Thought this might be of interest to those interested in battery usage stats. Brought on Aug 15th 2011 i think. So after 6 weeks its dropped 60 mAh or 171 mAh from max - 1 to 3%. Ive consistently gone from full charge to under 10 mins left and then plugged in the charger to a full charge. Sometimes its gone to zero/off. I havent left it at zero over night (maybe once?). 66 cycles in 6 weeks = 11 times a week (1.57 times a day)! Note : It says 7 months old but its a 2011 model so i dont understand that except maybe Apple had some part or the complete mba in storage for 6 months before selling. UPDATE : I get approx 4.5 - 5.5 hours usage - so avg 5hrs - doing nothing specific. Some downloading, surfing, text work etc. Nothing too processor intensive. Without WiFi on & just text work id get 7hrs. 7hrs as standard would be great.... maybe 2012 model!?