Typical usage of the wifi with adjusted brightness (150 cd/m²) will reduce the run time to 3 hours and 31 minutes. A bigger battery (as in the Lifebook S761) would have been of use in this model. Sadly, this was not possible as Lenovo wanted to keep the case as slim as possible. A separate battery slice is available for 240 Euros (a little cheaper at most online shops) which is attached to the device at the bottom and gives the laptop an additional 36 Wh. With the extra battery, the laptop s...