Hi guys, I was wondering about how to preserve my battery as long as possible... I just bought the new MBP 13" 'cause I'm gonna need it for college, but since I'll also use it as "personal computer", for web browsing, playing music and movies, I'll probably have to charge every day... My question is: if I got home and my MBP is dead, I plug it in and use it, when the battery is fully charged, I have to unplug it or I can use it for the night (still plugged in) and just unplug it the next day for school? Is it somehow harmful to my battery life? I called the Apple assistance and they told me that I need to discharge the battery at least a couple of time or three a week, but that doesn't quite answer my question... I think it's some kind of "covering our a*s" thing... And by the way, I've read that "discharge the battery" means just use at least until the 50%, is that right? So if I charge it just when it's about 40%, I just need to recalibrate once a month, and that's all fine, right? Thank you in advance, Paolo.