brand new 13" macbook air -- horrible battery life =(

Discussion in 'MacBook Air' started by pfjellman, Oct 31, 2010.

  1. pfjellman macrumors regular

    pfjellman

    Joined:
    Mar 18, 2010
    Location:
    Oregon
    #1
    so my brand new 13" macbook air arrived last tuesday. over the last few days i've noticed that i only get 2-3 hours of battery life even with the screen brightness nearly all the way down. right now, i have 79% battery life remaining and it only says 2 hours 24 min left. I've only used it for about 30 minutes this morning and it was fully charged.

    i'm about ready to return it, this is extremely disappointing. anyone else having this issue???
     
  2. pfjellman thread starter macrumors regular

    pfjellman

    Joined:
    Mar 18, 2010
    Location:
    Oregon
    #2
    in the 4 minutes since this post it now says 2 hours 13 minutes. it's ticking down wayyyy too fast. something is wrong here.
     
  3. WardC macrumors 68030

    WardC

    Joined:
    Oct 17, 2007
    Location:
    Fort Worth, TX
    #3
    This sounds about like the battery capacity of the OLD models, NOT the new ones.
     
  4. super tomtendo macrumors 6502a

    super tomtendo

    Joined:
    Aug 29, 2009
    Location:
    Florida
    #4
    Try calibrating it. See the life percentage after that.. If still bad take it to an apple store or if no store call them.
     
  5. pfjellman thread starter macrumors regular

    pfjellman

    Joined:
    Mar 18, 2010
    Location:
    Oregon
    #5
    i have calibrated it. guess i'll try again today. argh
     
  6. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #6
    What are you doing with it? 2-3 hours is normal if you're doing something intensive but not if you're just browsing non-Flash sites and using Word.
     
  7. pfjellman thread starter macrumors regular

    pfjellman

    Joined:
    Mar 18, 2010
    Location:
    Oregon
    #7
    all i have open is finder and safari. i have click-to-flash installed so no flash loads, and i'm not visiting any flash video sites. just browsing around, google searches, reading blog sites, etc.

    and the battery life has been like this constantly, ever since it delivered last tuesday. i haven't done ANYTHING intensive on it, because I have a Mac Pro. that's why i ordered this -- to be the ultra portable ultra light ultra long life laptop to handle text, email, web browsing, etc.
     
  8. Bokes macrumors 6502

    Joined:
    Mar 4, 2008
    #8
    Something wrong bud.
    I get 4 1/2 hours on a revC MacAir.

    Another poster claimed he got 11 hours + life on his new 13inch.
     
  9. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #9
    Have a look at Activity Monitor ( Applications / Utilities / *) and select All Processes*and sort by CPU to see what the culprit may be.

    image below uses sorting by CPU as an example
    [​IMG]
     
  10. pfjellman thread starter macrumors regular

    pfjellman

    Joined:
    Mar 18, 2010
    Location:
    Oregon
    #10
    thanks for the tip man, but I'm a software developer and I know about activity monitor -- it was one of the first things i checked. as i said, i only have finder and safari open. i've also installed imenustat 2 (the free version)
     
  11. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #11
    I didn't know that, and two open applications don't meant that there can't be a runaway process like MDS or QuickLook Helper, which are visible via selecting "All Processes".

    Have you checked the battery via System Profiler or CoconutBattery? What about contacting Apple?
     
  12. pfjellman thread starter macrumors regular

    pfjellman

    Joined:
    Mar 18, 2010
    Location:
    Oregon
    #12
    yes, that's true. but the only thing taking more than 1% of CPU is kernal_task which is using about 3%. everything else is less than 1%.

    i will contact apple this week if it continues.
     
  13. neteng101 macrumors 65816

    Joined:
    Jan 7, 2009
    #13
    I went at least 5+ hours with time remaining on battery yesterday (and lots of brightness, maybe 60-70%) with a lot more apps running. Either a bad battery or some system component (hardware) sucking up the juice in yours? :confused:
     
  14. ReallyBigFeet macrumors 68030

    ReallyBigFeet

    Joined:
    Apr 15, 2010
    #14
    They can hook up one of their diagnostic tools at the Genius Bar and isolate whether or not its a bad battery in like 30 seconds. I wouldn't waste a bunch of time trying to troubleshoot it yourself if you just bought it. Set up an appointment...you could walk out the door with a new one unless it was a CTO.

    I played Left For Dead 2 on my 13" MBA yesterday for 3 hours on a full battery charge. My fans were whirring the whole time and even then, after that whole time, I still had over an hour left on the battery when I was done. With normal daily use, I'm averaging right around 7 hours.
     
  15. Hankster macrumors 68020

    Hankster

    Joined:
    Jan 30, 2008
    Location:
    Washington DC
    #15
    Seems like a defective battery. Time to head to Apple or ship it back.
     
  16. HiRez macrumors 603

    HiRez

    Joined:
    Jan 6, 2004
    Location:
    Western US
    #16
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A293 Safari/6531.22.7)

    I would run Activity Monitor to see if some process is sucking up all your CPU cycles, it could be something like mds (file system indexing), Flash player, Finder (which can actually be a lot of things). One thing to check is your Finder view preferences, there is a bug in Snow Leopard where if you have Calculate File Sizes checked and have any Finder window in list view, it will constantly peg your CPU and disk access and drastically reduce battery life, even after the visible sizes are all calculated.
     
  17. chrono1081 macrumors 604

    chrono1081

    Joined:
    Jan 26, 2008
    Location:
    Isla Nublar
    #17
    Something is totally wrong. I get 6 - 8 hours of decent use out of mine.
     
  18. kp98077 macrumors member

    kp98077

    Joined:
    Oct 26, 2010
    #18
    How to Tell Time Since Last Charge?

    Hello

    Wondering if there's a way to tell how much time i was able to get out of one charge on my 11.6"? I'd be currious. I have been on it pretty much since7 am this morning till now (1pm) with transferring itunes library, internet. etc and it still says i have 1:32 left!!
     
  19. pfjellman thread starter macrumors regular

    pfjellman

    Joined:
    Mar 18, 2010
    Location:
    Oregon
    #19
    the nearest Apple store to me is about 5-6 hours away so that is not an option, unfortunately.

    i'm going to try to recalibrate the battery again and test it for a couple more days. if it's still doing this i will probably send it back and get a 13" macbook pro for $200 cheaper.

    i've verified there are no process running sucking the CPU. i've also noticed once that the screen gets little white lines flickering on the lower right side, but that problem only happened the second day i had it (wednesday) and hasn't happened again since. it went away when i closed the lid and re-opened it.
     
  20. wirelessmacuser macrumors 68000

    wirelessmacuser

    Joined:
    Dec 20, 2009
    Location:
    Planet.Earth
    #20
    I've followed this thread since your original post, as I am experiencing the same behavior with mine, and I too am quite experienced in these things. Ironically, my plan prior to reading this thread was / is the same as yours. I'm going to recalibrate the battery again, then see where it stands.

    Secondly, and of even greater concern, is that I've got the same issue with flickering, only mine is more frequent. The genius at the local Apple store verified it, but of course cannot exchange the machine as they are out of stock. With no promise of an estimated date, I've decided to monitor it myself for a few more days.

    Cheers... :)
     
  21. pfjellman thread starter macrumors regular

    pfjellman

    Joined:
    Mar 18, 2010
    Location:
    Oregon
    #21
    well at least i'm not alone! let's keep in touch in this thread and share our findings. =)
     
  22. lulla01 macrumors 68020

    lulla01

    Joined:
    Jul 13, 2007
    Location:
    U.S
    #22
    adff

    mine said 2 hours i fully drained it and then charged it overnight now im getting 4-6 hours ezmode.
     
  23. pfjellman thread starter macrumors regular

    pfjellman

    Joined:
    Mar 18, 2010
    Location:
    Oregon
    #23
    Yeah I've fully drained it now, only took about 2 hours for it to die from a full charge. Gonna let it sit overnight and fully charge it in the morning and see how it is.
     
  24. bcaslis macrumors 68020

    Joined:
    Mar 11, 2008
    #24
    What does yours say in System Profiler for maximum charge capacity? Mine say 6644 mAh.
     
  25. pfjellman thread starter macrumors regular

    pfjellman

    Joined:
    Mar 18, 2010
    Location:
    Oregon
    #25
    I'll let you know when I boot it up tomorrow.
     

Share This Page