Poor macbook air battery life

Discussion in 'MacBook Air' started by zstar, Nov 19, 2010.

  1. zstar macrumors member

    Joined:
    Nov 10, 2010
    #1
    I have a 13"/256/4 macbook air.

    I'm losing 10% of my battery life per 30 minutes on average. Just using at 50% brightness, iTunes, basic flash-less web surfing and MSN Messenger for Mac in the background. Which equates to about 5 hours till fully drained. Have already calibrated it once, no difference.

    Is this normal? I'm beginning to think my 13" has a below average battery compared to what others are seeing here. (i.e. 10hour + for even the 11" which supposedly has a smaller battery capacity than my 13" etc.)

    Thanks in advance.
     
  2. double329 macrumors 6502

    Joined:
    Sep 10, 2008
    #2
    I definitely don't get 10-11 hours of continue usage on my MBA 13 Ultimate. At the same time, I don't see it drains as quick as you mentioned. But, I didn't really pay attention too much. I used my MBA a lot. I usually get to charge the battery before I go to bed. It did go below 20% before I charge it. Overall, I don't think it was too bad. I just use my MBA and not to worry about the battery. With my normal usage, it lasts to the end of the day.
     
  3. Jayomat macrumors 6502a

    Jayomat

    Joined:
    Jan 10, 2009
    #3
    do a calibration (once a month)

    http://support.apple.com/kb/ht1490
     
  4. aristobrat macrumors G4

    Joined:
    Oct 14, 2005
    #4
  5. HLdan macrumors 603

    HLdan

    Joined:
    Aug 22, 2007
    #5
    Im confused, the 13" is advertised to have 5-7 hours battery life. The OP is getting exactly what's advertised isn't he, or am I reading his post wrong?
     
  6. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #6
    http://www.apple.com/macbookair/performance.html
     
  7. Jayomat macrumors 6502a

    Jayomat

    Joined:
    Jan 10, 2009
    #7
    whoop, must have missed that, never mind
     
  8. vanyuen macrumors newbie

    Joined:
    Nov 19, 2010
    #8
    I do agree. My MBA 13 (128 SSD, 4G Ram) would normally run for 4-5 hours before it go to sleep cos' of low power, with like 50% screen brightness and light use of Chrome for surfing (with flashblocker on).

    I did calibrate the battery and It just can't use for over 7 hours like some others claimed (7 -11 hours).....

    I just wondering are my MBA batteries a defect?
     
  9. macbook123 macrumors 68000

    Joined:
    Feb 11, 2006
    #9
    That's because you need to have hypersensitive retinas so that you can use the Air at 12.5%-25% brightness (and need sunglasses to comfortably see outdoors), which is what some of the posters here are able to do and get 7 hours or more, while others like myself and maybe you would consider 12.5%%-25% too dim to do anything, but are able to see outside without sunglasses. Their genetic makeup has advantages, as does ours...

    I'm starting to believe the Apple test conditions weren't what they claim. At 50% brightness there is no way for me to get 7 hours, even if all I do is text editing with WiFi and Bluetooth off. Lowering the brightness even further does the trick, but at the cost of making the laptop unusable but in a dark room.
     
  10. aleni macrumors 68020

    Joined:
    Jun 2, 2006
    #10
    i can use my 11" for 6.5 hours until it dies. yesterday i installed coolbook and reduced the voltage settings. now i can squeeze about 7.5 hours on a single charge. other than the weight, the battery life on my 11" is one of the most appreciated feature for me.

    i installed clicktoflash, and only use brightness at about 20% since i never use it on bright place. bluetooth is always off too.

    how about you nstalling coolbook? it might helps battery life. it's really worth $10
     

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