Battery gauge

Discussion in 'MacBook Air' started by mattpreston11, Oct 26, 2010.

  1. mattpreston11 macrumors 6502a

    Nov 9, 2007
    Anybody else's totally off? in terms of time remaining. I believe its calculated constantly based on your usage, but sometimes on my 11'' it reads 8 hours.

    This is my first apple laptop so i'm not sure if they are all like this?
  2. Stingray454 macrumors 6502a

    Sep 22, 2009
    Yes, it uses some kind of average power consumption over the last X minutes I believe. If you start up the computer it may read 5 hours, but if you start a 3d game that takes lots of processing power it may drop to 1h or less (since playing that game takes a lot of power and it will only last for about 1h when playing). And if you then quit the game and leave the computer idle and the screen turns off, you'll probably see way more than 5 hours when resuming work. It's more of an indicator of "if you continue doing what you're doing right now, the battery will last this long" :)
  3. Hisdem macrumors 6502a


    Jul 3, 2010
    Boca Raton, FL
    It refreshes about every 30 secs or so based on your usage, so don't be surprised if it goes from like 8 hours to 2 suddenly. Just enjoy your new MBA :cool:
  4. mattpreston11 thread starter macrumors 6502a

    Nov 9, 2007
    fair enough.

    How are people finding their batteries? obviously depends on usage but anybody getting near to the 5-7 hours as advertised?

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