Hi guys, I've had the Rev A 64SSD for about 4-6 weeks (brand new from Apple), and last night when it reached low battery with 18 minutes left I plugged in the charger. A couple of hours later I unplugged it and it still only had 18 minutes remaining. That was bizarre because it was obviously plugged in and switched on (the screen goes brighter once the charger is plugged in). I tried again this morning and the same thing It only stays on if it's plugged in! Do I need to return it? Can I go into the Apple store if I bought it online? If it does have to be sent away, do they provide a replacement?