Lenovo Legion Y740-17IRH (81UG) original Battery 76Wh - sparepartworld.com
Lenovo Legion Y740 (17-Inch) Review | PCMag
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
Lenovo encourages gamers to "go beast mode" with the Legion Y740 gaming laptop - NotebookCheck.net News