I use an inspiron 7520; i7 3rd generation, AMD Radeon HD 7730m w/ intel 4000hd
I have noticed that my batttery life radically change when I awake my computer from sleep. When I just boot yp my computer, I have close 4 hours battery life, then if i awake the computer I have 2 hours. Weird eh?
oh by the way! I am using Jupiter to help.