13 rMBP: actual battery charge?

Discussion in 'MacBook Pro' started by lorcar, May 9, 2013.

  1. lorcar macrumors member

    Mar 2, 2013
    brand new 13 Rmbp,
    the icon is at 80% charge, no outlet attached now, if I go over the icon with the cursor it shows 3:30h remaining

    Isnt too little? wasn t supposed to be 7 hours???
  2. Stetrain macrumors 68040

    Feb 6, 2009
    Battery life is an estimate based on what you're doing right now.

    Watching videos online that require flash, doing video editing, playing games, etc. will use more power. Also screen brightness levels can have a large effect.
  3. johnnnw macrumors 65816


    Feb 7, 2013
    What were you doing on it?

    It's unrealistic to expect 7 hours while watching videos or anything more then just may using MS Office.

    Those estimates are top of the charts, kind of like MPG rating on a car. Possible, but unlikely as it requires you to the run the machine very slow and conservatively.
  4. Stetrain macrumors 68040

    Feb 6, 2009
    Here's what Apple says about their battery life tests:


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