Macbook Pro 15' battery time keeps fluctuating!

Discussion in 'MacBook Pro' started by kekepanter, Jun 28, 2010.

  1. kekepanter macrumors newbie

    Jun 27, 2010
    The battery time on my Macbook Pro 15" goes from one time to another in a matter of minutes. I fully charged the battery after it had been drained. This is what I mean by fluctuating:

    11:23am-11:28am (5m)
    7h51m, 5h54m, 6h57m, 6h16m, 5h29m, 6h38m, 5h53m, 6h29m, 6h9m, 6h13m

    11:29-11:34 (5m)
    6h39m, 6h36m, 6h4m, 6h8m, 6h49m, 5h52m, 6h30m, 6h0m, 5h43m, 6h30m

    Apple states that it should get 8-9 hours on a full charge and mine gets 6h15m. It's only 10mos old.

    Any ideas would be greatly appreciated. :)
  2. spinnerlys Guest


    Sep 7, 2008
    forlod bygningen
    Fluctuation is normal, as the time indicator takes into account your usage, and the CPU use is almost never constant.

    Apple on notebook batteries

    Apple Portable: Calibrating your computer's battery for best performance

    Laptop Battery Guide

    Replacing the Battery in your MacBook Pro

    Also have a look at the following links, as the information presented there might be helpful in your future endeavours into Mac OS X and could clear up initial confusion and may even prevent harm to your system or your files.

    Mac OS X Basics
    Switch 101 - guide with articles made by Apple on how to accustom yourself, after you switched to Mac OS X from Windows​

    Mac 101 - How to get started with Mac OS X​

    Find out how - tutorial videos made by Apple on how to do certain thing in Mac OS X​

    Pro tips - tips made available by Apple for easier ways of doing certain tasks​

    Mac OS X Keyboard Shortcuts - Learn about common Mac OS X keyboard shortcuts.​

    Mac OS X Beginner's Guide by MacRumors - learn about software, media players, shortcuts and some useful tips, tricks and hints​

    Mac Guides - tutorials, product guides and more​

    MRoogle - a very effective tool to search these fora using Google and made available by edesignuk, introductory threads: 1, 2 and 3


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