new mbp 15 2011 battery stuck at 99%

Discussion in 'MacBook Pro' started by jvmxtra, Mar 8, 2011.

  1. jvmxtra macrumors 65816

    jvmxtra

    Joined:
    Sep 21, 2010
    #1
    I already mroogle'd it but didn't see one for 2011...

    When I fully charge the mbp, it gets stuck at 99% and adapter plug indicator never goes green.

    I am going to let it drain all the way and charge again but this is crazy.. Do I have a case to return it and get a new one? I don't care what apple says(99% is normal according to some article from apple) I paid all this money and I should get same machine as everyone else who paid the same money.. Is anyone experiencing the samething?? This is crazy(first day!!)
     
  2. Pballer110 macrumors 6502

    Joined:
    Nov 3, 2010
    #2
    Try calibrating the battery. What you have to do is let the battery die then leave it off for 8 hours then plug it in and leave it plugged until it's fully charged. That should fix it.
     
  3. ECUpirate44 macrumors 603

    ECUpirate44

    Joined:
    Mar 22, 2010
    Location:
    NC
    #3
    Its completely normal. Dont worry about it!

    This should answer most if not all of your battery questions. Compliments of GGJstudios. Apple Notebook Battery FAQ
     
  4. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #4
    This should answer most, if not all, of your battery related questions: Apple Notebook Battery FAQ

    Btw, the Mac doesn't always fully load the battery to 100%.
     
  5. ECUpirate44 macrumors 603

    ECUpirate44

    Joined:
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    #5
    Thats not the correct calibration method either.
     
  6. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #6
    It's perfectly normal for it to stop charging between 93% and 99%. This should answer most, if not all, of your battery questions:
    Read the link to learn how to properly calibrate a battery.
     
  7. dxerboy macrumors member

    Joined:
    Oct 28, 2007
    #7
    I say give your battery some time to get the "electrons flowing"...

    Mine only showed 96% the very first time it stopped charging because it was "full".

    I'd say give it a little workout--batteries like that. Let it get down to 30% before charging fully and see what happens. On it's second charge, that's what I did and hey presto - 100%.

    My bet is yours will be all good after that... :)
     
  8. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #8
    You don't need to go to 30% for that. Even 90-92% will do it. Read the Battery FAQ link to find out why.
     
  9. jman240 macrumors 6502a

    Joined:
    May 26, 2009
    #9
    These are lithium polymer batteries. They do not need "calibration." Doing the old calibration methods will actually hurt these newer batteries.

    The calibration thing came from the now ancient Nickel Cadmium batteries which had a bad habit of "forgetting" where their max and min charge positions were. That is why the whole "drain the battery to calibrate it" thing came into being. New batteries do not operate like this. They do not forget and they do not forgive. Draining them will cause them to loose some capacity.

    I really wish this calibration idea would die =)
     
  10. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #10
    That is false. They do require calibration to ensure readings are accurate, and it doesn't hurt the battery.
    You're confusing the issue of the "memory effect" of NiCd batteries with the need for calibration of the new ones. They are completely different. Read the FAQ I posted.
     
  11. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #11
    Then Apple does lie about this?
    http://www.apple.com/batteries/notebooks.html
     
  12. ECUpirate44 macrumors 603

    ECUpirate44

    Joined:
    Mar 22, 2010
    Location:
    NC
    #12
    Terribly misinformed. Read the FAQ and links posted above. The calibration method is necessary.
     
  13. jman240 macrumors 6502a

    Joined:
    May 26, 2009
    #13
    That's software calibration. I'm talking about the typical definition I hear about calibration being drain then recharge fully being completely wrong and bad for the batteries. Better to tell people they don't need to do anything IMO.

    Yes and no. I know the difference. I also think that through normal use of the laptop that people will inadvertently "calibrate" it anyway so there is no need to force it.
     
  14. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #14
    The most accurate thing you've said so far is "IMO". Calibration does, indeed, involve completely draining the battery, and it is not bad for the battery. It is recommended by Apple and required for accuracy in battery readings.
    Again, you don't understand the calibration process. Read the FAQ and learn how to properly calibrate a battery. People won't "inadvertently" or "accidentally" calibrate their batteries through normal use. It must be done intentionally and correctly.

    The memory effect of NiCd batteries had to do with partial discharges and recharges, which isn't a problem with lithium polymer batteries. Calibration deals with accuracy in reporting battery readings. They are not related in any way.
     
  15. jman240 macrumors 6502a

    Joined:
    May 26, 2009
    #15
    Let me guess, you read this line "Apple recommends charging and discharging its battery at least once per month" and figured it meant a complete discharge. They just mean don't leave it on the charger 24/7.

    They even warn you about totally discharging the battery "If you store a battery when it’s fully discharged, it could fall into a deep discharge state, which renders it incapable of holding any charge. "
     
  16. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #16
    No, I'm not referring to that. Read the FAQ.
    That's talking about storing a battery, not using it. Rather than continuing to post inaccuracies, you really should take a few minutes and read the FAQ so you'll have factual information.
     
  17. jman240 macrumors 6502a

    Joined:
    May 26, 2009
    #17
    You know what, I'm looking at the wrong thing.

    http://www.apple.com/batteries/

    I took the part about standard charging a little too literally I think. Basically I read that the battery has X number of cycles in its life and you shouldn't use them up. That was my understanding. My B.

    I did read somewhere that newer batteries aren't as fickle as they're made out to be but I can't seem to find the article. It did have a lot of chemical formulas and information about depth of discharge. Anyway, my bad.

    EDIT:
    found the site http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
    I was remembering this and put it backwards "Lithium-ion does not need to be fully charged; a partial charge is better."
     
  18. iLog.Genius macrumors 601

    iLog.Genius

    Joined:
    Feb 24, 2009
    Location:
    Toronto, Ontario
    #18
    That's exactly what they mean and who's storing their battery when it's fully discharged? Sure it will fall into a deep discharge state but when people see their battery depleted, they're going to their charger not leaving dead.

    Apple's kbase article specifically outlines the whole calibration process.

    http://docs.info.apple.com/article.html?path=Mac/10.6/en/9036.html


    Read step 4. It's pretty clear that the calibration process requires you to fully deplete your battery.


    Yes calibrating a battery will use up one whole cycle but it's not like you're doing it frequently. From the kbase article, it says once every two months. So in a year, you're using 6 cycles out of 1000 (for built-in batteries) or 300 (for removable batteries). That's a very small number if you look at the total life of a battery.
     
  19. shootingrubber macrumors 6502

    Joined:
    Mar 7, 2009
    #19
    Note the word "store". Storing implies a prolonged period of time.

    Apple recommends calibrating the battery which does involve completely draining the battery. It's not bad for the battery at all.
     
  20. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #20
    The batteryuniversity site has some good information, but a lot of it doesn't apply to Apple batteries. Apple is a much more reliable source for relevant and accurate information related to Apple notebook batteries. The Battery FAQ I posted really will answer most questions about Apple batteries. I encourage you to read it.
     
  21. jvmxtra thread starter macrumors 65816

    jvmxtra

    Joined:
    Sep 21, 2010
    #21
    Hey guys, thanks a lot for the info and honestly bit of courage.. I LOVE this lappie and want it to stay w/ me.. so I am caliberating now(part where it needs to sleep for 5 hours).. so later on around 9pm.. I will turn it back on and see..
     
  22. iLog.Genius macrumors 601

    iLog.Genius

    Joined:
    Feb 24, 2009
    Location:
    Toronto, Ontario
    #22
    It's good information to know but don't get too wrapped up in it. Just know that every month or two, you calibrate it. Other than that, don't worry about using your Mac on battery, just use it as it's meant to be used and your battery should be fine.
     

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