Help with battery troubles...

Discussion in 'MacBook Pro' started by rcf-dds, Dec 27, 2009.

  1. rcf-dds macrumors member


    Jul 31, 2009
    Cleveland & Columbus, OH
    Battery on my 19-month-old 15" Penryn MBP has been acting up for the past month or so. Here are my symptoms:
    - shuts off instead of sleeps when running off battery; usually this happens within 5 minutes if there is any activity--if i leave the computer alone it will go into sleep mode or at least last much longer
    - obviously wrong readings displayed percentage-wise and time-wise when on battery; lights on battery often show enough charge to power up MBP but still does not turn on
    - no consistent 'trigger' percentage that shuts it down; rather it coincides with activity (though it never makes it below 30% or so)
    - system profiler --- 374 cycles :eek:, condition GOOD (few days ago it read POOR)
    - maximum battery charge: 655336 mAh (WTF?); original 5600
    - perfectly fine on AC

    I have tried calibrating, but not sure it was done properly as I could not drain the battery fully without the computer shutting off on me (won't turn back on unless plugged in). Reset PRAM.

    I'm wondering if I should go ahead and shop for a new one or if I can try some other solutions. Also worried if all of this shutting down/starting back up is harmful to my (beautiful, newly-purchased 500GB) hard drive.
  2. m85476585 macrumors 65816

    Feb 26, 2008
    You need a new battery. Shutting down won't harm the hard drive, but it might corrupt your data.

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