Calibrating MacBook Battery

Discussion in 'MacBook' started by pinoyplaya, Mar 26, 2009.

  1. pinoyplaya macrumors regular

    Joined:
    Mar 16, 2009
    #1
    Hey guys, I fully charged my MacBook last night and I used it since this morning using only the battery. Followed the instructions so far.... now I only have 8% battery life left (0:21 remaining) according to the battery indicator. So it should die pretty soon. :)

    So once it goes to sleep I have to wait at least 5 hours and then recharge it to full capacity right?

    After I wait 5 hours of it being asleep, can I recharge while using the MacBook?
     
  2. DPA macrumors 65816

    DPA

    #2
    I left mine on E over night and plugged it in before I wen to the gym in the morning. It worked out perfectly (no pun intended). I think the support page on Apple Support says 12 hours but it's been a while since I've last done this. Come to think of it, I could use another calibration.

    David
     
  3. pinoyplaya thread starter macrumors regular

    Joined:
    Mar 16, 2009
    #3
    Here's my battery information from coconutbattery... which I just downloaded a minute ago. :)

    Edit: Age of my macbook says 3 months and I just got it yesterday or two days ago :(

    And is my battery good? 4446mAh?
     

    Attached Files:

  4. Peace macrumors P6

    Peace

    Joined:
    Apr 1, 2005
    Location:
    Space--The ONLY Frontier
    #4
    Where did you find the instructions at ? I couldn't find them for the new unibody Macbook.
     
  5. pinoyplaya thread starter macrumors regular

    Joined:
    Mar 16, 2009
    #5

    I think they are all the same instructions.
     
  6. DPA macrumors 65816

    DPA

    #6
    You Mac was not built the day you bought it, right? It is counting from the first time it was booted up and the OS was installed at the factory.

    David
     
  7. pinoyplaya thread starter macrumors regular

    Joined:
    Mar 16, 2009
    #7
    Oh I see. So I guess mine was built on around January :) woot lol

    Anyway... 3% left. I got a warning saying it will go to sleep to preserve memory or something like that.

    So anyway... I guess I will be surfing in 5 hours :)

    I should be able to use the MacBook while its charging right to calibrate the batter after 5 hours of it being asleep with no power left
     
  8. DPA macrumors 65816

    DPA

    #8
    You will be able to use the MacBook once the battery has reached 15% full.

    David
     
  9. belvdr macrumors 601

    Joined:
    Aug 15, 2005
    #9
    I think this calibration crap is hilarious. I've never calibrated any PC laptop battery yet they still hold up.
     
  10. DPA macrumors 65816

    DPA

    #10
    Calibrating is done, mainly, to calibrate the battery's computer so you can get an accurate approximation of how much charge your battery has left.

    David
     
  11. GfulDedFan macrumors 65816

    GfulDedFan

    Joined:
    Oct 17, 2007
    Location:
    Indiana
    #11
    Here's the official article about battery calibration.
     
  12. pinoyplaya thread starter macrumors regular

    Joined:
    Mar 16, 2009
    #12
    My Maximum Battery Capacity went from 4447 mAh to 4228 mAh after Calibrating the Battery :(

    Argh...
     
  13. lankox macrumors regular

    Joined:
    Jul 5, 2007
    #13
    As previously stated, the calibration produces a more accurate reading.
     
  14. pinoyplaya thread starter macrumors regular

    Joined:
    Mar 16, 2009
    #14
    Liked it better when it gave me false results haha :)
     
  15. pinoyplaya thread starter macrumors regular

    Joined:
    Mar 16, 2009
    #15
    Now it went back up to 4443 after I unplugged the power and plugged it back in lol. :)
     

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