Vantage said 1 hour 40 minutes of battery life when on 99% (Legion Y540). This charge has lasted 4 hours and still has 30%. Why is this happening? : r/Lenovo
Lenovo Legion Y540 review: Casual gaming with an Nvidia GeForce GTX 1660 Ti - Neowin
How To Boost battery Of Laptop Lenovo Legion Y540 In 2021 - YouTube