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MacBook Pro - Wikipedia
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The Best Battery Life I've Ever Seen - Apple's 2009 MacBook Pro: Battery Life to Die For
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Other Hardware Changes - Apple's 2009 MacBook Pro: Battery Life to Die For
How to Replace the Battery in a 13-inch MacBook Pro (Mid 2009) MacBookPro5,5 - YouTube
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Review Apple MacBook Pro 13 Mid 2009 2.53 GHz - NotebookCheck.net Reviews