This is a brand new Lenovo L21C4PH0 battery for the Lenovo series that features the highest quality battery cells and components.

This Lenovo L21C4PH0 battery is compatible with the Yoga 9 14iAP7 and Yoga 9-14IRP8 models.

This Lenovo L21C4PH0 battery is 100% compatible with the original Lenovo battery specifications and is individually tested and backed by a 2 Year warranty.

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