Hi owners of MBA mid-2012 (13"), how is your MBA holding up ? And how long does your battery last on a full charge ? (I know that depends on your usage but if its just light browsing or doing stuff on Microsoft Word, etc does it still last for around 5-7 hours like it's supposed to ?) My battery status has been "service battery" for months now and on a full charge it usually lasts about 2 and a half hours max. Which is really bugging me but replacing a new battery is gonna cost me a ton so I thought of just bearing with it until I'm able to buy a better Macbook, hopefully a rMBA if the rumours are true haha). Please let me know how your MBA mid-2012 is doing and if I should spend on a new battery ?