Battery for Lenovo LEGION Y740-17IRHG-81UJ0025MZ | Lenovo Battery Shop
Lenovo Legion Y740 17" review - enjoy gaming, while being incognito | LaptopMedia.com
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