new uMBP -- odd battery stats

Discussion in 'MacBook Pro' started by daver.cl, Jun 16, 2009.

  1. daver.cl macrumors member

    Joined:
    Jun 10, 2009
    #1
    hey folks,

    just got my mid-2009 uMBP today. i calibrated the battery, and right now at 100% charge with >100% health, it's reporting only 4 hrs, 20 minutes on a full charge. is something wrong here? also, why is my mac 6 weeks old? thanks.

    (pic attached)
     

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  2. ryannn macrumors newbie

    Joined:
    Jun 8, 2009
    #2
    What's your screen's brightness at, along with your keyboard's backlight? If they're at full like I'm assuming that'll significantly reduce the battery's life. Going purely off the estimate is a bad idea, it fluctuates too much based on the current CPU load, etc. And just to note, the advertisements say the batteries last UP TO 7 hours, not at least 7 hours.
     
  3. Bigabouli macrumors member

    Joined:
    Oct 18, 2008
    #3
    hey, i'm new to mac - how exactly do you calibrate the battery?
     
  4. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #4
    By looking for "MacBook battery calibration" and finding: http://support.apple.com/kb/HT1490 .



    To the OP:

    The machine has to be old somehow, as Apple had to have some machines made, so they won't run into a shortage, as those are quite good machines and buying season for the new semester has begun. As Apple has only the ability to produce a finite number of MBPs per day, they had to create a stockpile, and your seems to be one of the first or middle batch.
     

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