After about 300 cycles and almost a year, I have more battery capacity than I started with when I bought my Macbook! I just calibrated my battery last night. I have used my computer almost completely from AC adaptor, only occasionally (like right now) using battery power. I extremely rarely discharge my battery completely. Is something wrong? Do I need to call Apple? I really don't believe I actually have only gained battery capacity after 10 months and fairly heavy use. EDIT: Also, my real-life battery life seems to be more like 2-3 hours if only using only Safari (absolutely nothing else), and yet my fans really crank up and my Macbook really gets hot.