low charged battery problem on macbook pro 17

Discussion in 'MacBook Pro' started by prphry, Jun 22, 2009.

  1. prphry macrumors newbie

    Joined:
    Jun 22, 2009
    #1
    heya

    i have a new 17 inch MBP - the 2.66 (ok, not new, bought it 3 weeks before the new, new ones were released) - the 'breakthrough' battery is fully charged... but when i look at the time remaining, it is not 8 hours - more like 6... any ideas ?

    do i need to run it down to zero and re charge ?

    i understand these batteries are non removable, so i'm pretty sure the battery is the newest one available - mentioning this as it was bought on ebay (and yes, it was brand new)

    thanks -> P
     
  2. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #2
    Did you calibrate it, and what are you running when it tells you that you have 6 hours left? Obviously battery life depends on how much power your machine is using at any given time...
     
  3. prphry thread starter macrumors newbie

    Joined:
    Jun 22, 2009
    #3
    i'm usually running indesign and photoshop and safari ? sometimes i run illustrator and acrobat too ?

    i havent calibrated the battery - will do so now and see if that makes a difference

    cheers -> P
     
  4. u49aa2 macrumors 6502a

    u49aa2

    Joined:
    Nov 3, 2008
    Location:
    Between Heaven and Hell
    #4
    See, the 8 hours theory is for running word processing, surfing the net wirelessly, and the brightness set to half of full brightness. So doing anything more than that won't give you the 8 hours.
     

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