This is a new Lenovo L21M4PG3 battery for the Lenovo 13W Yoga Gen 2 series that features the highest quality lithium-ion cells and components.

This Lenovo L21M4PG3 battery is compatible with the 13W Yoga Gen 2 82YR and 13W Yoga Gen 2 82S. Additional compatible Flex 5 models are listed below.

This Lenovo L21M4PG3 battery is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty.

This 4-cell lithium-polymer Lenovo L21M4PG3 battery is rated 15.4 volts and 51 Whr and will normally last 7 hours on a full charge.

You can expect about 2 hours to 4 hours of run time with this L21M4PG3 battery when new, depending on your energy use.