Battery is dying?

Discussion in 'MacBook Pro' started by Archive, Feb 8, 2008.

  1. Archive macrumors member

    Aug 23, 2007
    Hi there,

    I have had my Macbook Pro for 10 months now. The battery was at 99% health up until a month ago or so.

    Two days ago I saw that the battery health was at 97%, which was in order I figured.
    Yesterday it hit 81%, later in the day it was 79% and now (like 5 hours later) the health is at 70%.

    I checked it with Coconut Batter and iStat Pro and confirmed the mAh number with that of the system profiler.

    My battery has had 20 cycles and is not eligible for the exchange program (Macbook Pro Core 2 Duo, running leopard).

    Is there any way this is a false reading? Because it seems if this is going on my battery will be down to 0% health in no-time.

    Thanks for any advice.
  2. jeff3221 macrumors regular

    Nov 14, 2007
    DO you mean that is all it gets to when plugged in? If it is unplugged, that means you have a great battery!
  3. paul.b.davis macrumors 6502


    Oct 24, 2007
    Over the hills and far away...
    Just thought some humor would lighten up your situation.

    I think he meant health, not power remaining
  4. Archive thread starter macrumors member

    Aug 23, 2007
    Yep, I meant battery health.

    After I reset the PMU on my Macbook it went back to 81%, so I guess it hasn't been displaying the correct values after all.
  5. squaremon macrumors regular


    Jan 18, 2008
    I have similar issue to that with my mba. my battery health was 97% the first day I got it. after 2-3 times of charging my battery health starts to drop. Not sure if this is normal:(
  6. Archive thread starter macrumors member

    Aug 23, 2007
    Okay guys, something is seriously wrong.

    My battery health is now at 47% (2624mAh) after 23 cycles.

    Is this normal?
    Will Apple replace my battery?
    If they do, how do I prove to them over the phone mine's defective (no apple stores in Germany).
  7. KingYaba macrumors 68040


    Aug 7, 2005
    Up the irons
    It doesn't hurt to ask. Schedule an appointment with a Genius.
  8. Archive thread starter macrumors member

    Aug 23, 2007
    Unfortunately there are no apple stores in germany and thus no geniuses. The only alternatives are resellers like Gravis. But after screwing up my first gen MBP three times in a row resulting in Apple having to replace my machine I cannot risk bringing my otherwise working MBP there....

    I guess I'll see how far it drops and call apple when I've really not even got an hour of battery health left (I have applecare to 2010).
  9. markrivers macrumors 6502a


    Feb 9, 2008
    Valencia, California
    call apple to send you another battery.
    i'm not a fan of sending my MBP for repair either.
    who knows if it will have scratches or dirt on the screen or the keyboards.
    worse case scenario, just buy another battery from a 3rd party
    for your peace of mind
  10. aerove macrumors 6502


    Apr 3, 2007
    i had the same issue .. even my country didnt have a reseller.. so i told the service center guys to order the battery and call me up when they get the replacement .. i left mine there .
  11. thechidz macrumors 68000


    Jul 25, 2007
    New York City
    Are you kidding me?
  12. markrivers macrumors 6502a


    Feb 9, 2008
    Valencia, California
    i guess you're battery is making up for lost times.. the 10 months that it has been "misread" by your istat
  13. Archive thread starter macrumors member

    Aug 23, 2007
    Just wanted to mention.

    My battery is now at 95% health and 24 cycles.... God knows what's going on. I just won't worry about what a little widget tells me (doesn't seem to affect the battery anyway).

    Thanks for all the helpful insights!
  14. alphaod macrumors Core


    Feb 9, 2008
    Wow 24 cycles in 10 months...

    Well at that stage if the battery goes crazy, you can go to store and get it looked at. If it's defective they will replace it free as it's still under warranty.
  15. bov macrumors 6502

    Aug 21, 2007
    San Francisco
    why does your battery health matter so much to you anyways? you've only had to use your laptop unplugged 24 times over 10 months?! seems like most of the time you use it plugged in. :confused:

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