Battery Life

Discussion in 'MacBook Air' started by jw3571, Dec 20, 2010.

  1. jw3571 macrumors regular

    May 21, 2010
    How long are you guys getting out of your battery? I was mostly just using the Internet and only got 4 hours. Is that common?
  2. afireintonto macrumors 6502a


    Jul 22, 2008
    im getting a good six on just about every charge:]
    heavy internet browsing, itunes, click to flash installed, and a garageband session every now and again. i love this machine!
    i have the 13''
  3. GreenFrog macrumors member

    Aug 22, 2008
    I have a 13" ultimate.

    With only itunes, wifi, outlook, and word, I get around 3-4 hours of usage. That's with 100% brightness.

    Apparently Apple's claim of 7 hours is only on 50% or 75% brightness, but I forgot which.
  4. deedas macrumors regular


    Dec 2, 2003
    Baltimore, Maryland
    I've found I can almost reach the 7hr mark if I don't go past 50% brightness and limit my flash usage to next to nothing.
  5. aldo818 macrumors regular

    Nov 18, 2009
    South of France
    i have the 13 ultimate and with heavy browsing and flash installed i get about 4h30

    If i put the brightness down to 75 % i get about 5h20 with heavy browsing and downloading.

    My Batterie after 12 cycles is at 97% health is that normal?

    How often do you guys calibrate or don t we have to with the new batteries.

    Does anyone know how many cycles a batterie of the new macbook air should last?
  6. Ann P macrumors 68020

    Jun 29, 2009
    50% with minimal settings I believe.
  7. Corax macrumors 6502


    Apr 27, 2009
    Willemstad - Curaçao
    When I plug my 13" Air to my 42" full HD TV, and watch a 120min Full HD MKV movie with VLC, there is around 50% battery left afterwards. That's pretty good to me!
    When watching other, smaller, 720p movies it uses around 25/30% per movie.
  8. Deshke macrumors newbie

    Dec 16, 2010
    and the guys with the 11 inch ones, do you really get 5 hours ?
  9. thelookingglass macrumors 68000

    Apr 27, 2005
    Just all depends on what I'm doing. Just surfing the net, doing some Office work, then yes I do. If I start blasting videos, downloading stuff and installing apps, then 5 hours is a pipedream.

    If the MBA had the iPad's battery life, this would truly be my dream machine.
  10. shootingstar64 macrumors regular


    Nov 27, 2008
    Monterey, CA
  11. GGJstudios macrumors Westmere


    May 16, 2008
    How much time you get on a charge varies greatly, depending on what you have running. Screen brightness is a big factor. Other factors include WiFi, bluetooth, widgets on your dashboard, background processes, apps you have open, Flash on websites, etc. It's not realistic to expect to achieve the advertised durations in the real world, since there are so many contributing factors.

    This should answer most, if not all, of your battery questions: Apple Notebook Battery FAQ
  12. Over Achiever macrumors 68000

    Over Achiever

    Jul 22, 2002
    Toledo, OH, formerly Twin Cities, MN
    11.6/4/128 here

    Safari, iTunes, and light Lightroom use with 2-6 bars brightness gets me over 5 hours still, which is great for cross country flights.

    Skype will get me barely over 3 hours fullscreen, half brightness.

    Netflix will get me 2-2.5 hours streaming HD, quarter brightness.
  13. Deshke macrumors newbie

    Dec 16, 2010
    quarter brightness ? lool :p that isreally dark :p
  14. logandzwon macrumors 6502a

    Jan 9, 2007
    13 MBA with 4GB here,
    I get about 6 hours running;
  15. asoksevil macrumors 6502

    Jun 7, 2010
    Taipei, Taiwan
    Depending on which tasks I'm performing, but usually 4 hours if I play or watch some movies. Web surfing with not too much flash plus sparrow (mail), powerpoint, word with bluetooth off and brightness set at 50% I can get almost 7 hours.
  16. St. G macrumors member

    Nov 29, 2010
    I'm seeing about 5 hours in OSX, but only about 4 hours in Win 7 doing the same sorts of things. Not sure what explains the disparity, but it's there.

    Once I start 3D gaming in Win 7...well, it's damn well time to plug in.
  17. Deshke macrumors newbie

    Dec 16, 2010
    lol none if you are saying you are using the 11 or 13 inch ...
  18. St. G macrumors member

    Nov 29, 2010
  19. Over Achiever macrumors 68000

    Over Achiever

    Jul 22, 2002
    Toledo, OH, formerly Twin Cities, MN
    I liked watching movies with the lights off, and I find that 4 bars works fine, sometimes I watch with 2 bars! =)
  20. St. G macrumors member

    Nov 29, 2010
    In a dark enough room, even 1 bar is plenty. But usually, I'm running in the 50-66% range.
  21. DraziGuy macrumors member

    Oct 20, 2009
    I've got a 13". I get about 7-7.5 at about 70% brightness. That is usually a 50 minute typing session followed by 10 minutes browsing between classes. Gets me through a whole day without having to worry about carrying the charger or finding an outlet.
  22. crazyyankeefan macrumors regular

    Jul 27, 2008
    Albany, NY
    I must say some people are really paranoid about this whole battery thing. Overall, I believe the batteries are fine, seriously...

    How many hours you get depends on a lot of various parameters when you use your computer. Brightness, the type of work/program running, etc.

    I put my computer to sleep right after it was fully charged. After 4 days, it has 87% left, so it's about right that it can last 30 days of sleep.
  23. Jaro65 macrumors 68040


    Mar 27, 2009
    Seattle, WA
    Similar experience here.
  24. Matthew Yohe macrumors 68020

    Oct 12, 2006
    You should be able to get about 1000 cycles before it's at 80% of it's health.

    So, if you get 6 hours today, you'll get 4.8 after 1000 cycles.
  25. GGJstudios macrumors Westmere


    May 16, 2008
    That's not necessarily true. Battery health varies greatly, depending on how a battery is cared for. Also, the time you get on a charge varies greatly, depending on how your Mac is configured and what you have running at any given time.

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