Today I purchased a macbook air, I've owned several MacBooks before but this is my first air. I just finished fully charging the battery, and it says i have close to 14 hours remaining of battery life. My question is, is this number accurate? or I just need to give the computer a couple of days to calibrate the battery. I usually get 6 hours on my rMBP 15' so this 14 hour estimate seems unrealistic to me... or who knows, maybe the MBA's battery is as good as they say it is.