battery is getting worse on my mbp

Discussion in 'MacBook Pro' started by jetjaguar, Sep 18, 2009.

  1. jetjaguar macrumors 68030

    jetjaguar

    Joined:
    Apr 6, 2009
    Location:
    somewhere
    #1
    my laptop is about 6 months old according to coconut battery.
    I havent used it much over the last 6 months .. just every now and then but since school started ive been on it alot. When I first got my laptop I calibrated my battery and I was getting around 7.5 hours of just surfing the web, chatting and being on youtube. Lately when it is fully charged i see only around 4 hours but if i watch a youtube video or something the time drops fast .. like it 20 min drops. I calibrated it the other day and no change ??
    coconut battery is showing 12610 mAH out of 13000 .. and its been like that ever since i got it ? Also I have never used the high performance video and my bluetooth is disabled
     
  2. airplaneman macrumors 6502a

    Joined:
    Jun 8, 2009
    Location:
    USA
    #2
    That's totally normal. For example, YouTube videos take up a lot of battery like you mentioned. How many charge cycles do you have? You should be around 80% once you reach 1000 charge cycles.:cool:
     
  3. jetjaguar thread starter macrumors 68030

    jetjaguar

    Joined:
    Apr 6, 2009
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    #3
    what about the max time .. started at 7.5 hours .. now at full charge its only 4:30:(
     
  4. omgitzjoie macrumors newbie

    Joined:
    Sep 4, 2009
    #4
    The time changes depending on what you are doing. My MBP is barely a week old. When I turn it on and just surf the web, it says like 7 hours remaining. The second I open a youtube video, it drops to 3-4 hours. Then I turn off youtube and it goes back to 6-7 hours.

    The time remaining is according to what you are doing now and it calculates how long the battery will last if you keep on doing what you are doing. It confused me at first.
     
  5. jetjaguar thread starter macrumors 68030

    jetjaguar

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    #5
    yea i know .. lately if im just on macrumors .. at 95% full .. i have 4hrs remaining .. weird
     
  6. airplaneman macrumors 6502a

    Joined:
    Jun 8, 2009
    Location:
    USA
    #6
    Well, there are many factors involved, such as the brightness of the screen and what apps you are running. Also, what is the battery's health (%)? #load cycles? All of these and many more issues will contribute to your total battery time.
     
  7. klee1987 macrumors regular

    Joined:
    Jun 20, 2009
    #7
    My 13 MBP is 4 months old.

    battery capacity fluctuates between 5449-5630,according to coconut battery.

    I have only calibrated it once to apple's specifications. I have lectures 3 days a week, 6 hours a day and on two of those days I don't have access to a power socket and at the end of those 2 days I have about 5-10% left.

    If you search the forum you'll find that mbp which have the highest capacities/ best health are those which go through regular charge cycles, even without regular calibration.....so that's what I'm doing. Don't leave it plugged in 90% of the time.

    The most amazing case I have seen is an ibook battery going thru 1000 cycles with 80+% capacity on a taiwanese forum.
     
  8. mrsir2009 macrumors 604

    mrsir2009

    Joined:
    Sep 17, 2009
    Location:
    Melbourne, Australia
    #8
    The computer calculates how much your battery will last if you keep doing what your doing. And videos take up tons of battery, web surfing takes up hardly any =)
     
  9. klee1987 macrumors regular

    Joined:
    Jun 20, 2009
    #9
    [​IMG]

    598 5221mAh 2008/08/18
    600 5215mAh 2008/08/20
    796 5282mAh 2009/01/10
    800 5286mAh 2009/01/13
    820 5201mAh 2009/02/03
    859 4372mAh 2009/03/12
    879 5060mAh 2009/03/27
    907 5133mAh 2009/04/17
    951 5195mAh 2009/05/21
    981 5113mAh 2009/06/18
    999 5092mAh 2009/06/28
    1000 5105mAh 2009/06/29

    It's all chinese....but you get the idea.

    oh yeah, i made a mistake - it's a Macbook, not a ibook
     
  10. jetjaguar thread starter macrumors 68030

    jetjaguar

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    Apr 6, 2009
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    somewhere
    #10
    coconut battery is saying it has 11 load cycles
     
  11. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #11
    Your battery sounds pretty normal to me. What's the percent capacity remaining?
     
  12. jetjaguar thread starter macrumors 68030

    jetjaguar

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    Apr 6, 2009
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    somewhere
  13. SMC1991 macrumors member

    Joined:
    Sep 18, 2009
  14. jjahshik32 macrumors 603

    Joined:
    Sep 4, 2006
    #14
    Whoa my 17" 2.8GHz unibody mbp's battery maH at full charge capacity is 12662.
     
  15. J&JPolangin macrumors 68030

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    Jul 5, 2008
    Location:
    Thule GL @ the TOW
    #15
    ....batteries degrade over time...

    Use it, keep an eye on it, but don't obsess over it or it will drive you crazy...

    If it gets to the point where applecare considers it to be defective, get it replaced.

    Happy laptoping...:D

    ...APM, what'cha talking about:D
     
  16. airplaneman macrumors 6502a

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    Location:
    USA
    #16
    :) You mean obsess?:)
     
  17. mrsir2009 macrumors 604

    mrsir2009

    Joined:
    Sep 17, 2009
    Location:
    Melbourne, Australia
    #17
    Yeah, batteries do degrade over time, my old iBook battery lasted for 10 minutes before I got rid of it. The machine and battery were both 5 years old...:eek:
     

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