Just got my new 15" MacBook Pro yesterday. It is the 2.3GHz with 16GB RAM and 1TB flash. I charged the computer overnight and this morning it was showing 100% battery but only 4:30hs remaining. I restarted the computer and the battery shows the same. There is nothing running that could be using too much power of the computer since I did not install files or programs. Is it normal for the time remaining be kind of weird or i may have a problem with the battery?