Hey guys, I just got my new Macbook Air today. The guy at the shop installed all the essential softwares for me, which took him about 30 minutes while I was waiting at the coffee shop nearby. But basically, it is at 100% now, but dropped charge really fast... regular browsing is dropping 1 percent every couple of minutes. I charged it (first charge) at 96% and it was green within 10 minutes... and is now at 100%. So do I have to drain it on first usage, or do I have to leave it at 100% plugged in for 8 hours? Thanks for any support. You guys are awesome.