I have already installed powertop , pm-utils , laptop-mode-tool , jupitor , also power save with jupitor , cpu-frequency skilling powersave , pm-powersave true but power usage are 1 hour and 20 minutes on 50 percentage of battery , at least 130 minutes in window seven .
Ubuntu 12.04.3 kernel 3.8 ,lenovo z400 ,ivy i5-3230 M ,nvidia 740m with Intel 4000.