Macbook battery?

Discussion in 'MacBook' started by alaner, Jun 6, 2009.

  1. alaner macrumors newbie

    Joined:
    Jun 6, 2009
    #1
    I just got my first Macbook!!!! :D:D:D:D:D:D

    Im SUPER happy to embrace OS X and leave Windows to bite the dust. While most of everything has been running smoothly, I've recently been running to a couple of problems. I seem to have noticed that my battery gets empty super fast. Upon checking the macrumors forums advice, I calibrated my battery with no changes in my user experience. I went into the system profiler and checked my power properties.

    Charge Information:
    Charge remaining (mAh): 3683
    Fully charged: No
    Charging: Yes
    Full charge capacity (mAh): 4139
    Health Information:
    Cycle count: 34
    Condition: Good
    Battery Installed: Yes
    Amperage (mA): 246
    Voltage (mV): 12295

    What do all these mean? Is my battery still okay? The Macbook claims up to 5 hours, but I havent even gotten to 4, even with just Word running. :confused::confused:

    All advice and help will be appreciated! Long live MacRumors!!!1
     
  2. celticpride678

    Joined:
    Feb 15, 2009
    Location:
    Boston, MA
    #2
    Well, your Mac does not think that the battery has a problem (health: good), but have you tried charging it all the way to 100%?
     
  3. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #3
    Your battery is more than fine, it has still its original capacity (Full charge capacity (mAh): 4139 - and you've already used 456mAh in the current session) and running a Unibody MacBook (I presume) for 5 hours will not happen, even if Apple states it as a fact. And running Word might be CPU intensive (I don't know anymore, as I have used iWork since the abysmal arrival of Office 2008).

    So when you get 3-4 hours out of it, then you don't have to worry.
     
  4. ziggyonice macrumors 68020

    ziggyonice

    Joined:
    Mar 12, 2006
    Location:
    Rural America
    #4
    When using your MacBook, there's a couple things Apple recommends to maximize your battery life.

    Do you use Bluetooth? If you don't, turn it off. You can do this by going into System Preferences > Bluetooth, and uncheck the box for "On". This can drastically help out.

    Another thing: try not to keep your brightness all the way up. Turning it down to about half-way can also help meet the five hours that Apple indicates.

    Finally, if you keep experiencing problems, look back at your System Profiler to see if the condition ever changes to "Check Battery". If it does, and if your Cycle Count is under 300, then Apple may replace the battery for you, as it may be defective.

    But otherwise, just try the above. Oh, and welcome to the Mac. :)
     
  5. alaner thread starter macrumors newbie

    Joined:
    Jun 6, 2009
    #5
    Thanks for all the help! Will definitely try to keep my battery in check!!!

    Im in the progress of charging it to full capacity. Funny thing is that I left it at full last night. I just removed the AC cord and placed my computer to sleep. Does sleeping use battery capcity?:D
     
  6. MultiFinder17 macrumors 68000

    MultiFinder17

    Joined:
    Jan 8, 2008
    Location:
    Tampa, Florida
    #6
    It does, but it does it very slowly.
     
  7. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #7
    As the above poster said, yes.

    The battery has to power the RAM, which holds all the currently running applications and associated data, so that when you wake it up, it's still there, almost instantly.
     
  8. alaner thread starter macrumors newbie

    Joined:
    Jun 6, 2009
    #8
    So much that it requires mo to charge for an hour to go back to full?
     
  9. NewMacbookPlz macrumors 68040

    NewMacbookPlz

    Joined:
    Sep 28, 2008
    #9
    The battery in the MB charges quickly at the beginning, then slows down as it approaches full. They can be quite slow for that last 15-20%.
     
  10. spinnerlys Guest

    spinnerlys

    Joined:
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    Location:
    forlod bygningen
    #10
    Yes, it uses in perfect condition of course 1-2% per hour when sleeping.
    On some MBs it uses 3-5% per hour.

    And as taking so much time to charge the battery when it is not that full, another poster (it escapes me who) once had a good image for that.

    Filling an empty glass with water will be fast until you reached the last quarter, where you have to pure water in slower and slower, so that no water skips out of the glass. It's the same with batteries, the fuller they are the slower the charge.

    You can also have a look at islayer.com for iStat Pro, a widget which shows you the current battery capacity and health
     
  11. alaner thread starter macrumors newbie

    Joined:
    Jun 6, 2009
    #11
    Thanks so much for that great analogy!!! I hope that I can keep my battery healthy. If not, will Apple Care cover it? I got the 3 year warranty just in case! :D
     
  12. spinnerlys Guest

    spinnerlys

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    Sep 7, 2008
    Location:
    forlod bygningen
    #12
    Apple will give you a replacement battery, if the battery has less than 80% health (80% of its original capacity) with less than 300 cycles.
     
  13. opinioncircle macrumors 6502a

    opinioncircle

    Joined:
    May 17, 2009
    #13
    How come they get away with it? Didn't anybody tried to sue Apple for false advertising?
    That's what happened here in Europe with the iPhone, they have a message that the connection speed might not be as quick as it seems to be in the ad.
     
  14. alaner thread starter macrumors newbie

    Joined:
    Jun 6, 2009
    #14
    oh wow! how generous! i'll try to keep that in mind. I think that false advertising has been a downfall of the consumeristic world. There's nothing we can do.....:D
     
  15. spinnerlys Guest

    spinnerlys

    Joined:
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    Location:
    forlod bygningen
    #15
    They have stated the things you have to do to achieve those 5 hours on their website in small print. As those are more than ideal circumstances and usage patterns, not a lot of people will achieve that usage of time out of one charge.

    They advertise the MBP battery (less mAh than the older white MB) with up to 4 hours, and I'm glad when I can get two and half out of them.
     

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