A couple more Newbie questions (when to calibrate the battery)

Discussion in 'MacBook Pro' started by toydriver00, Dec 2, 2006.

  1. toydriver00 macrumors newbie

    Nov 26, 2006
    I have tried the search function with no luck. When and why should I calibrate the battery? My battery discharged to 98% while the battery was plugged in. I called Apple and they said that it will never reach 100% again. The more it cycles the less the capacity is. Will Calibrating it help?


  2. toydriver00 thread starter macrumors newbie

    Nov 26, 2006
    Thanks, should I do this with the Macbook when I first get it?
  3. mannix87 macrumors 6502

    Nov 16, 2005
    in the southeast
    the manual suggests that you should do the calibrating during the first few weeks of purchase of the MB/MBP
  4. toydriver00 thread starter macrumors newbie

    Nov 26, 2006

    I calibrated it and ended up with the same problem, it would only read 98%. I took it to the Apple store locally, and they looked at it for about 20 minutes, and then gave me a new battery. We will see how this one works.
  5. mr_matalino macrumors 6502a


    Oct 14, 2005
    That's just how rechargeable batteries are. They will never reach 100% charged for their entire life. Try buying rechargeable AA batteries. Same thing...after being used for a bit they will never hold a full charge. Calibrate once a month and enjoy the computer...
  6. Elisha macrumors 6502a


    Nov 21, 2006
    mine showed 98% after calibration. but leaving it off overnight made it 100% again.
  7. toydriver00 thread starter macrumors newbie

    Nov 26, 2006
    Even after mine sat overnight, it would still only read 98%. That was even after calibration!!!
  8. mfInc macrumors member

    Nov 19, 2006
    Toronto / Hamilton, ON (CAN)
    Mine is at 93%, I have not done the above yet.
  9. Brambo macrumors newbie

    Dec 21, 2006
    Leiden, Holland
    Battery capacity dropping already after 7 weeks

    I've got my MBP C2D for 7 weeks. Battery capacity used to be at 5500+. Since a day or so it is dropping, see picture.

    Calibrating didn't help, charging overnight also didn't change anything.
    Seems to me the battery capacity is going down rather quick, too quick if you ask me. Any ideas on what to do?

    Attached Files:

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