Macbook battery looses capacity after calibration?

Discussion in 'Mac Pro' started by case11, Jul 30, 2006.

  1. case11 macrumors newbie

    Jul 30, 2006
    Last night I calibrated my battery on my Macbook 13" with the following procedure.

    1. Charged the battery 100%
    2. Let the chord stay for 1h.
    3. Disconnected the chord and let it drain the battery completetly (turned off sleep function)
    4. Left it uncharged over night (ca 7h)
    5. Recharged the battery this morning

    Before this calibration the battery capacity was 5155 mAh (28 cycles) and after it was only 5143 mAh! Furthermore, the battery stops charging when it reaches 5129mAh. (Apple battery meter says 100% but cocunut says 99%).

    Does anyone have an explanation or advice to not repeat this with the next calibration?
  2. aaron.lee2006 macrumors 65816


    Feb 23, 2006
    Ontario, Canada
    Battery should have sat connected to charger for a least 2 hours according to Apple fr my MacBook Pro. I still have't calibrated my battery :)
  3. xfiftyfour macrumors 68030


    Apr 14, 2006
    Clemson, SC
    The calibration probably didn't cause the loss in capacity - the battery probably wasn't reporting properly and after you calibrated, it corrected itself.

    edit: here's a thread where someone had the same question as you.
  4. Glen Quagmire macrumors 6502a

    Jan 6, 2006
    Loose capacity. Sounds troubling. I much prefer it when things lose capacity. Far easier to deal with.

Share This Page