I just bought my Macbook Pro a couple of hours ago. I know the Back to School event starts tomorrow, but the guy at the Apple store said that if it starts within a month they'll give me the gift card without returning anything. The battery is at 6 hours on 100% battery and steadily dropped from 100% to 97%, it said 5:24, in like two minutes. Is this normal? I have the brightness up and have flash enabled I think, so could that be the reason for not getting the supposed 7 hours? Thank You!