battery at 100%. It's now 9:25AM the battery is at 94%.


The work load has not changed. I'm using the same apps I normally use: Chrome, PS, LR, Skype. Nothing out of the ordinary.


My girlfriend has the same exact laptop running Mac OS Sierra, with the very similar work load and she doesn't have this problem.


My guess is that Mojave's got a bug that's causing the battery to drain faster than usual. Hopefully the Engineers at Apple with hear about this problem and release a patch soon.


As it's now I can't use my laptop without plugging it up to electricity. This is very frustrating.


Thanks.


ps. If Apple need I'm willing to share usage and system reports to help debug this thing.

Nov 6, 2018 12:54 AM in response to hvbris

I too have this problem on 2 devices.


On a rMBP 15" late 2013 the battery drains multiple times faster than it used to during normal workloads. On a brand new MBA 2017 the battery drains 20-25% over night.


I've reset the SMC and NVRAM on both of them and upgraded to 10.14.1 but it doesn't help. The MBA is interesting because the first night after the resets it didn't drain almost at all, maybe 1-2% but the next night it went down 20%.

Nov 6, 2018 11:58 AM in response to hvbris

I'm in touch with AppleSupport, last night I was pleased to disable bluetooth as well as wifi while my MacBook sleeps with display closed on battery. This morning the battery drain was at 2%. Had my last call a few minutes ago, now I should let my MacBook sleep over night with only wifi disabled and report the results tomorrow back to AppleSupport.


Well... not the answer I liked, but they are really trying to get a fix. I'll keep you updated. For me, going back to High Sierra isn't an adequate solution, but that's only my opinion. Of course I tried, smc & pram reset, clean install, update to 10.14.1 etc. etc. - none of steps really fixed the battery draining. After I updated to 10.14.1 it was gone for about 1-2 days.


cheers,

Ole

Nov 8, 2018 12:36 AM in response to hvbris

I've got a MacBook Pro (Retina, 13-inch, Early 2015), which has generally been fine. Upgraded to Mojave 10.14 without issues (as far as I can tell). However since upgrading to 10.14.1, my Mac is dead every morning (flat battery). Last night, I left the MBP in its protective sleeve, and this morning the bag was quite warm. The Mac's battery had completely drained overnight (from perhaps 70-80% charge). The day before, it I left it (closed) on my desk (at perhaps 30% charge), and the following morning there wasn't sufficient charge to run.

I think there is definitely a problem with 10.14.1. However, 10.14.0 seemed ok before...

Nov 9, 2018 1:23 AM in response to iekoms

I noticed this behavior to me happens to me if the laptop is 100%.



I noticed this behavior to me happens to me if the laptop is 100%.


I also noticed that when I hibernate the laptop below 100% like 80% when it reactivates the same after a few hours it has already consumed a good amount of battery, 10 to 20%.

Nov 9, 2018 10:08 AM in response to hvbris

I'm having the same issue on my MBP 2017. Went home last night with my laptop in my carrying case at 100%. Never touched it, as always, Got into work and it wouldn't awake. Hmm, thought it may have crashed somehow. Nope. Needed a hard restart to boot. Apple how do you miss this? Got into work and after finally booting up, it said 11% and didn't understand. About an hour later at 19%.


But here's the big question.... why now? Why am I just experiencing this now after updating to 10.14.1 six days ago?

Nov 9, 2018 6:30 PM in response to hvbris

Same here... it started recently though. Had updated to Mojave 2 weeks back I think and everything was working fine but two days back I noticed that my Mac was drained even though I hadn't used it at all. Fully charged the battery yesterday night and checked for the battery usage the first thing in the morning to realise that 21% was drained while my Mac was sleeping. Battery has been draining quite fast since then as well 15% in 48 minutes as against my old depletion rate of approx. 15% in 65-70 minutes. It can't be 10.14.1 because I installed it yesterday evening while I had already noticed the problem a few hours before that.

Nov 10, 2018 3:24 AM in response to JohnnyISU10

MB Air -2015 and I've also noticed a drastic drain on the battery, especially when it's supposed to be in sleep mode. I used to be able to let it sleep for days and not worry about the battery draining below 10%. Now, I can't let it go overnight without it draining. Does anyone know if it's possible to revert back to Sierra until Apple fixes Mojave?

Nov 10, 2018 8:07 AM in response to hvbris

I have the battery problem since I upgraded to Mojave. Battery is decreasing a lot faster than using previous version. Even I see more heat on the bottom. I did not see the blur images at all. I did see the battery drain on sleep. But what worries me is the battery drain when using it. Did anyone get a good response from Apple? By good I mean something like "Yes we are working on it and a new fix release is expected by xxxxxx". Going back to High Sierra does not look like a professional answer to me. Thanks

macOS Mojave battery drain

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