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Amazon.com: Metapen Stylus Pen M1 for Microsoft Surface (75-Day Battery Life, Smooth Writing), Work for Surface Pro X/8/7/6/5/4/3, Surface Go 3/Book 3/Laptop 4/Studio 2, ASUS VivoBook Flip 14 for Students & Doers :
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Surface Pro 4 Battery Life Timelapse, Power Cover Discussion, Surface Pro 3 Battery Comparison - YouTube
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Terrible battery life on Surface Pro 5. Battery report shows extreme degradation despite a relatively low cycle count. : r/Surface
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