UMB Battery Life?

Discussion in 'MacBook' started by courboy, Oct 5, 2009.

  1. courboy macrumors regular

    Joined:
    Mar 27, 2009
    #1
    Hi,

    We have 4 UMB's in the family and all were being used at the same time. The battery life on my laptop however, is far lower than any of the others (they are all the same age). When I disconnect it from the power adapter with full charge, I get around 1hr 40mins battery life out of it. This surely cannot be right.

    Firstly, is there a way I can make the battery life longer? The computer is only about 10 months old. If not, do you think Apple would replace the battery under AppleCare?

    Thanks in advance,

    Adam
     
  2. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #2
    Your battery life is probably shorter because of usage, not because you have a faulty battery. What do you use your computer for?
     
  3. courboy thread starter macrumors regular

    Joined:
    Mar 27, 2009
    #3
    Well I use it as my main computer but it's plugged into the mains practically all the time as it's on my desk. I only use it on rare occasions to take it downstairs.

    The thing is that everybody else uses their Macbook in exactly the same way and their battery life is at least double of mine - strange!
     
  4. Mexbearpig macrumors 65816

    Mexbearpig

    Joined:
    Dec 26, 2008
    Location:
    Here
    #4
    How often is this?

    Every now and then you should run off battery power. To keep your battery good you should keep the ions moving. With just having it sit at 100% and still charging doesnt do that.
     
  5. testcard macrumors 68020

    testcard

    Joined:
    Apr 13, 2009
    Location:
    Middle England
  6. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #6
    You kind of answered the question...

    I have a hard time believing that "everybody else uses their Macbook in exactly the same way" - you are on the same websites, running the same applications, playing the same music, and watching the same movies at all times and your battery life is shorter than the rest?

    Is it actually shorter (meaning you have tested your machine and another one side by side and yours lasts 1h 40m while the others last 3h+) or are you just going by the timer in the menu bar?
     
  7. courboy thread starter macrumors regular

    Joined:
    Mar 27, 2009
    #7
    Sorry, I don't literally mean we use it in exactly the same manor, of course this is not realistically possible. What I meant was we all keep each Macbook connected to the mains charger about 90% of the time and they are generally used for at least 8 hours each day. The applications used, website browsed and music played, are obviously different on each laptop.

    Have tested them next to each other and mine is significantly less battery life. This was performed with normal internet browsing on each computer, same display brightness, keyboard illumination etc.
     
  8. cluthz macrumors 68040

    cluthz

    Joined:
    Jun 15, 2004
    Location:
    Norway
    #8
    Have you downloaded coconut battery to see if it holds full charge?

    Or you could type:
    Code:
    ioreg -l -w0 | grep Capacity
    into terminal and see what it posts

    Does DesignCapacity and MaxCapacity huge differences?
    If so, your battery isn't good anymore.

    (MaxCapacity/DesignCapacity)*100% = Battery health
     
  9. courboy thread starter macrumors regular

    Joined:
    Mar 27, 2009
    #9
    Had never heard of Coconut Battery, but downloaded it on your advice and the output is attached to this. Doesn't look to me as though there are any problems, at least using this program?
     

    Attached Files:

  10. Richard1028 macrumors 68000

    Joined:
    Jan 8, 2009
    #10
    After 10 months, I can only get about 1:30 on mine. It's at 85% capacity right now and I've calibrated it religiously every month or so. Does this seem normal? What is Apple's warranty with batteries within the first year?
     

    Attached Files:

  11. cogsinister macrumors 6502a

    Joined:
    Aug 24, 2006
    Location:
    Fredericton NB Canada
    #11
    I have the same machine as you, 10 months old as well.....i have 84% capacity in coconut battery........but i have 321 loadcycles.....
     

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