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Battery life dropped considerably on Mountain Lion.

520599 Views 3,396 Replies Latest reply: Oct 28, 2013 5:38 AM by CT RSS Branched to a new discussion.
  • saber540 Calculating status...

    Ok,

     

    So I updated my MBP to 10.8.3 as well, as soon as the system powered up from the update, I chose to shut my MBP do a Pram reset and rerstarted my MBP, I litteraly watched my battery go from 97% to 77 % in a matter of

    in a matter of 12 minutes, usage?  none, all apps closed except for whatever is running in the backround.

    I had my MBP checked at the genius bar and my battery is plenty healthy, hardware tested negative for any issues.  I don't know what to try or look for anymore, although unrelated the same issues are happening with latest updates for iPhone iOS 6.1.3 as well as my Ipad, mu frustration with Apple has reached its threshhold.

    I don't see anty reason to support a Corporation that does nothing when people are spending their hard earned

    money in this economy.  Although Microsoft has their issues maybe it's time to see what they are offering,

    Sorry to rant but it is human frustration.

     

    Cheers Good luck finding a solution for this careless oversigt by Apple.

  • ScratchSF Level 1 Level 1 (60 points)
    Currently Being Moderated
    Mar 28, 2013 5:42 PM (in response to saber540)

    @Saber540, can you tell us what you power profile is in terms of current (mA) and power (watts).  If you have voltage, that would be good to capture too.  If you're dropping from 97 to 77 in 12 minutes, that isn't right.  Assuming you haven't taken it to an Apple store yet, any additional metrics you can post would be great.

     

    Becuase it seems to fix machines for some and break machines for others, I lean toward a configuration problem.  It isn't firmware (and least not directly) nor is it battery (at least not directly) or you would have experienced the problem under 10.8.2, which is where, I presume, you upgraded from.

     

    Also, the first boot could have a ton of stuff going on in the background.  Are you still seeing the same drop now?

  • ScratchSF Level 1 Level 1 (60 points)
    Currently Being Moderated
    Mar 28, 2013 5:52 PM (in response to chris_gr)

    @Chris_gr,  You made a jump from SL to ML.  Wondering if some of the new features are part of the issue.  Can you turn off iCloud, Bluetooth, and Notifications and see what happens?

     

    Yes, if you can post your power profile, that would be great (mA, mV, and W).  You can get it through System Information, which you can do via the Apple Symbol -> About This Mac... -> More Info -> System Report -> Hardware -> Power.  Or just look for System Information in the Utilities folder within the Application folder in the Finder.

  • chris_gr Calculating status...

    @ScratchSF

     

    thanks for the reply.

    Is there any app to measure realtime the energy used per application ? (or sth?).

     

    I am now 95% - 3:35 remaining   - 92 percent of battery life in 225 Cycles (thanks to Apple!)

     

    I am only using MS Word, Safari for browsing.

    No flash installed, java yes but not using.

    No dropbox or Skype (just to test if anything changes)

    NO iCloud, Noteification centre or bluetooth (NEVER USED THEM)

     

    Lately, I use only MS Office and Safari for web browsing, no videos or music, no flash

      Model Name: MacBook Air

      Model Identifier: MacBookAir3,2

      Processor Name: Intel Core 2 Duo

      Processor Speed: 1.86 GHz

     

     

    Battery Information:

      Model Information:

      Serial Number:

      Manufacturer: SMP

      Device Name: bq20z451

      Pack Lot Code: 0

      PCB Lot Code: 0

      Firmware Version: 301

      Hardware Revision: 000a

      Cell Revision: 162

      Charge Information:

      Charge Remaining (mAh): 6095

      Fully Charged: Yes

      Charging: No

      Full Charge Capacity (mAh): 6153

      Health Information:

      Cycle Count: 225

      Condition: Normal

      Battery Installed: Yes

      Amperage (mA): -5

      Voltage (mV): 8339

  • chris_gr Level 1 Level 1 (0 points)
    Currently Being Moderated
    Mar 29, 2013 8:27 AM (in response to dikaf)

    @dikaf

     

    >While checking the battery usage, I noticed that when closing Skype (while idling), for example, the >battery usage fell from around 1200 to about 900mAh.

    Maybe a naive question: how can I get the mAh used by an application (or even aggregate by all my running apps) ?

  • Csound1 Level 7 Level 7 (32,320 points)
    Currently Being Moderated
    Mar 29, 2013 8:49 AM (in response to chris_gr)

    Contact the suppliers of the apps you need answers for.

  • dikaf Level 1 Level 1 (0 points)
    Currently Being Moderated
    Mar 29, 2013 10:52 AM (in response to chris_gr)

    chris_gr,

     

    I'm sorry for not clearing this out and I haven't replied already to your inquiry, because I didn't know the answer. As I can recall I had looked in the past, for quite some time, to find an app to do what you also ask for, without any positive outcome. In my case, I just had the "Battery Health" application on and I was toggling stuff on and off and watching the current overall energy use (in mAh) of the system. By the way, I don't know much to judge precisely and I'm only making assumptions. About Skype in particular, the fact is that it doesn't use a lot of CPU in idle mode (otherwise it's greedy), but I thought there was a significant difference in energy consumption by having it on or off. I have tried also ooVoo, but it seemed to be more demanding in idle mode. With some better video/sound quality though during calls. Anyway…

     

    CSound1,

     

    I believe that what you suggest doesn't seems practical enough, since what chris_gr asks for is to locate which applications are using more power and not that he's suspicious of one or two and he needs to know if their consumption is normal.

     

    I once used a terminal command, which, from what I understand, displays somehow how often a process writes on the hard disk. I tried to find out this way for processes repeating that very often and indirectly consider them responsible for high energy consumption. The command is:

    sudo fs_usage

    and since it runs constantly you can stop it by pressing Ctrl+C. Other than that, I know zero regarding the exact usability of the command.

  • Csound1 Level 7 Level 7 (32,320 points)
    Currently Being Moderated
    Mar 29, 2013 11:17 AM (in response to dikaf)

    dikaf wrote:

     

    CSound1,

     

    I believe that what you suggest doesn't seems practical enough, since what chris_gr asks for is to locate which applications are using more power and not that he's suspicious of one or two and he needs to know if their consumption is normal.

     

    I once used a terminal command, which, from what I understand, displays somehow how often a process writes on the hard disk. I tried to find out this way for processes repeating that very often and indirectly consider them responsible for high energy consumption. The command is:

    sudo fs_usage

    and since it runs constantly you can stop it by pressing Ctrl+C. Other than that, I know zero regarding the exact usability of the command.

    And it does not tell you the power consumed by individual processes either, which is what is wanted here.

  • dikaf Level 1 Level 1 (0 points)
    Currently Being Moderated
    Mar 29, 2013 11:20 AM (in response to Csound1)

    Fully agreed there. I just shared this experience which I recalled from the times looking for the kind of application in discussion..

  • Csound1 Level 7 Level 7 (32,320 points)
    Currently Being Moderated
    Mar 29, 2013 12:46 PM (in response to dikaf)

    Get a Kill-a-watt and use it to monitor power consumption as you stop and start various apps.

  • brianx87 Level 1 Level 1 (10 points)

    (UPDATE)  So something unusual has happened after I decided to downgrade to 10.6.8 and this being the second time since the 10.8.3 release. Initially the 8.3 release worsened by battery life so I did a downgrade to 6.8 to see what the difference would be like and it was a significantly expected increase. So I let my macbook air 3,1 sit for a few hours on battery and it ran smoothly with out any signs of battery deterioration then I upgraded to 8.2 again with which I received the expected loss of battery life of around 40-50% which quite frankly I'm fed up with after two updates and months of waiting!

     

    So again I decided to downgrade to 6.8 as a means to an end and sit comfortably with a smoothly operating machine but I gave the 8.3 update another go just to see what difference it could make if any but this time it was worse than it previously was. The service battery notification in the battery status icon had reappeared as it did with 8.1 and battery life had dropped to around 30% which after an hour of use and multiple SMC and PRAM resets there was no improvement. So back to Snow Leopard.

     

    Now previously when I downgraded I found no problems with the battery after a few hours of use and no erratic time or percentage outputs in the battery icon but on this occasion the same cannot be said. I've downgraded to 6.8 and at 100% battery charge the readout is 2 hours which can move up and down slightly even though I'm only using safari via an Ethernet cable.

     

    What should I do now?

     

    Just a note to say that 8.3 is now an impossibility for me as the idiots at apple have decided that my macbook is not allowed to run windows 8 as the latest version of bootcamp renders it impossible to install it so I'm really at a loss about what to do.

  • Mahtey Calculating status...

    I'm new here, from the UK. Battery life on Mountain Lion is a complete joke. I have an early 2011 17" 2.2 i7 with a Samsung 830 256GB and the original 750GB in a caddy. The battery life is appalling. I'm about to go back to Lion. Will report back.

  • ScratchSF Level 1 Level 1 (60 points)
    Currently Being Moderated
    Mar 29, 2013 10:24 PM (in response to chris_gr)

    chris_gr wrote:

     

    @dikaf

     

    >While checking the battery usage, I noticed that when closing Skype (while idling), for example, the >battery usage fell from around 1200 to about 900mAh.

    Maybe a naive question: how can I get the mAh used by an application (or even aggregate by all my running apps) ?


    Amperage (mA): -5

    Voltage (mV): 8339


     

    I don't know of a tool that will do this for you.  But you can do exactly what you've done by running an application, capturing the total current, and then terminating the applications and seeing how far it drops.  Not an exact science, but the difference will give you a feeling of how much current each app draws.   But don't try to sum various apps in this way, I doubt the sums will total properly.

     

    Also, in your power profile, can you run it again.  Doesn't look like you refreshed it right after unplugging it from the wall.  I'd expect to see the current around the -1200 or -900 (based on this post) and not -5.  That said, what I find interesting is your voltage reading of a 8.3V.   To the best of my knowledge, LiPo batteries have a voltage range they need to stay within per cell, which is 3V (low) and 4.2V (high).  The LiPo, I have assumed are 3 cells which gives us arange of 9V (low) to 12.6 (high).  Your voltage of 8.3 falls below the low.  But since I know the -5 mA is wrong, I'm going to assume that this one needs to be refreshed too.

  • ScratchSF Level 1 Level 1 (60 points)
    Currently Being Moderated
    Mar 29, 2013 10:41 PM (in response to brianx87)

    @brianx87 - try clearing out all of your cache files.  I've done this using Onyx, but there are other ways to do this. 

     

    I'm grabbing at air here, but what are your output MIDI settings?  Mine are 44100 Hz, 2-Channel 24 Bit.  You can find this setting under Finder -> Applications -> Utilities -> Audio MIDI Setup -> Built-In Output.

     

    The reason I ask is that one one of the earlier updates to ML, it changed my settings to something my hardware couldn't handle.  I don't remember the Hz, but I do remember it was 32-bit, not 24.  Now, on 10.8.3, 32-bit isn't even an option.  Like I said, I could be grabbing at air, but take a look and see what your machine says and consider making it something lower as a test.  44100 Hz is good, but try 24-bit or 16-bit and see what happens - if that improves battery life at all.

     

    P.S.  Also set your Input setting to be the same.

  • scartacus Calculating status...
    Currently Being Moderated
    Mar 29, 2013 11:36 PM (in response to ScratchSF)

    These are the facts for me.

     

    2010 13 inch Macbook Pro.

     

    Last October, after 2.5 years on Snow Leopard I upgraded to Mountain Lion.

     

    At the time of switchover, my battery was 87% after 1200 cycles.

     

    After two months of mountain lion, the battery health dropped to 80%...and then promptly died.

     

    I bought a new battery in Jan 2013, at the cost of £100.

     

    After three months of use on Mountain Lion, that battery is now showing only 87% health. on 89 cycles

     

    Mountain Lion is a battery killer.

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