macbook 2012 battery capacity decreasing too fast

Discussion in 'MacBook Pro' started by mark1239, Sep 8, 2013.

  1. mark1239, Sep 8, 2013
    Last edited: Sep 8, 2013

    mark1239 macrumors newbie

    Joined:
    Aug 5, 2013
    #1
    Hi, today trying to check my battery status I've noticed that after only 23 cycles battery has lost 6.4% of its power capacity as you can see in the follow image.


    [​IMG]
    [​IMG]

    Is it normal a loss like that in just a month or is it a battery problem?

    What should I do?

    Thanks in advance.
     
  2. *Batman* macrumors member

    *Batman*

    Joined:
    Oct 2, 2012
    Location:
    Gotham City
    #2
    It does seem like its draining faster than mine.
     

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  3. nickandre21 macrumors 6502a

    Joined:
    Jun 21, 2012
    #3
    just drain the battery and fully charge it a few times, also do an smc reset.
    Sometimes the health just fluctuates if it still keeps dropping then get it to the genius bar for diagnosis.
     
  4. urbis macrumors newbie

    Joined:
    Jun 18, 2013
    Location:
    Leeds, UK
    #4
    Mine's exactly the same!

    Similar count too.
     
  5. magbarn macrumors 68000

    Joined:
    Oct 25, 2008
    #5
    Your battery spent too much time over the last year constantly plugged into the outlet without much 'exercise' Lithium batteries not only like exercise, but they also wear out faster if kept at 100% charge day in and day out.

    EDIT
    Oh nevermind, your laptop is only 1.5 months old. That's pretty fast wear!
     
  6. mark1239, Sep 9, 2013
    Last edited: Sep 9, 2013

    mark1239 thread starter macrumors newbie

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    Aug 5, 2013
    #6
    I think it's a "Battery health" bug , the macbook arrived in my house from Apple online shop the 14th of august, so it is only 3 weeks old, not 1.5 months.
     
  7. magbarn macrumors 68000

    Joined:
    Oct 25, 2008
    #7
    Is yours by chance a 2012 MBP 13? Mine when brand new was approx 5500 or so, it never was at 5770 (design capacity). All my other macbooks are at or above their capacity so maybe it's a 2012 MBP 13 thing?
     

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  8. mark1239 thread starter macrumors newbie

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    Aug 5, 2013
    #8
    yes it is a 2012 mbp 13'', I didn't make a test when it arrived so I don't know if it was originally at 5770, but 7-10 days ago I'm pretty sure the currect capacity was at 97-98%, now 93.6%, similar to yours but mine is 3 weeks old, yours is 15 months old.
     
  9. Krazy Bill macrumors 68030

    Krazy Bill

    Joined:
    Dec 21, 2011
    #9
    Given the age of some of your machines, I don't see how you guys get by with such a low cycle count. You must never unplug them?

    I was at 80% capacity with 200 cycles after 12 months. I change my battery about every 14 months or so. But I suppose I'm more mobile than most.
     
  10. mark1239 thread starter macrumors newbie

    Joined:
    Aug 5, 2013
    #10
    200 cycles already 80%?

    Here ( http://www.apple.com/batteries/notebooks.html ) I read " The built-in battery of your MacBook Pro or MacBook Air is designed to deliver up to 1000 full charge and discharge cycles before it reaches 80 percent of its original capacity."
     
  11. Cassady, Sep 9, 2013
    Last edited: Sep 9, 2013

    Cassady macrumors 6502a

    Cassady

    Joined:
    Jul 7, 2012
    Location:
    Sqornshellous
    #11
    Geez, seeing these gives me the aches... I have Battery-Health installed as well. 170 odd cycles after 1,3 years - but mine has already lost plenty of "original" juice... It's almost reaching the point where I want to uninstall B-H, so as to properly bury my head in the sand, and celebrate denial...

    Will pop up a screengrab when I get back on my laptop. How on earth do you all manage those stats??

    [EDIT:]

    Shucks. It's actually worse than I remember... [hello, denial].

    Battery Health - Stats at 9.00.32 PM.png

    How is a Battery Cycle measured? Seeing the above - is this normal, or should I start becoming a bit more careful?

    Would really appreciate some advice...
     
  12. Krazy Bill macrumors 68030

    Krazy Bill

    Joined:
    Dec 21, 2011
    #12
    Yes, I've read that.

    I have a new one now and it's at 96% out of the box on cycle 1. I'm discharging/recharging trying to break it in. 3 cycles now and still at 96%.
     
  13. urbis macrumors newbie

    Joined:
    Jun 18, 2013
    Location:
    Leeds, UK
    #13
    Just checked mine, it's gone up to 95% today, after being at 93.9/94.0% for a few weeks.

    Bought it in June, and it's now showing 24 cycles.

    Age is apparently 7.2 months, but the laptop is only 3 months old.
     
  14. iPhonesandMacs macrumors regular

    Joined:
    Oct 11, 2012
    #15
    Here's my 13" 2013 retina
     

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  15. Spink10 macrumors 601

    Spink10

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    Nov 3, 2011
    Location:
    Oklahoma
  16. Cassady macrumors 6502a

    Cassady

    Joined:
    Jul 7, 2012
    Location:
    Sqornshellous
    #17
    Man, that sucks. Battery Condition in mine is reported as "normal" under Settings. But when I look at others here, then I think not.

    Would a battery reset help things?
     
  17. nickandre21 macrumors 6502a

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    Jun 21, 2012
  18. mark1239 thread starter macrumors newbie

    Joined:
    Aug 5, 2013
    #19
    now battery current max is 92.5% of the original, with 26 cycles.

    Yesterday I was in a Apple centre they made an Apple test booting the pc with a button that I don't remember and the battery results "ok" and they said "there are no problem with the battery, it's normal".

    Wow if it's normal that in less than a month that battery has lost almost the 10% of its duration I'm very confounded and I've regretted to have bought a macbook pro.
     
  19. Azathoth macrumors 6502a

    Joined:
    Sep 16, 2009
    #20
    Those % are not accurate to within 1%! It's normal for this to fluctuate by a few percent *AND* capacity drop is not a linear process versus battery age.

    The measurements might have a high precision, just not a high accuracy.

    Your battery is almost certainly fine.
     
  20. macgeek18, Sep 11, 2013
    Last edited: Sep 11, 2013

    macgeek18 macrumors 68000

    macgeek18

    Joined:
    Sep 8, 2009
    Location:
    Northern California
    #21
    My 2012 MacBook Pro 13".
    I just noticed battery heath says my Mac is older than cocunutbattery and it's at 100.5% :eek:
     

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  21. raptor402 macrumors 6502

    Joined:
    Jun 30, 2011
    #22
    Hey,

    After over 900 cycles, I seem to faring pretty well on paper. However, battery health turns out to be just a number when you check real-life usage. I get not more than 2 hours of battery running chrome and a video. There's very little CPU usage and fans remain at 2000 RPM.

    The battery health shouldn't be an issue as long as your battery is giving you the life it should.

    Regards
    Raptor
     

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