This is a new Lenovo Legion Y520-15iKBN battery that features the highest quality lithium-ion cells and components.

This Legion Y520-15iKBN battery is also compatible with the IdeaPad Xiaoxin 700, Xiaoxin R720 and Legion Y520 series.

This Lenovo Legion Y520-15iKBN battery is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty.

This Lenovo Legion Y520-15iKBN 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 Legion Y520-15iKBN battery when new, depending on your energy use.