MB shuts down at 29% battery

Discussion in 'MacBook Pro' started by mainstreetmark, Nov 20, 2006.

  1. mainstreetmark macrumors 68020

    mainstreetmark

    Joined:
    May 7, 2003
    Location:
    Saint Augustine, FL
    #1
    Another new issue with my Blackbook.

    Several times in the last week it's decided to shut itself off when I had about 29% battery. Highly annoying for a fella like me who lives on a sailboat with limited power in the first place.

    When it happens, the battery indicator light on the batt itself blinks rapidly (0% charge). Sometimes when I plug it back in to power and let it sit a minute or two, it turns back on saying I have 30% battery.

    Yes, I reset the PMU already.
     
  2. CDailey macrumors regular

    Joined:
    Nov 13, 2006
    Location:
    Florida
    #2
    My refurb Core Duo MBP did the same thing to me the first day I got it. It hasn't happened since though.

    OT: Cool to see another user from Jville on here. :)
     
  3. mainstreetmark thread starter macrumors 68020

    mainstreetmark

    Joined:
    May 7, 2003
    Location:
    Saint Augustine, FL
    #3
    Yep - recently moved to Saint Augustine, though. :)
     
  4. Transeau macrumors 6502a

    Transeau

    Joined:
    Jan 18, 2005
    Location:
    Alta Loma, CA
    #4
    You may want to do a recondition on the battery.

    Let it run down until it turns itself off. Plug in some USB devices, like a cooling pad and mouse (anything that you can tell when it's powered). Let it sit like this until the devices are dead, and the battery wont even blink anymore. Then charge it (powered off) overnight.

    Also, reset your SMC. (Remove A/C and battery, press and hold the power button for 15~30 seconds)
     
  5. iBorg20181 macrumors 6502

    iBorg20181

    Joined:
    Apr 5, 2006
    Location:
    Minneapolis, MN
    #5
    My TiBook (well, my wife's TiBook, now that my MBP came!) has been doing that for the past 6 months, only it does it at about 40%! "Coconut Battery" shows that the battery has 92% original capacity, I've tried "reconditioning" the battery numberous times, resetting the Power Manager, all to no avail. Since she'll hardly ever use it on battery, it's not worth buying a new one, but I'd like to "fix it" if there's one to be had!

    iBorg
     
  6. huy macrumors member

    Joined:
    Apr 24, 2005
    #6
    I have the same problem! Any updates on your situation mate?

    I'm going to request a new battery from Apple on Monday.
     
  7. Mal macrumors 603

    Mal

    Joined:
    Jan 6, 2002
    Location:
    Orlando
    #7
    Same problem here, though mine was a good bit lower. Still didn't safe sleep when it got low or anything, just shut off. I was told to get a new battery (haven't yet) and possibly have the power management board replaced. I'd call Apple (if you've got telephone support) or just take it in to the closest Apple store or repair center.

    jW
     
  8. huy macrumors member

    Joined:
    Apr 24, 2005
    #8
    No telephone support as I don't have AppleCare and it's over 90 days. I've had mine for around 7 months (since the first MacBook was released, got this puppy immediately).

    I'll have to swing by an Apple shop then, bit of a hassle but I'm hoping it will be painless to ask for a new battery/won't have to prove that it is really failing by waiting for it to drain? I'm not lying about the problem so they are free to test it under the same conditions.
     

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