Replacing the Battery in a MacBook Pro Unibody (2009-2012) in 5 Minutes! - YouTube
Battery Life - The 2012 MacBook Air (11 & 13-inch) Review
What is the "real-world" battery life of the "Mid-2012" and "Early 2013" 15-Inch Retina Display MacBook Pro? How does the battery life compare to the "regular" Mid-2012 MacBook Pro and the models
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MacBook Pro 13" MC375LL/A Battery
MacBook Pro review (13-inch, mid-2012) | Engadget
Battery Life - 13-inch Retina MacBook Pro Review (Late 2012)