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  • 2,535. Re: Battery life dropped considerably on Mountain Lion.
    armanditoh Level 1 Level 1 (0 points)

    Doing that right now. Update after

     

    UPDATE: Okay, battery dropped to 88% very fast.
    It‘s now charging, yay.

     

    Now my problem is... the battery dropping too fast.

  • 2,536. Re: Battery life dropped considerably on Mountain Lion.
    armanditoh Level 1 Level 1 (0 points)

    Oh, and although it took so little time to drop that ammount, it says it‘ll take 50min untill full again. Frustrating.

     

    (And the forums wont let me edit my last post again, don‘t know why)

  • 2,537. Re: Battery life dropped considerably on Mountain Lion.
    Nonjo Level 1 Level 1 (0 points)

    I too have been experiencing poor battery life since updating to Mountain Lion, at least in comparison to Lion. My Macbook Air is about one year old (it's a mid-2011 purchased in August of 2011). Battery life is in the 3-4 hour range. The percentage numbers drop much more rapidly than before, and the time remaining seems to fluctuate. The battery rarely if ever reads a 100% charge. Battery health reports that the battery maintains about 88% of its original capacity. I tried an SMC reset and things improved initially, but the results haven't been consistent. I've been using my Mac lightly for about the last half hour and the battery has lost about 8% of its charge.

  • 2,538. Re: Battery life dropped considerably on Mountain Lion.
    Sulaiman.K Level 1 Level 1 (10 points)

    richsadams,

     

    I have done the one you said doing clean install and trying sort of SMC and PRAM resets and it has gotten little bit improved. When the battery is at 93% the remaining shows 6:36 and i used for 26 minutes, What do you think of it? is it improved?

     

    Please let me know. Looking forward on your respond, Thanks bud.

  • 2,539. Re: Battery life dropped considerably on Mountain Lion.
    Csound1 Level 8 Level 8 (35,345 points)

    Sulaiman.K wrote:

     

    richsadams,

     

    I have done the one you said doing clean install and trying sort of SMC and PRAM resets and it has gotten little bit improved. When the battery is at 93% the remaining shows 6:36 and i used for 26 minutes, What do you think of it? is it improved?

     

    Please let me know. Looking forward on your respond, Thanks bud.

    And it will be different the next time you try, it is an estimate, run your battery to empty if you actually care to know how long it lasts.!

  • 2,540. Re: Battery life dropped considerably on Mountain Lion.
    richsadams Level 1 Level 1 (70 points)

    Sulaiman.K wrote:

     

    richsadams,

     

    I have done the one you said doing clean install and trying sort of SMC and PRAM resets and it has gotten little bit improved. When the battery is at 93% the remaining shows 6:36 and i used for 26 minutes, What do you think of it? is it improved?

     

    Please let me know. Looking forward on your respond, Thanks bud.

     

    IIRC you have a 2011 MacBook Pro.  Based on the specs it should give you around 7 hours of "normal" use so that sounds about right. 

     

    However as Csound1 said, you can do this same "experiment" any number of times and see slightly different results.  Of course everythnig depends on what you're doing, what your MacBook is doing in the background and where it is in the charge cycle.  You can rarely if ever replicate things exactly.  It is indeed an estimate and as I mentioned earlier, if you watch it every minute you'll drive yourself crazy.   

     

    If you really want to track everything and get some sort of "average" you could install MiniBatteryLogger.  And as Csound1 suggests...ignore the estimated time and keep track of the actual time you can use your MacBook.  Mind you though, OCD can set in pretty easily.

     

    My MBA is on it's fifth charging cycle since a clean install of 10.8.2 and it's settling in nicely.  The battery life continues to be a little above spec (still not quite as good as w/Lion, but to be expected with a new OS sometimes) and the readings have stopped swinging as wildly as they once were.  Battery health has returned to its pre-ML level and is also steady. 

     

    So give it some time, follow Apple's battery maintenance guidelines and see how it goes for a while.

  • 2,541. Re: Battery life dropped considerably on Mountain Lion.
    Sulaiman.K Level 1 Level 1 (10 points)

    IIRC you have a 2011 MacBook Pro.  Based on the specs it should give you around 7 hours of "normal" use so that sounds about right.

    After doing everything including clean install, resets everything and now the battery life isn't dropping much faster and it only drops 5% every 9 minutes (previously 1% per minute) of use.

     

    If you really want to track everything and get some sort of "average" you could installMiniBatteryLogger.  And as Csound1 suggests...ignore the estimated time and keep track of the actual time you can use your MacBook.  Mind you though, OCD can set in pretty easily.

    Yes i'm using that and i already installed

     

    coconutBattery

    BatteryHealth

    MiniBatteryLogger (It's the best app! easier to monitor the battery life.)

     

    My MBA is on it's fifth charging cycle since a clean install of 10.8.2 and it's settling in nicely.  The battery life continues to be a little above spec (still not quite as good as w/Lion, but to be expected with a new OS sometimes) and the readings have stopped swinging as wildly as they once were.  Battery health has returned to its pre-ML level and is also steady.

    Sounds like there is several issue that's causing the battery and there is nothing to do with it (You can improve by doing SMC or PRAM reset but you cannot use regularly like on Lion), Only the way that's Apple has to fix the issue and it's not the problem with the computer it's the problem with the OS i can confirm it.

     

    Even when i went to the Apple Store i saw a MacBook Pro 13" that has installed Mountain Lion and i have been in the store for 2 hours and been testing that MBP but it seems their Battery life is also draining like the users in this thread. In the store the staff member (Not Genius Bar) saying that the battery is draining because the wifi is turned on and i don't understand how come the if the wifi is turned on and the battery drains :/ at least after doing the testing i went to the genius bar and still awaiting to hear from them and i'll see how it goes.

     

    I will update you when i hear any news from the Genius Bar after doing few tests for the MBP 13" early 2011.

     

    if you watch it every minute you'll drive yourself crazy.

    I'm already driving it crazy

    And it will be different the next time you try, it is an estimate, run your battery to empty if you actually care to know how long it lasts.!

    I know mate. This i'm testing after the empty battery and charged fully and i wanted to see how it goes but it has not improved much just a bit this sounds like the OS has caused the battery and there is nothing to do only Apple could fix this case.

     

    EDIT: 48% 2:32 remaining and 2 hours and 30 minutes real-time use (according to MiniBatteryLogger timer).

  • 2,542. Re: Battery life dropped considerably on Mountain Lion.
    ScratchSF Level 1 Level 1 (60 points)

    corsa wrote:

     

    ScratchSF, all updates were from the App Store.

     

    After resetting the SMC yesterday, I got just over 5 hours on a full charge on the first cycle, so better than I was seeing with 10.8.2 before the reset, but not back up to what I was seeing with 10.8.0 or 10.8.1.

     

    I'll give it a few more cycles before making any judgements.

    Corsa,  That's good news.

     

    If it's working and you're happy, you might want to leave well-enough along.  But, if you're up for it, there are a few things I'd like to suggest and see if that helps at all, espeically if you've stablized at just over 5 hours:

     

    • Perform a PRAM reset in addition to the SMC reset (espeically if you are having keyboard or trackpad issues (which is reported in a different thread on this site).  Here's how to reset  the PRAM: http://support.apple.com/kb/HT1379
    • If you have iCloud signed in, try it with it signed-out.
    • If you have bluetooth enabled, try it with it disabled.
  • 2,543. Re: Battery life dropped considerably on Mountain Lion.
    ScratchSF Level 1 Level 1 (60 points)

    richsadams wrote:

     

    ScratchSF wrote:

     

    richsadams, I experienced the problem early one with 10.8.0 and it improved with 10.8.1.  With 10.8.2 it fell between 10.8.0 and 10.8.1 in terms of battery life and behavior; until I re-downloaded it using the Combo version and performed yet another SMC.  Now all seems about where it was previously with Lion, perhaps better (as I'm typing this message, my batter health is indicating between 6 and 7 hours remaining at 98%).

     

    I do not have PowerNap and did not receive a firmware update with ML.  So, while firmware may certainly be one of the many things that Apple needs to chase down, it isn't the only thing at play here.

     

    Sweet...glad things are getting back to normal for now at least.

    Thanks, richsadams!

     

    I think there are several things going on here; some of which they have addressed via the 10.8.2 update.  But it sounds like there's some sort of firmware interaction issue at play here as well.  I'd like to believe that it was a configuation file and/or setting issue, but since people performing a clean install are having the problem and they were OK under SL or Lion, it points to something else; e.g., firmware.  It certainly could be that as people also complained about battery issues with Lion and there were as firmware update made there too.

  • 2,544. Re: Battery life dropped considerably on Mountain Lion.
    ScratchSF Level 1 Level 1 (60 points)

    Beisarius wrote:

     

    Hey Scratch,

     

    Indeed, I am quite sure that not all Macbook received a firmware update. Some older models did not. Equally, had Apple deployed firmware update for all units, no doubt these would have been archived right away by model, on the SMC firmware page.

     

    It means that on older macbooks ML does not run the same way as on newer architectures. greghei recently asked how woudl I know what. After 6-7 recent installs or SL L ML, I noticed a higher consumption on older units.

    Hi Beisarius,  This one is really hard to troubleshoot with having access to all of the equipment at Apple's disposal.  Now that 10.8.2 is out, I'm wondering if people on the PowerNap SMC firmware are experiencing the problems more often than the non PowerNap versions.

     

    By higher consumption, are you refering to power (e.g., amperage or wattage)?  That would make sense if the newer h/w is more efficient.

  • 2,545. Re: Battery life dropped considerably on Mountain Lion.
    richsadams Level 1 Level 1 (70 points)

    Sounds good.  Keep us posted!

  • 2,546. Re: Battery life dropped considerably on Mountain Lion.
    richsadams Level 1 Level 1 (70 points)

    ScratchSF wrote:

     

    Now that 10.8.2 is out, I'm wondering if people on the PowerNap SMC firmware are experiencing the problems more often than the non PowerNap versions.

     

    Actually my MBA improved to the point of being "normal" after the SMC update that added Power Nap.

     

    The fact that your MBP didn't receive an SMC update and is still having problems somewhat reinforces my WAG that this still an SMC/10.8.x/component issue. 

  • 2,547. Re: Battery life dropped considerably on Mountain Lion.
    TroubleTio  Level 1 Level 1 (0 points)

    Ok,

     

    Guys I've been struggling for a long time with this issue and I figure out something that could help some of you.

     

    There's a process that consumes a lot of CPU (above 100) its "MASSIVE STORAGE", well if you know if it keep processing things that you're not using it will surely drain your battery fast!.

     

    Just finish that process and you are goin to notice a BIG difference on battery performance

     

     

    PLEASE LET ME KNOW HOW IT GOES FOR YOU GUYS

  • 2,548. Re: Battery life dropped considerably on Mountain Lion.
    richsadams Level 1 Level 1 (70 points)

    TroubleTio wrote:

     

    Ok,

     

    Guys I've been struggling for a long time with this issue and I figure out something that could help some of you.

     

    There's a process that consumes a lot of CPU (above 100) its "MASSIVE STORAGE", well if you know if it keep processing things that you're not using it will surely drain your battery fast!.

     

    Just finish that process and you are goin to notice a BIG difference on battery performance

     

     

    PLEASE LET ME KNOW HOW IT GOES FOR YOU GUYS

     

    Haven't seen that in a while.  Mass Storage is a controller process...generally initiated for external drives (HDD, SSD, USB) although it could be generated by another device like a cell phone, etc.  Virtual machine software like VMWare or Parallels can cause problems like that as well. 

     

    Although it's a problem for your machine, the process hanging is not new by any means and it's not the problem we're discussing here.  (Wish it were that simple.)

     

    If it's hanging odds are that if you disconnect any external devices and reboot your MacBook you won't see the process running any longer.  You might try booting up in Safe Mode to see if it stops as well. 

     

    If it continues to run and/or continues to hang there may be something wrong internally so you'll need to either work through it or take it in to have a Genius or authorized repair shop take a look at it.

     

    You could go ahead and post a screenshot of Activity Monitor (All Processes) so we can see the PID and User if you'd like.

  • 2,549. Re: Battery life dropped considerably on Mountain Lion.
    Beisarius Level 1 Level 1 (0 points)

    Hey Scratch,

     

    Exactly, was referring to power consumption. As I listed previously, 2012 MBA, without the issue, noticed an average of -800mAh drain. With an issue, -1200.

     

    On older nits, ML was -2500, Lion 2000 and SL -1500-1700. A direct linear relationship. Yes the newer architecture is more efficient. So a 6000 mAh battery on a newer architecture should give more time than the same on an older unit. This is on units that do not seem affected. An older unit, if affected will drain much more.

     

    Of course, someone with a 2012 MBP, 7900 mAh burning in 2.5 hrs, is in fact burning a whopping 2900 mAh. In other words, their GPU is under load.