MBP 15' Battery discharges to 95%

Discussion in 'MacBook Pro' started by rbmanian75, Jul 15, 2010.

  1. rbmanian75 macrumors member

    Mar 6, 2009

    MBP 15' mid 2010 battery discharges itself to 95% in 3 to 7 days and then charging again to reach 100%. The system is always connected to power source. Is this normal behavior with all the MBP's?
  2. GGJstudios macrumors Westmere


    May 16, 2008
    It shouldn't discharge at all when connected to the MagSafe power adapter. Check to make sure the connection at the MBP and the outlet are secure. Also, make sure you've calibrated your battery properly, so the readings are accurate.

    This should answer most, if not all, of your battery questions: Apple Notebook Battery FAQ
  3. MacTech68, Jul 15, 2010
    Last edited: Jul 12, 2011

    MacTech68 macrumors 68020


    Mar 16, 2008
    Australia, Perth
    It's normal:


    Apple allows the charge to drop to about 93% before charging it again. This is to prevent short charge cycles (as stated in the article).

    The battery discharges slowly even whilst not being used. It's perfectly normal.
  4. rbmanian75 thread starter macrumors member

    Mar 6, 2009
    I have not calibrated the battery. I am doing it now...
  5. rbmanian75 thread starter macrumors member

    Mar 6, 2009
    Thanks for the info. Problem solved....

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