Is this normal? Macbook Pro Battery..

Discussion in 'MacBook Pro' started by eyemacg5, Jul 28, 2008.

  1. eyemacg5 macrumors 6502

    eyemacg5

    Joined:
    Sep 14, 2006
    Location:
    Derbyshire, England
    #1
    [​IMG]

    It lasts a lot shorter amount of time now that a few months ago...
    Can I take it back and get a new battery?
    Is there a percentage that they consider a battery "broken"?
     
  2. design-is macrumors 65816

    design-is

    Joined:
    Oct 17, 2007
    Location:
    London / U.K.
    #2
    Looks a bit duff to me. Give Applecare a call before your year runs out :)
     
  3. Beau10 macrumors 6502a

    Joined:
    Apr 6, 2008
    Location:
    Downtown San Diego
    #3
    The rule is if it's showing < 70% in under a year or 300 cycles they will give you a replacement.

    So looks like you're getting a new battery. :cool:
     
  4. matperk macrumors 6502

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    Location:
    Milwaukee, Wisconsin
    #4
  5. Apple Ink macrumors 68000

    Apple Ink

    Joined:
    Mar 7, 2008
    #5
    Dont worry.... CoconutBattery is as reliable as a Dell running Vista!

    See my reports for example!:
     

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  6. 88888888 macrumors 6502a

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    May 28, 2008
  7. Insulin Junkie macrumors 65816

    Insulin Junkie

    Joined:
    May 5, 2008
    Location:
    Mainland Europe
    #7
    Mine is telling me that my current battery capacity is higher than the original battery capacity...
     
  8. eyemacg5 thread starter macrumors 6502

    eyemacg5

    Joined:
    Sep 14, 2006
    Location:
    Derbyshire, England
    #8
    I guess, but I'm noticing it a lot its ridiculous how short the battery life is compared to the original battery life.
     
  9. xxMacAttackxx macrumors member

    xxMacAttackxx

    Joined:
    Jun 23, 2008
    Location:
    Chicago
    #9
    Because you are under your one year, they will for sure replace the batter.. Also you still have time to get apple care! Always worth it imo.. Many people say its not until they actually have a problem...
     
  10. Apple Ink macrumors 68000

    Apple Ink

    Joined:
    Mar 7, 2008
    #10
    The simplest yet most effective way to tell is: Apple Meu (in Menubar)|About this Mac|More info|Power... under Battery, check the condition..... if its good, you're all fine!:D
     
  11. eyemacg5 thread starter macrumors 6502

    eyemacg5

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    Sep 14, 2006
    Location:
    Derbyshire, England
    #11
    It says "Check Battery"
     
  12. Apple Ink macrumors 68000

    Apple Ink

    Joined:
    Mar 7, 2008
    #12
    Run to the Apple Store as fast as you can! You're completely legit to recieve a new battery free of cost (given that you're still under 12 months)
     
  13. eyemacg5 thread starter macrumors 6502

    eyemacg5

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    Sep 14, 2006
    Location:
    Derbyshire, England
  14. Beau10 macrumors 6502a

    Joined:
    Apr 6, 2008
    Location:
    Downtown San Diego
    #14
    Original battery capacity is a bit of a misnomer... it's what the battery is rated at according to the microchip inside. But the actual cells in the battery can come from the factory with more or less capacity.

    So it saying your battery is above normal is a perfectly normal condition, be happy you have a very strong battery :)
     
  15. pdxflint macrumors 68020

    pdxflint

    Joined:
    Aug 25, 2006
    Location:
    Oregon coast
    #15
    I noticed my battery capacity is now 94% of original, and several days ago it was 98%. I have been using the MBP normally - usually plugged in, but some of the time on battery. I don't always run it down to the limit, but have cycled it a couple of times all the way down, then recharged. My MBP is 4 months old. I'm concerned that it may be degrading faster than I would like it to. Can the battery be built back up by deep cycling it a few times?
     

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  16. Beau10 macrumors 6502a

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    Apr 6, 2008
    Location:
    Downtown San Diego
    #16
    My battery dropped to 95% by 15 load cycles, and has vacillated between 94-95 ever since (now at 110+ cycles). It seems batteries may drop off a bit rapidly at first and then settle.

    Calibrating won't literally build the battery back up, but it will sync the battery's processor more closely to its actual capacity (IOW, your readings will be more accurate).
     
  17. aquajet macrumors 68020

    Joined:
    Feb 12, 2005
    Location:
    VA
    #17
    No. Lithium type batteries don't suffer from memory effect. No conditioning is necessary, such as with NiCad types.
     
  18. Beau10 macrumors 6502a

    Joined:
    Apr 6, 2008
    Location:
    Downtown San Diego
    #18
    By conditioning you're not altering the chemistry, but you can increase the lifetime (or decrease it) because the microchip in the battery will be better calibrated to its actual capacity. If it is initially reading low, then reading more accurately high does in fact increase lifetime.
     
  19. mrblu macrumors newbie

    Joined:
    Sep 19, 2007
    #19
    This is so not true! My MBP battery showed as good, 65 cycles on a nine month old battery, but the computer shut off - no warning, no saves - after 23 minutes of unplugged use from a full charge! Apple gave me a new battery with no questions asked. My only complaint is that it is another Sony battery with a similar serial number to the failed one. So I live in fear of another failure!

    All of you with bad batteries should take them back for new ones! That's what a warranty is for!

    Peace!

    mrblu
     
  20. pdxflint macrumors 68020

    pdxflint

    Joined:
    Aug 25, 2006
    Location:
    Oregon coast
    #20
    update:

    Well, a couple of days ago I just ran my MBP on battery during the day, and at home used it until it hit 5% charged, and shut it down. The next morning I reconnected the power supply and charged it back all the way. I just checked the status, and it seems back to 99% capacity. I'm happy. :)
     

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