Does this seem normal? Battery related

Discussion in 'MacBook Pro' started by GRN99EX, Jun 28, 2008.

  1. GRN99EX macrumors member

    Mar 10, 2008
    South Jersey
    15" MBP Penryn

    4 Months old

    23 cycles, 86% health

    I have calibrated it at least once a month, and after calibrating it overnight last night, the health dropped from 92% to 86%.

    Is this something I should call Apple about, or should I just try calibrating it again to see if the health comes back? I have a white MB, that is 5 months old. I calibrate it around the same time as the MBP, and the health on it is 98%.

    Any input would be appreciated.

  2. newbie jnr macrumors member

    Mar 10, 2008
    I've got the same vintage 15" MBP (base model)

    49 Cycles

    in the last two days it's health has gone 95%>50%>65%>94%>80% and currently it's 95%

    This dip was after using it on mains power for a couple of days, using it on battery has brought it back up.

    I calibrated it only about a week ago.

    A bit odd
  3. jhamerphoto macrumors regular

    Oct 26, 2007
    Battery health fluctuates quite a bit. I've never calibrated mine over the year that I've had it (2.16 MBP) and it's at 92% health after 80 cycles.

    Just completely cycle the battery a time or two, sometimes that helps.

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