Calibrate the battery right away...
All the Mac Techs suggest calibrating your battery right away and then calibrating it once a month. Supposedly it keeps the battery healthier longer. My old MBP would barely go 1.5 hours on a full charge (yes, my battery was recalled and exchanged). No matter, the battery was useless. My new Macbook gave me almost 5 hours today with a fully bright display, using WiFi and several applications open at once! Did I say I love my MacBook!