I have both Windows 7 and Ubuntu 15.04 on my Vostro 3446. I noticed that when I'm on Windows 7 I get easily 4-5 hours of battery life but when I'm on Ubuntu, it barely lasts 1.5-2 hours. I cam across few articles to switch Bluetooth off and lower the brightness levels, but that didn't help.
P.S.: If a solution is an app/terminal code related, request you all to please provide a step by step guide as I'm new to Ubuntu. I love the OS but just don't want to give up on it because of a battery issue. I'm sure there's a solution out there.
Intel i3 4th Gen 500GB nVidia GEFORCE 820m 2GB Dedicated Graphics Card
Installed Apps: Clementine Music Player VLC Player
Thanks in Advance! :)