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Legion Y740, 4 to 5 hours battery life under use. After updating bios, enabling hybrid graphics mode, undervolting cpu by 155 mV and setting screen brightness to 50%. : r/Lenovo
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Lenovo Legion Y740 review: A laptop built for the future has a few issues in the here and now | PCWorld
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Battery life & temperature : Lenovo Legion Y740 (9th Gen) review: A gaming laptop that looks all business - HardwareZone.com.sg
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