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Battery life dropped considerably on Mountain Lion.

521049 Views 3,396 Replies Latest reply: Oct 28, 2013 5:38 AM by CT RSS Branched to a new discussion.
  • Csound1 Level 7 Level 7 (32,375 points)

    crossbytje wrote:

     

    Off course it is right, it is just reading the amperages from your battery. But it might very well be the case that the first 50% drains quicker than the last 50%!

    Yes it merely describes how much of the batterys charge has been used, it however tells little about how much time is left. Time left relies on 2 factors, battery charge available, and load on the battery, which changes as you use the computer.

     

    There is only one way to know how long your battery will last and that is to run untl flat. Even then you won't know if it will be the same the next time you do it.

  • Nickholl Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 24, 2012 8:32 AM (in response to Csound1)

    Guys - I can't seem to get the smc reset working on my retina MacBook :(. I'm pressing the keys that I should be but the MagSafe isn't changing colour :(.   (Left hand shift,Ctrl and alt buttons + power)

     

    Anybody have any ideas?

     

    I just did a time machine restore and am back to 3.4hrs :( the amount of time I'm spending on getting this fixed is ridiculous :(

  • Nickholl Level 1 Level 1 (0 points)

    i think the ironic thing about this whole problem is that Ive probably used and drained the battery MORE trying to fix and investigate this issue then I normall would in a looong time

  • avinashmkumar Level 1 Level 1 (0 points)

    I've been following this thread since the day i bought my MPB Late 2012 edition, just to keep myself updated as to whether everything is alright with ML battery drain issues and if Apple has a solution to it. In the meanwhile, something else concerns me. My 22 weeks old MBP 2.5ghz running Lion 10.7.4 shows 91% battery health and a temperature within the range 30-31 c. I would like to know if these numbers are good enough for an MBP that is mainly used for surfing, document preps and some image editing works. Thanks!

  • lovejam2012 Level 1 Level 1 (0 points)

    somehow, my MBPr 15 run insanely efficent today with the battery, and I do notice that the body and the air outlet area is also really really cool.

     

    activities I have done today , PHP programming, downloading, play songs, web browsing ( safari only), database programming and its tools. local server software running at the background ...etc

     

    actually more work than before, but I don't see the battery problem today, am I getting lucky or just a random luck and will start all over again ?

     

    I do have all of my softwares up to date, including system itself.

     

     

    anyone have similar experiences after update ? 

  • Jimmy Kats Level 1 Level 1 (10 points)
    Currently Being Moderated
    Nov 30, 2012 10:24 PM (in response to KKphys)

    What overall changes have you seen since the upgrade? Less CPU usage? Any background apps that have disappeared?

  • eduseiden Level 1 Level 1 (0 points)

    Since I upgraded to Mountain Lion (MBP 13 2.7 i7), the battery drains more than it did in Snow Leopard. Something like 10% in 8 hours, that in my point of view is a complete failure in this version of OS.

     

    Hope Apple fixes this asap ... I don't want to believe that the golden years of Apple have gone.

  • jbizzel14 Level 1 Level 1 (0 points)

    dont even go there about this problem, i went into an apple store 2 months ago about the battery problem, they didnt even have mountain lion installed on the shop server, so they couldnt help me in the matter "how convenient". and still no fix, well apple looks like your becoming microsoft, more worried about rolling out an iphone every year or less than supporting your products when MAJOR issues arise in your programming :/

  • Csound1 Level 7 Level 7 (32,375 points)

    eduseiden wrote:

     

    Since I upgraded to Mountain Lion (MBP 13 2.7 i7), the battery drains more than it did in Snow Leopard. Something like 10% in 8 hours,

    10% of 8 hours = 80 hours, how long are you expecting?

  • jbizzel14 Level 1 Level 1 (0 points)

    i get a maximum of 4 hours out of my macbook retina. 4 HOURS, they imporved some models of macbook but totally screwed other versions up. btw i surf the net and use google sketchup on mine, not exactly tasking. I got down atleast 20 percent an hour :/

  • Csound1 Level 7 Level 7 (32,375 points)

    Sorry, I don't have a Retina so can't test.

  • eduseiden Level 1 Level 1 (0 points)

    I meant about sleeping time. With SL in the same computer, I would say that power drain, while sleeping, was almost zero ! I wrote almost, not zero.

    After upgrading to ML, it drains such a percentage I described. 80 hours, or about 3 days, is not acceptable to drain the full battery with the OS in sleeping mode.

  • Csound1 Level 7 Level 7 (32,375 points)

    eduseiden wrote:

     

    I meant about sleeping time. With SL in the same computer, I would say that power drain, while sleeping, was almost zero ! I wrote almost, not zero.

    After upgrading to ML, it drains such a percentage I described. 80 hours, or about 3 days, is not acceptable to drain the full battery with the OS in sleeping mode.

    If the Mac is sleeping it is using power, if it is using power the battery will eventually run out, how many days do you think it should run while asleep?

  • eduseiden Level 1 Level 1 (0 points)

    I have never done this test, but for me it is strange to drain 10% in just one night .... at least in my opinion we have something to be fixed in this latest OS, and this is not something bad for Apple. It happens to deliver something not so perfect and I hope the software engineers be aware of this problem. Many users are complaining about this and I really noticed this issue after upgrading.

  • Csound1 Level 7 Level 7 (32,375 points)

    Sad to say I have had no battery life issues at all, not with Lion and not with Mountain Lion, so I am not complaining.

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