I got my MBA 11 this morning. First thing I did was plugging in the charge. A few hours later, I powered it on for the first time. After using it for about an hour, I noticed the battery life was showing 3 hours remianing. The brightness is set to slightly less than 50%. All I've done was browsing the internet using Safari and figuring out how the Mac OS works. Nothing that I would consider CPU or SSD intensive usage. I shut it down again around 5:00pm and plugged the charger back in. Just turned it back on again around 7:30pm. It's been sitting there for 15 minutes. The battery remaining time now shows a a little over 4 hours. Is this normal? Or will it go up after several charge/discharge cycles? Obviously I know it's not going anywhere near the 9 hours claimed by Apple... but 3 or 4 hours on a full charge seems awfully short to me.