This is a brand new Dell XPS 12-9250 battery. This battery is compatible with the Dell Latitude 12 9250, Latitude 12 7275 models as well as the Dell XPS 12 9250 models.
This is the second generation XPS 12 laptop. Because there are 2 different laptops with the same name XPS 12, this new model is further identified with model number 7275, and 9250. If your laptop only has XPS 12 on the botom of the laptop, you may have the earlier model XPS 12 ( 2012 to 2014 ) that can be found here: 1st generation Dell XPS 12 battery
It also replaces the Dell original battery part number 7VKV9.

This Dell XPS 12 9250 battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 1 Year warranty.

You can expect about 2 - 5 hours of battery life with this Dell 7VKV9 battery when new, depending on your energy use.