If I take my MacBook Air into my (not so)-local Apple Store will they replace the battery on my MBA right there or will they tell me it needs to be sent out to Apple and take 5-7 days to get back? Also a quick charging/battery question: When I charge my MBA and it's fully charged after being used without the charger, is it okay to leave it on the charger for a few days? Sometimes I do not take my MBA off my office desk for days and I usually just leave it plugged in, is that bad for the battery or okay to do? I know you have to calibrate the battery sometimes, and I do, do that. System Report says that my Cycle Count is at 499. I know its high but is it bad? I mean I can still get 3 hours out of my battery, more if I do not do YouTube or any high end stuff (obviously.) Under System Report it also says my Battery Condition is "Normal" so should I even replace the battery now or wait a little longer? Your answers and guidance are greatly appreciated! Thank you in advance! PS: Can you buy aftermarket batteries that have longer battery life than normal Apple batteries or all of them they same. Also, just so you know, this is for my Late-2010 11" MacBook Air.