I bought my macbook this last July, (5months ago) I used coconut battery.app and it shows my battery only able to charge up to 4784mAh instead of the original 5200mAh and that it's 9 months old. What is the deal??? I have tried calibrating and it doesn't help. Do I have to calibrate 3 times one after the other or something??? Did apple do a recall on any batteries that I might not be aware of?? Also, this is for my 13.3in macbook 1.83GHz.