Battery Life

Discussion in 'MacBook Air' started by App Downloader, Apr 26, 2011.

  1. macrumors member

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    #1
    I opened my MBA 13 2010 ultimate in the morning from sleep, and after using it for a while it had 58% battery life.

    When I came home from school, i waked it up again from sleep and the battery life was 39%

    Is something wrong with my MBA? I closed it at 7:45 in the morning and I waked it up at 4:30 in the afternoon

    Also: Time machine backup drive was connected etc.
     
  2. macrumors 65816

    NZed

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    #2

    it drains about 1% every hour.

    also did you check the box that says "Put the hard disk(s) to sleep when possible" in System Pref>Energy Saver
     
  3. macrumors newbie

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    #3
    Try testing it without the external drive plugged in as that is likely sucking the power, Have you noticed this problem before? After an hour the MBA goes into deep sleep that let's it last 30 days so that amount of draining just doesn't seem right :confused:
     
  4. macrumors 65816

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    #4
    Your first statement is false. It does not drain 1% every hour, as I have put my MBA (with 90% battery left) to sleep overnight and woken up later (11-12 hours later) and it having 89% battery left when I wake it up from sleep.

    This is because it enters deep sleep after one hour.
     
  5. macrumors member

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    #5
    To NZed

    I did everything you wanted me to do so I'm hoping for the best.

    Also, I unplugged my external drive, so I'm gonna see if it helps tonight
     
  6. macrumors 68000

    Over Achiever

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    #6
    The external drive is likely drawing battery. I know even while the MBA is put to sleep, I can charge my phone connected to it.
     
  7. macrumors 65816

    NZed

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    #7
    Im sorry because i use to have the first macbook air but i've never noticed that and sold it for the 13" 2010 MBP

    Sorry if i have misguided you OP
     
  8. macrumors 65816

    NZed

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    #8
    Sorry i think i may have misguided you.

    Checking the tick box that says "Put the hard disk(s) to sleep when possible" is not really helpful since i guess that it will only applies to external hard drives because the hard drive in the MBA is an SSD.

    Sorry
     
  9. macrumors demi-god

    GGJstudios

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    #9
    It's also possible that it didn't stay asleep the whole time.

    Mac OS X: Why your Mac might not sleep or stay in sleep mode

    This should answer most, if not all, of your battery questions:
     
  10. macrumors member

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    #10
    Also...

    I sometimes forget to unplugged my Magsafe, and it charges for the whole night, while it is sometimes in sleep mode. Is that also altering performance?
     
  11. macrumors demi-god

    GGJstudios

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    #11
    No. Read the Battery FAQ I posted. It will answer all your questions.
     
  12. macrumors 6502a

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    #12
    Apple advertises up to 30 days standby for the late 2k10 Air. I know you could hedge on the "up to part", but a this is clear advertised differentiator for this product, "it's like the merger of the iPad + laptop" paraphrasing Steve. It does function differently from other Apple laptops in that regard. What the OP is seeing is not expected behavior.
     
  13. macrumors demi-god

    GGJstudios

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    #13
    Yes, I'm aware of that. That's why I suggested it may have not been in sleep mode the whole time.
     
  14. macrumors regular

    willgreene99

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    #14
    Thanks for the tip on Coconut. I installed it last night and ran it and here is what it said:

    [​IMG]
     
  15. macrumors 68000

    The Samurai

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    #15
    Macbook Battery Tips - this video may be useful.
     
  16. macrumors member

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    #16
    Wirelessly posted (Mozilla/5.0 (iPod; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)

    Thanks tO everyone! Since I unplugged my external drive, battery has been awesome, again!
     
  17. gloryunited, Apr 27, 2011
    Last edited: Apr 27, 2011

    macrumors 6502

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    #17
    70 cycles in 22 weeks, is it too much usage?

    Should I keep it plugged more often?
    When would the battery start degrading?

    Under normal usage (mainly web surfing with a bit of youtube), I can't even get close to the advertised 7 hours of battery time.
     

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  18. FX4568, Apr 27, 2011
    Last edited: Apr 27, 2011

    macrumors 6502

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    #18
    edit: nvm
     
  19. macrumors 6502

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    #19
    These batteries are rated to retain 80% of their charge through the first 1000 cycles. Keeping it plugged in is fine as long as you use it off of the power adapter occasionally.

    As for not getting 7 hours, use AdBlocker and ClickToFlash for increasing web browsing time.
     
  20. macrumors 6502

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    #20
    Thanks.

    I do use it quite often off the power adapter, in fact almost every day, for a good few hours every time. I use Chrome with FlashBlock installed and I use HTML5 for YouTube , but still, not getting 7 hours.

    Does instant messaging eat up the battery quickly? (Adium text-only, not voice calls like Skype)
     
  21. macrumors 65816

    maclaptop

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    #21
    If users would take responsibility and read the Battery FAQ, not only would these questions be avoided, but far more people would enjoy longer battery run times.

    One of Apples strengths is providing exemplary resources on the web site for all products.

    When in doubt go to Apple.com, it couldn't be easier.
     
  22. macrumors member

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    #22
    maybe you could bring it to the Apple store if there is any problem or werid problem if there is a battery life issue.
     
  23. macrumors member

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    #23
    My 3,1 11' drained 5% of battery overnight (12h)... I disabled bluetooth now to see if that helps. It believe it would not last for 30 days as advertised in standby.
     
  24. macrumors member

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    #24
    Do mac people not understand hibernation which has been on windows laptops for years? Essentially it will last the same period as it would last turned off. Its not some iPadization of the mac.
    hibernation is not standby. Standby keeps the ram powered, hibernation writes to the hd and turns of all power afterwards.

    Mobile
     
  25. macrumors newbie

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    #25
    I believe that you will never going to get 7 hours with youtube, but I did a test and I got exactly 8 hours and 6 minutes (50% brightness, WiFi on and working on word/excel/email and internet of course)
    I'm so happy with my new MBA 11" 64GB :D
     

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