Macbook Pro Battery

Discussion in 'MacBook Pro' started by henhowc, May 25, 2009.

  1. henhowc macrumors regular

    Joined:
    Jun 12, 2007
    Location:
    Los Angeles, CA
    #1
    Before I start, I am aware that Apple's official stance on battery replacements is for batteries < 300 cycles. I am just interested in hearing about anyone who might have had a problem with their battery > 300 cycles w/ Applecare.

    The issue I'm having is that the battery fluctuates in its max charge rating from ~700 to ~2600. This issue started a few nights ago when my laptop just started powering down by itself with plenty of battery life left (anywhere between 70-90%). I've tried recalibrating and resetting SMC or PMU (whatever they call it now).

    Every time I power on the computer with the magsafe after one of these random shutdowns the battery shows up at 0% and the aformentioned ~700 max charge. Unplugging the magsafe after a few minutes time oddly enough results in the battery jumping back up to ~2600 max. For example, I pulled these two stats from System profiler while writing up this message:

    Charge Information: (After random shutdown)
    Charge remaining (mAh): 31
    Fully charged: No
    Charging: Yes
    Full charge capacity (mAh): 698
    Health Information:
    Cycle count: 503
    Condition: Fair
    Battery Installed: Yes
    Amperage (mA): 1032
    Voltage (mV): 12530

    Charge Information: (After random shutdown and a few minutes charging and then removal of magsafe)
    Charge remaining (mAh): 2121
    Fully charged: No
    Charging: Yes
    Full charge capacity (mAh): 2680
    Health Information:
    Cycle count: 503
    Condition: Fair
    Battery Installed: Yes
    Amperage (mA): 902
    Voltage (mV): 12540

    Is this basically an indication that my battery is totally shot or is there anything left that I might be able to try? If the former, have any of you had any luck with getting Apple to do a replacement even though your cycle count was above the norm?

    I've had this laptop about 1.75 years (22 months, coconut battery shows 47% health ugh...) and my cycle count seems to be way above what everyone else posts. That being said I don't own a desktop so I guess that could definitely account for things. For those who've had their MBPs for awhile, how long does the initial battery usually last you?
     
  2. cayenne65 macrumors newbie

    Joined:
    May 27, 2009
    #2
    Be carefull.

    |'ve got MBP 17" same age as yours. It took 2 weeks for battery to grow like that.
    No chance for free replacement.
     

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  3. dan5.5 macrumors 6502

    Joined:
    Oct 26, 2008
    #3
    I hope you are not using ur laptop with that battery in it...
    Apple might replace one of those... its very dangerous
     
  4. cayenne65 macrumors newbie

    Joined:
    May 27, 2009
    #4
    I'm not using it but I called Apple and they don't want to replace it.
     
  5. m85476585 macrumors 65816

    Joined:
    Feb 26, 2008
    #5
    Take it to an Apple store. They probably won't expect you to put it in your computer to see how many cycles are on it.
     

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