Shipping took a little too long. The battery was already partially charged to, unfortunately you can not be on the available display Residual capacity (Windows Battery icon at the bottom right) leave. Laptop turns at about 35% already from .... Whether it is now the battery, or if that is the case with an original battery, I can not say, because the laptop since I have him has always operated with power supply. It can be about 1.5 hrs. In battery mode work, would have expected a little more.