SteliyanStakl

I have upgraded the laptop to quad i7 3610 but noticed my battery is now discharged at a much faster rate, previously where it was equipped with a dual 3520m the battery lasted for 5.5 hours before reaching 15 per cent now it shows only 2 hrs at browsing the interent or reading documents on the screen. Can I improve the battery performance, because I would like to keep a healthy battery and not always use the laptop on ac power!