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Battery life dropped considerably on Mountain Lion.

521350 Views 3,396 Replies Latest reply: Oct 28, 2013 5:38 AM by CT RSS Branched to a new discussion.
  • pedrogarcia Level 1 Level 1 (0 points)

    Hi everybody,

     

    Since my last participation on this topic I have been reading a lot about this battery drain. I've also contacted apple support here in Portugal and they denied that this could be caused by the new OS and told me to do a clean install, an option that I didn't want to do it because I read about it here and didn't work. Despite that I did it yesterday and the result was even worse. My macbook pro from late 2011 had 9 hours of battery with Lion, then with the upgrade 6,50h and now with a clean install 4,50 hours. After this result I contacted again Apple support and they told to go to the apple service near me. Today I went there and my battery was tested and the result was considered normal. The technician told me that some are being replaced but only if the result is bad. As I leave in Europe my warranty is now for 2 years, so if the battery fails during this period it will be replaced. The technician also told me that this is surely caused by the new OS and that Apple is fix this sooner or later and that mountain lion needs far more hardware resources than Lion so it's fair that the battery consumption is greater. That's my story.

  • richsadams Level 1 Level 1 (70 points)

    pedrogarcia wrote:

     

    Hi everybody,

     

    Since my last participation on this topic I have been reading a lot about this battery drain. I've also contacted apple support here in Portugal and they denied that this could be caused by the new OS and told me to do a clean install, an option that I didn't want to do it because I read about it here and didn't work. Despite that I did it yesterday and the result was even worse. My macbook pro from late 2011 had 9 hours of battery with Lion, then with the upgrade 6,50h and now with a clean install 4,50 hours. After this result I contacted again Apple support and they told to go to the apple service near me. Today I went there and my battery was tested and the result was considered normal. The technician told me that some are being replaced but only if the result is bad. As I leave in Europe my warranty is now for 2 years, so if the battery fails during this period it will be replaced. The technician also told me that this is surely caused by the new OS and that Apple is fix this sooner or later and that mountain lion needs far more hardware resources than Lion so it's fair that the battery consumption is greater. That's my story.

     

    Did you try resetting the SMC?  Mine needed that after a clean install and is performing normally now.

     

    http://support.apple.com/kb/HT3964

     

    Hope that helps and best of luck!

  • pedrogarcia Level 1 Level 1 (0 points)

    I tried that previously, Thanks for the tip!

  • richsadams Level 1 Level 1 (70 points)

    pedrogarcia wrote:

     

    I tried that previously, Thanks for the tip!

     

    So you're saying that you reset the SMC after the last clean install correct?

     

    It took mine about three to five charge cycles to really settle in and start performing "normally".  It's still not as good as it was with Lion, but I guess that's to be expected with a new OS and it actually does exceed Apple's specs a little so I can't complain too much.

     

    Best of luck!

  • Tykestro Calculating status...

    I've scoured the web and attempted all options re the shockingly poor battery life of the ML MacBook Air.  I am properly suffering from post purchase dissonance and considering my options for returning the product. Surely by now Apple should have offered a downloadable solution to this problem?  How did the launch take place when such a blatant flaw is evident. Why have Apple not publicly acknowledged this latent defect and issed a statement towards a fix? I genuinely feel I've been done over and so wish I'd invested in something else. For now this is a bum deal and I hope for a swift resolution...

  • richsadams Level 1 Level 1 (70 points)
    Currently Being Moderated
    Oct 11, 2012 4:25 PM (in response to Tykestro)

    Tykestro wrote:

     

    I've scoured the web and attempted all options re the shockingly poor battery life of the ML MacBook Air.  I am properly suffering from post purchase dissonance and considering my options for returning the product. Surely by now Apple should have offered a downloadable solution to this problem?  How did the launch take place when such a blatant flaw is evident. Why have Apple not publicly acknowledged this latent defect and issed a statement towards a fix? I genuinely feel I've been done over and so wish I'd invested in something else. For now this is a bum deal and I hope for a swift resolution...

     

    I feel your pain...or at least I did until mine was fixed.  The thing is, this is only affecting a very small (and getting smaller) number of MacBooks.  There are tens of millions of them in the wild and if this was truly an issue for a majority it would have been all over the press...and it's not.  So relatively few of us are experiencing this issue...but if it's affecting you it's a big deal for sure.

     

    Historically Apple has rarely ever "acknowledged" any issue.  Neither does Dell or Asus or Microsoft or...  Apple did contact me directly as well as a number of others here.  We ran diagnostics for them, answered questions and tried several things to correct it.  The only thing that helped me was a completely clean install of 10.8.2.  That helped others, but not everyone of course.

     

    Apple is still in touch and may still monitor this thread so I'm certain they're still working on it.  The fix for other MacBooks could be tomorrow or it could be two months from now...it's impossible to know.  Generally these sorts of things have always been resolved, but no guarantee that it will be as soon as we all hope.

     

    That said, if you've tried everything suggested and you're really unhappy and don't believe this will be fixed I'd go ahead and return it and buy something else.  Wish there was a better answer but I can't think of one at the moment.

  • Beisarius Level 1 Level 1 (0 points)

    Benn absent a while, very busy....

     

    Richsadams says the same thing I thought, that maybe a clean install fixes it and, if not, it is just bad luck. Speaking of which, YES. I got my 3d Macbook Air. DEFECTIVE. I thought I was imagining things, the image was a bit too grey. Could not calibrate it. A contrast thing. Then noticed a ghosting effect at the bottom of the panel. Apple geniuses identified it immediately: defective LCD panel. So, first a trackpad. Then the battery issue. Third, the lcd. On this one battery seems about average, I would say 6 tops, not as good as my first MBA with the damaged trackpad. Hey, wait a minute! maybe it drained less as the trackpad demanded less juice!

     

    SO 3 defective MBAs in a row. I would buy the bad drain issue as bad luck just as easily. What are the odds one gets the things I did. And, it being custom ordered, it is a 2 week process back and forth...

     

    Am glad richsadams picked the flag and offered advice. At some point we were all repeating the same thing.

     

    So, curious. Anyone here replaced a battery and saw it solved?

  • richsadams Level 1 Level 1 (70 points)

    Hey Chris,

     

    Welcome back.  Yes, IIRC at least two or three here have had their batteries replaced and had their problem solved.  A couple of others have and it seemed to have no positive effect.

     

    Bummer about your LCD Panel (or is it LED panel now?)...glad they're replacing things as they should.

     

    Time marches on.

     

    Cheers!

  • Sulaiman.K Level 1 Level 1 (10 points)

    pedrogarcia wrote:

     

    Hi everybody,

     

    Since my last participation on this topic I have been reading a lot about this battery drain. I've also contacted apple support here in Portugal and they denied that this could be caused by the new OS and told me to do a clean install, an option that I didn't want to do it because I read about it here and didn't work. Despite that I did it yesterday and the result was even worse. My macbook pro from late 2011 had 9 hours of battery with Lion, then with the upgrade 6,50h and now with a clean install 4,50 hours. After this result I contacted again Apple support and they told to go to the apple service near me. Today I went there and my battery was tested and the result was considered normal. The technician told me that some are being replaced but only if the result is bad. As I leave in Europe my warranty is now for 2 years, so if the battery fails during this period it will be replaced. The technician also told me that this is surely caused by the new OS and that Apple is fix this sooner or later and that mountain lion needs far more hardware resources than Lion so it's fair that the battery consumption is greater. That's my story.

    I'm seeing your story is very similar to mine. The technicians told me to do the clean install at the first and than do the SMC resets things didn't work properly afterward following their steps, They've asked me to do the battery tests but the battery seems to be normal and only the service provider will replace if the battery gets in negative result.

     

    richsadams,

     

    The story is going very bad since from Monday they still didn't call me regarding the battery life, I think Apple might fix this issue soon as before the next update release to publicly. Let's wait and see what's happening in the next update version of Mountain Lion.

     

    Good Luck.

  • pedrogarcia Level 1 Level 1 (0 points)

    I tried the SMC reset before the clean install and didn't work. Now I did it afterwards and I'm still charging the battery. Let's wait for the results;)

  • SEPATech Calculating status...

    I recently upgraded from Lion to 10.8.2 on my out of warranty late 2008 15" MBP. I am noticing both the battery drain... especially overnight, about 30% last night in sleep mode... and a faint but noticeable flicker on the LCD panel at low illumination. Tried PRAM and SMC reset with no effect. Took to Apple store and the hardware checks out OK. The battery is surprisingly OK -- 95% health according to Coconut Battery. The machine is usable so I am not looking to sink a lot of money into the problem.

     

    What advantage does a clean erase and install offer over the ugrade I did? Is it likely to make enough of a difference to justify the time? If its going to be truly clean should I reinstall apps from scratch rather than from Time Machine?

     

    Is a new battery likely to make much improvement over my old but relatively healthy battery?

     

    Thanks in advance.

  • tcphoto1 Calculating status...
    Currently Being Moderated
    Oct 12, 2012 6:49 AM (in response to SEPATech)

    My Late 2000 MBP did not react well to the upgrade to ML. The battery life dropped to two hours and nothing worked until the 10.8.2 update. I did a clean install and then reset the SMC and it took a couple days until the battery settled at between 3 to 3.5 hours use.

  • richsadams Level 1 Level 1 (70 points)

    pedrogarcia wrote:

     

    I tried the SMC reset before the clean install and didn't work. Now I did it afterwards and I'm still charging the battery. Let's wait for the results;)

    Sounds good.  As mentioned, it took my MacBook about 3 to 5 charging cycles to really settle in and begin behaving normally.

     

    Keep us posted!

  • Nickholl Calculating status...

    I have a new retina mbp and am experiencing all of the above - never had more than 3.5hrs out of it (and never had anything other than mountain lion so dont know how that may effect it)

     

    If Apple dont fix this soon through an update - Im taking it to a store and asking for a new one that actually gives me the 7 hours that is advertised!

     

    Ive been there twice now - once to check the battery (which they said was fine). I then went back to book an appointment to change the battery (even though they said it was fine) the new guy told me that I shouldnt bother as Mountain lion wasnt perfect yet and I should wait until the next release.  (he told me apple have 2-3 update release cycles which clearly we all know isnt the case)

     

    If the next software update doesnt fix it - im asking for a new machine (as Im lucky enoough to have a machine that is within warranty)

     

    PS: People are saying that this is a minority issue - personally Im not sure it is. I work with loads of people that have macbooks and EVERY ONE has experienced battery problems since updating - its just they havent bothered talking to apple about it

  • iinviktus Calculating status...
    Currently Being Moderated
    Oct 12, 2012 9:47 AM (in response to Nickholl)

    I returned my Retina MBP for this issue as well as laggy scrolling/graphics.

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