This is a new Lenovo Legion Y520 battery that features the highest quality lithium-ion cells and components.

This Lenovo Legion Y520 battery also replaces the original battery in the IdeaPad Xiaoxin 700, Xiaoxin R720 and Legion Y520 series.

This Lenovo Legion Y520 battery is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty.

This Lenovo Legion Y520 battery is rated 10.9 volts and 4100 mAh and will normally last 7 hours on a full charge.

You can expect about 2 hours to 4 hours of run time with this Lenovo Legion Y520 battery when new, depending on your energy use.