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
Performance, battery life, features and verdict - Performance, battery life, features and verdict - Lenovo Legion Y740 review | TechRadar
Legion Y740 Battery, Laptop Batteries For LENOVO Legion Y740 Laptop
Lenovo Legion Y740 17-Inch Review: RTX 2080 Graphics for Under $2,500 | Digital Trends