Poor macbook air battery life

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

  1. zstar macrumors member

    Nov 10, 2010
    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

    Sep 10, 2008
    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


    Jan 10, 2009
    do a calibration (once a month)

  4. aristobrat macrumors G5

    Oct 14, 2005
  5. HLdan macrumors 603


    Aug 22, 2007
    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


    May 16, 2008
  7. Jayomat macrumors 6502a


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

    Nov 19, 2010
    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

    Feb 11, 2006
    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

    Jun 2, 2006
    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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