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  • 3,330. Re: Battery life dropped considerably on Mountain Lion.
    ScratchSF Level 1 Level 1 (60 points)

    Csound1 wrote:

     

    The consistent thing that I have noticed is that the estimate is almost invariably longer than the reality. +10 to +30 minutes is the range. ...

     

    It might help if I provide a bit more clarity on my 10.8.3 observation.  I might see an Music estimate of 4:30, where the Current Usage estimate was 3:30.  At the time if all I was doing was listening to music, then the estimates were not consistent.  Furthermore, at that time the reality (as measured using my wristwatch) would have aligned with the Current Usage - or 3:30.

     

    The improvement I'm communicating with respect to 10.8.4 is twofold.  First, when I was listening to music not only was the estimate 4:30, but the current usage also reported 4:30.  They matched.  This is the consistency to which I refer.  Second, over the course of 90 minutes both "estimates" changed from around 5:30 to around 4:00.  While they are estimates, or "guesses", these estimates matched and were consistent with what I would have expected to have seen, given 90 minutes of actual use. 

     

    Csound1 wrote:

     

    ...  10.8.4 has not been installed long enough for any conclusions to be drawn yet, but it does not seem to have got any worse

     

    Agreed.  If this were a PhD thesis defense, I should have said "...it is strongly suggested that 10.8.4 has better reporting consistency..." since I do not have sufficient mathematical evidence to statistically support my statement.  Point taken.

     

    Overall, I think 10.8.4 fixed a few more things in the battery area.  Hopefully, for those still haveing trouble, it will help.

  • 3,331. Re: Battery life dropped considerably on Mountain Lion.
    Csound1 Level 8 Level 8 (35,445 points)

    Thanks for the info

  • 3,332. Re: Battery life dropped considerably on Mountain Lion.
    bApTizE Level 1 Level 1 (0 points)

    i went back to lion for the second time, what a fiasco.... this reminds me of windows vista!!. I'm going to contact apple and get a refund for ML. I don't have hope that apple would even admit there is an issue with battery life!!

  • 3,334. Re: Battery life dropped considerably on Mountain Lion.
    VoilaMagic Level 1 Level 1 (0 points)

    This is true, third-party applications through or not through the app store is causing battery life to be less and less, however, yesterday I was working unplugged and my MBP17 had only 3 hours of use in it, beginning from 100% battery life. This is a change since I upgraded to 10.8.4 a few days ago. This is substantially less battery than previously experienced. I did work with airport turned off. Applications open were few, all of which were not third party.

     

     

    Processor  2.5 GHz Intel Core i7

    Memory  16 GB 1600 MHz DDR3

    Graphics  Intel HD Graphics 3000 512 MB

    Software  OS X 10.8.4 (12E55)

  • 3,335. Re: Battery life dropped considerably on Mountain Lion.
    bApTizE Level 1 Level 1 (0 points)

    CT wrote:

     

    Runaway applications can shorten battery runtime ... - Support - Apple

     

    Brand new installation of ML with latest update, above is a moot point.

     

    To me, this sounds like apple is slowly going down the drain pipe.......

     

    P.S. Why do i get more battery life while on Lion

  • 3,336. Re: Battery life dropped considerably on Mountain Lion.
    bcenteno Level 1 Level 1 (0 points)

    I have tried everything on this thread and others, I have researched off of this site. No amount of reverting to clean installs of Lion, monitoring battery use, shutting down runaway applications, rechecking SMC updates, clean reinstalls of 10.8.x, resetting SMC after each evolution has had an effect. Is is possible that the 10.8.2 fried a hardware switch on the CPU for power stepping? My Air has felt hot to the touch since 10.8.2.- I never felt this before 10.8.2 when web-browsing.

     

    <Edited By Host>

  • 3,337. Re: Battery life dropped considerably on Mountain Lion.
    bcenteno Level 1 Level 1 (0 points)

    I hope I made it clear in my post above that I have tried all of the above. It is upsetting to invest this much energy for the inclusion of some new features I don't care about. The merging of ios and OS X is an absurdity.

  • 3,338. Re: Battery life dropped considerably on Mountain Lion.
    bApTizE Level 1 Level 1 (0 points)

    bcenteno wrote:

     

    I have tried everything on this thread and others, I have researched off of this site. No amount of reverting to clean installs of Lion, monitoring battery use, shutting down runaway applications, rechecking SMC updates, clean reinstalls of 10.8.x, resetting SMC after each evolution has had an effect. Is is possible that the 10.8.2 fried a hardware switch on the CPU for power stepping? My Air has felt hot to the touch since 10.8.2.- I never felt this before 10.8.2 when web-browsing.

     

    <Edited By Host>

    I wonder if anyone can hardware test your theory above about the CPU!! my late macbook pro 2011 gets really hot on the ML but not at all on the lion.

  • 3,339. Re: Battery life dropped considerably on Mountain Lion.
    Sarttiso Level 1 Level 1 (0 points)

    Just reiterating what everybody has been saying for almost a year now: battery life is abysmal.

     

    I have a 2011 13" MBP, had it loaded with Lion and battery life was great, talking like 7 to 8 hours. I left the country last August, came back a couple weeks ago, and stupidly without checking a forum like this "upgraded" to Mountain Lion. Now I'm struggling to hold onto a 4 hour charge, and that after a few adjustments.

     

    Speaking of which, a quick note on these "runaway applications": As I'm sure somebody else posted in these 223 pages of complaints and possible solutions, ending some processes shown in the activity monitor will alleviate the situation somewhat. The most dramatic for me was Google Chrome, specifically the rendering processes. Some tabs hog the CPU at 90% seemingly indefinitely, which was bringing my battery life down to a measly two hours. I've been using Firefox with much better results, although Chrome also worked fine once I ended the guilty processes.

     

    Anyway, I've been noticing similar trends with other Apple products. I recently acquired an iPhone 3GS which, loaded with iOS 6.1.3 also reaches only half the battery life it had with version 5. Guess what though: the iPhone 5 apparently has no problems. The newer Macbooks also seem to be having fewer problems with the new software at least in terms of battery life, reaching supposedly 10-12 hours per charge. Props to them, but I'm sitting here wondering what happened to my 7-8 and why Apple hasn't done anything about it.

  • 3,340. Re: Battery life dropped considerably on Mountain Lion.
    VoilaMagic Level 1 Level 1 (0 points)

    Sarttiso wrote:

     

    The most dramatic for me was Google Chrome, specifically the rendering processes. Some tabs hog the CPU at 90% seemingly indefinitely, which was bringing my battery life down to a measly two hours. I've been using Firefox with much better results, although Chrome also worked fine once I ended the guilty processes.

    Google Chrome also has a background system that is running. Check in Preferences > Advanced > Privacy to see if "Enable Phishing and Malware Protection" is checked. It looks like this;

     

     

    If it is checked, the background process is running which drains the battery. Also, third-party applications really do drain the battery, whether they are "runaway" or not, I've noticed that they do drain the battery, so, I uninstall and install when I'll use the application for a while, like a project. Of course, Applications that are not often used but really needed are kept.

     

    Cycling my battery helps to maintain its length of power.

     

    OS X Mavericks massively keeps the battery performing well. Safari is the better ML browser for unplugged portables. The new Safari seems to be working great (for me) while draining little battery life (the newer Safari releases are stripped of so many options and dev tools that I require.) I use Chrome when I'm plugged in, Safari-only when I'm strickly unplugged. I use Firefox no-longer.

     

    The newer Macbooks also seem to be having fewer problems with the new software at least in terms of battery life, reaching supposedly 10-12 hours per charge. Props to them, but I'm sitting here wondering what happened to my 7-8 and why Apple hasn't done anything about it.

     

    OS X Mavericks gives us back our battery-life. until then, I use Apple-only applications and minimal third-party applications while unplugged. I also shut-down every night, work unplugged as much as possible during the day, turning the WiFi off helps the battery while I'm developing off-line. For extreme-work, I use the iMac 27.

     


  • 3,341. Re: Battery life dropped considerably on Mountain Lion.
    Sarttiso Level 1 Level 1 (0 points)

    Cool tip about Chrome; I'll check it out. I prefer Chrome to Firefox, although I haven't given Safari a shot in awhile, so I'll be revisiting it.

     

    I guess I've been pretty out of the loop since I got back, but after some research on Mavericks, it does indeed look like there is some hope! I was going to revert back to Lion, but I think I'm going to stick it out for a few more months and see how Mavericks performs. Seems like some pretty cool software updates are included, though, especially in terms of battery life conservation.

  • 3,342. Re: Battery life dropped considerably on Mountain Lion.
    VoilaMagic Level 1 Level 1 (0 points)

    Awesome! I totally agree with you, and Apple, Inc, on OS X Mavericks battery life- it's close to quantum.

     

    You mentioned Safari, the new Safari is light-weight when running, now, though, still powerful and full-featured. I do miss the development tools from yester-year. When you update Safari (it's in the combo bundle in 10.8.4), Safari is super fast and functions as intended. The version 6.0.5 is what I'm using and it is stable, lightening fast, does little to the battery and enables the privacy settings to actually function as intended.

  • 3,343. Re: Battery life dropped considerably on Mountain Lion.
    ScratchSF Level 1 Level 1 (60 points)

    If you've replaced your battery between 2008 and 2012 at a Best Buy store, be aware that your battery might be under a recall: http://bigstory.ap.org/article/best-buy-recalls-batteries-over-fire-risk

  • 3,344. Re: Battery life dropped considerably on Mountain Lion.
    Beisarius Level 1 Level 1 (0 points)

    I also noticed a significant battery time fluctuation/drop since installing 10.8.4. (also did a fresh install) I think it easily lost an hour? Enough to promopt me to log here again after several months. Wiewing these pages (and no other apps opened), the counter would hover between 4 hrs or 3:10 remaining, up and down, up and down. Actualy battery level is not as important as is the behavior. Was scrolling in safari. Now, as soon as I start typing, remaining time goes up. Since scrolling pages is mainly GPU rendering, I am convinced it still is GPU management. Got three years waranty so 2.4 left at Apple's expense. Just interesting that until 10.8.4 nothing odd, 10.8.4 sudden changes.