Skip navigation

Battery life dropped considerably on Mountain Lion.

520238 Views 3,396 Replies Latest reply: Oct 28, 2013 5:38 AM by CT RSS Branched to a new discussion.
  • brainkilla Calculating status...
    Currently Being Moderated
    Mar 15, 2013 7:30 AM (in response to brianx87)

    If you sincerely believe this issue wouldn't have happened had Steve Jobs been running the company, then you are sadly mistaken. Issues such as this one, and worse - batteries exploding, Time Capsules dying immediately upon expiration of warranty - have happened before... yes, while Steve Jobs was alive. Not even then had they advertised their issues from the rooftops, though.

    Nothing in this world is perfect, including Apple. Apple simply makes much better products than the others, and in my experience tries to eventually fix the outstanding issues. You have every right to be dissatisfied and demand whatever remedy is available, but these things simply don't have any connection whatsoever with Steve Jobs being dead or alive.

  • Acid_Myst Level 1 Level 1 (0 points)

    I don't think you understand. When I loaded up Snow Leopard and Lion on the same computer my battery life increased all the way to 6 - 7 hours of normal usage. On Mountain Lion i get 2-3 hours of normal usage. I know it is not a problem with my battery because the numbers definitely show it. As you can see, I get a lot of battery life running snow leopard and lion and a lot less running mountain lion. Also, the improvements in mountain lion are completely useless. All they did was add some (in my opinion), the dumbest features found on the ipad/iphone, for example, notification center. I mean are you really that lazy to open up mail and check for yourself? really? The only reason I upgraded to mountain lion is that certain programs I have require mountain lion for updates that I desperately needed.

  • ScratchSF Level 1 Level 1 (60 points)

    Update on Battery LIfe Issue

    =======================

    I, like others here, spent a TON of time trying to troubleshoot this battery life issue, which started when I upgraded to 10.8.  For me, it improved slightly with 10.8.1 (because I think they addressed a fan issue) and degraded again with 10.8.2.  Unable to solve the problem, I reverted back to Lion, 10.7.5, which improved my battery life (as well as resolved two other 10.8 issues – music stuttering and screen blanking).  I have now upgraded to 10.8.3 and I am happy to report that my initial observations look promising.  Apple addressed the music problem (and even mentioned it in their release notes), and I do not seem to have the screen blanking problem.   At 95% remaining, I would say that battery life seems comporable to what I experienced with 10.7.5.  No improvement, but no decrease either. This is interesting because the current usage "seems" a bit lower under ML than under Lion.

     

    What I am really looking at is the current usage, which right now is around 860 mAh.  So, I can take that, divide it by my remaining battery capacity and come up with my own time estimate.  (For those you helped with some earlier testing, you'll know that this mAh, 800 to 900 value, is decent because some people reported numbers in the 1200 to 1400 mAh range.  So, Apple did fix a power consumption problem with this release, which does explain the longer battery life – at least in my case.

     

    I have not drained the battery sufficiently to know if the battery health issue – where by the capacity continued to decrease at a rapid rate – has been fixed.  I will only know that after I've cycled the battery a few times.

     

    This fix, along with the potential battery health fix (to be confirmed), "suggests" that the problem was in the software, configuration, and/or firmware and is not necessarily indicative of a defective battery. 

     

    Some people are still experiencing a problem.  It could be one of several things.   If your battery life did not increased, or decreased, with the 10.8.3 upgrade, please take a look at your batteries current maximum capacity in relationship to its original max capacity.  It is possible that if you remained on 10.8.x (prior to 10.8.3) that battery health was adversely affected.  Depending on the value, (e.g., <80% of original capacity) you might have to get that replaced.  If your battery health is still good, then check your average current (mAh) usage.  If that is still over 1000 mAh and you're not doing anything to tax the computer, then something is still wrong.   It could also mean that the there are multiple issues at play and that they all haven't been solved.  Or perhaps there is a piece of software on your machine that is causing the current draw.

     

    If you confirm that your battery capacity is still close to original capacity, then perhaps you can try to clean some cache files (e.g., using Oynx) and/or reinstalling 10.8.3 using the Combo file. http://support.apple.com/kb/DL1640

     

    Hope this helps

  • ScratchSF Level 1 Level 1 (60 points)
    Currently Being Moderated
    Mar 15, 2013 12:55 PM (in response to nelcab507)

    nelcab507 wrote:

     

    ...

    About 2 or 3 months ago I notice the message that my battery needs to be replaced,

    ...

     

    ... I now have a battery that only charges 962 mAH, which is less than an iPhone battery ...


    ...It began losing mAH from the original amount which is 6900 mAH almost daily and sometimes abructly (once I just turn it off and was in about 4200 mAH and when I turn it on was only 2900 mAH).

     

    TODAY,... I install the patch and the result... WAS THE SAME, my battery is only at 962 mAH.  ...

     

    nelcab507,  It looks like your battery health was adversely affected by staying on ML through its earlier versions.  As you noticed, it dropped from a capacity of 6900 mAh to 4200 mAh to 2900 mAh and is now only 962 mAh, which is less than an hour of up time doing anything other than sitting idle.

     

    I don't know if the computer or the battery determines the battery health.  But at this point it looks like your battery health isn't good and a replacement is in order.  While I think battery health could fluctuate +/- 10%, I don't see it improving a lot from where you are today.

  • Csound1 Level 7 Level 7 (32,250 points)

    ScratchSF wrote:

     

    I don't know if the computer or the battery determines the battery health.  But at this point it looks like your battery health isn't good and a replacement is in order.

    Battery health is affected by environmental conditions (air temp, air pressure and moisture content) as well as power drain (computer), manner of use (user), it is not a simple matter to isolate what is doing what, especially as these factors exist in combination.

     

    Simple things can make a difference, do not flatten the battery (50% is as low as you should go prior to recharging, not always possible though), high temperatures and a high rate of discharge are to be avoided, same applies to low temperatures. A small perecntage of the battery chemicals are used up in every cycle (think of gas in a car, can't move without using some) but the user has only marginal influence here.

     

    The best thing is to keep it on the power supply whenever possible, and try to avoid watching videos in the sun at a high altitude until the battery is flat.

     

    Charge to 50-70% if storing the Mac.

     

    I agree that the battery in question needs replacing, it is way out of the expected zone.

  • ScratchSF Level 1 Level 1 (60 points)
    Currently Being Moderated
    Mar 15, 2013 1:13 PM (in response to Csound1)

    CSound1, HI!

     

    Yes, I know that; thanks for the reminder of what affects battery health.  Important to keep those in mind.  I'm more curious to know "where" battery health is computed?  Is it calculated in the firmware?  In the software?  Or in the microcontroller onboard the LiPo battery?

     

    I agree about your comment about using the charger.

  • Csound1 Level 7 Level 7 (32,250 points)

    The data is supplied by the battery, I assume (as I am not sure) interpretation of the data is done by the computer firmware.

  • GaryGate Calculating status...

    Installed 10.8.3 on my mid-2010 MacBook Pro.  No positive change, now showing 2:21 at 89%.
    Battery Capacity is showing a max of 4278 mAh, which is 62% of original 6900 mAh. Cycle count is only 60.
    I'm very disappointed.

  • salty777 Calculating status...
    Currently Being Moderated
    Mar 15, 2013 3:47 PM (in response to GaryGate)

    I'd be fed up about that too... 60 cycles?? Maybe it has something to do with age, too?

     

    It's something I'm going to have to watch too. I am very pleased that the duration is back, but I noticed after 1 cycle it lost nearly 100mAh. Coconut Battery has logged that earlier it took nearly 30 cycles to reduce it by that much.... I'm now at 88 cycles, 6084 mAh, 91%.... all ok so far, but a sudden, big drop....

  • ScratchSF Level 1 Level 1 (60 points)
    Currently Being Moderated
    Mar 15, 2013 4:48 PM (in response to GaryGate)

    @GaryGate, it is unlikely that 10.8.3 will improve your capacity much from where it is now.  And, while I speculate that ML 10.8, 10.8.1, or 10.8.2 could be the cause, I can't definitively say that without knowing where you stood before you updated to ML.  If you are still within the warranty period, I would suggest that you take it in because I think the guidelines are 80% capacity for quite some time.  I'm sure 60 cycles doesn't qualify as "quite some time."

     

    I don't know what your average current is right now, but I would speculate it as around 1400 mAh - based on what you've said, which would translate into about 3 hours when fully charged.  So, you have two issues:  First, why is your mAh up that high (assuming that is, in fact true) and second, is there anything you can do to get your batter replaced to be closer to full health / capacity - which at this point probably means replacement?

     

    Did your amount of remaining time change after your upgrade to 10.8.3?

  • GaryGate Level 1 Level 1 (0 points)

    @ScratchSF,  here are some illustrations of my situation. I started this staistics collection after Mountain Lion install, when a lot of people were having problems.

    insScreen Shot 2013-03-16 at 11.18.34.PNG

    Screen Shot 2013-03-16 at 11.22.51.PNG

    Max Capacity has dropped from yesterday

     

    The amount of remaining time is about the same as before upgrade to 10.8.3. 

    You are spot on for the mAh usage, it hovers around 1300-1400 mAh. I have hardly any applications running, Safari and Thunderbird, Activity Monitor, Dropbox, Messages. Wifi is on, Bluetooth off, screen at 50%, keyboard light off. Normally my Macbook is plugged in.
    I agree, the battery is damaged beyond repair. No warranty anymore. But I have a 2 hour drive (one way) to nearest maintenance center, so I need to be absolutely sure they will replace the battery while waiting because I will not do the trip more than once.

  • Csound1 Level 7 Level 7 (32,250 points)
    Currently Being Moderated
    Mar 16, 2013 7:00 AM (in response to GaryGate)

    In comparison here's a 3.2 year old battery on 10.8.3

     

    Screen Shot 2013-03-16 at 8.55.35 AM.png

     

    No problem here with Safari, Opera, Mail, Activity Monitor, BusyCal and Preview, brightness at 70%. (I would not allow the junk called Dropbox on my machine) so SugarSync is running.

  • CDN engineer Calculating status...

    After waiting for 10.8.3 in hopes that this would resolve the battery issue I finally gave in and reverted to Snow Leopard. My old Macbook Pro now runs much cooler and the battery life has come back to pre-Mountain Lion levels. It even feels faster. I also like that I can unplug my laptop again!

     

    I think my new rule of thumb will be to avoid any updates (Mac or PC) that are issued after the architecture has gone through a major upgrade. (Not just a processor change or speed bump.) A new OS may work but it will never be optimal for older computers.

     

    Guess Mountain Lion will have to wait until I get a new iMac in the fall.

  • Beisarius Level 1 Level 1 (0 points)
    Currently Being Moderated
    Mar 17, 2013 8:46 AM (in response to GaryGate)

    Hello Garry,

     

    6 months on my MBA, I have 62 cycles and the battery health oscillates beteen 97-94 and 97%. However, you are using it improperly by having it plugged, and 60 cycles in 2-3 years means your battery runs on parasitic power. Your battery is not supposed to last, and whether L SL or ML it will equally damage a battery. True, powernap will consume more power in ML, and I dont need it so have it turned off. But equally, ML on older systems I tried, with new batteries, performs consistently. The only time I could find an inconsistency was either battery defect or other hardware defect (Aug to Sep 4 MBAs arrive with one defective battery and three with defective hardware in a row). Normally, if you have a warranty, your battery should be replaced. However, your usage is causing the issue. Am fairly sure that you do not use your cell phone plugged most of the time on a desk and the same principiple applies to these laptops.

  • GaryGate Level 1 Level 1 (0 points)

    Thanks Belsarius, 

     

    I'm such an idiot using my laptop in this way. My battery problem is all self-inflicted. How stupid I am.   Next time I must get a laptop where the battery is easily removable for plugged-in use, like the Thinkpad I used before. It's still around, 9 years old, running Ubuntu sans problem.

Actions

More Like This

  • Retrieving data ...

Bookmarked By (85)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.