As we've continued testing AMD's Ryzen 5 2500U APU over the past few days, we've been confronted with the problem of comparing battery life across laptops with different screen sizes. Many readers suggested that I should take each machine's internal display out of the picture by hooking them up to external monitors. While I wanted to get real-world battery-life testing out of the way first, I can certainly appreciate the elegance of leveling the playing field that way. Now we have.
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