(click to enlarge) (click to enlarge) I turned my computer on at 4:05pm. I made sure it was charged to 100% before I unplugged the power supply. It is now 5:15pm and my battery is already at 14%. The ONLY programs I have had running are: - iTunes - Safari - Firefox (not being used, just on) - Mail Other things to note: - Energy Saver set to: "Better battery life" instead of "Higher Performance". - Display brightness set at 13/16 I'm getting less than 1.5 hours of battery life while just searching the internet and listing to music. This is absolute BULL****!! IMO Apple owes me a new battery. But I'm confident that if I walk into the Apple store with this issue they are going to tell me to **** off. EDIT: After reading a lot of replies, a lot of people seem to think the brightness of the on board display can cause the dramatic drop in loss of battery life. I refuse to believe that an LED backlit screen, at 13/16 brightness, can cause a loss of over 2.5 hours of battery life. However, I will put that to the test. I am now at work and have my laptop plugged into an external monitor, keyboard, and mouse: (click to enlarge) I'm going to let the battery charge to full (1 hours left of charging) then run it on battery power. I'll see if having the onboard display turned completely off will solve my problem.