Hey guys okay ? * So , I have a MBP 13 " early 2011 . Until last month the battery it worked perfectly , stand it 6/7 hours. But from early December until now, I closed it ( sleep ) and 1 or 2 hours later , when you open it again , I saw that he was trying to " recover the session " as if he had exhausted the battery. So I decided to check and used CoconutBattery , and he charged that my battery was just managing to hold 350mHa a total of 5500mHa (can not remember the value of head, but I think it is ) , ie the battery was not holding but not 20 minutes unplugged . And yesterday was the season finally, I was using it, and suddenly he turned off, I tried turning it on again in every way, but nothing, so I opened it, removed the battery, waited a while and put it back. He turned on, but the battery does not leave 0% (even with the charger) and it ta little slow (it has 8Gb of Ram and I just format to put the Mavericks, I was working perfectly). I executed again CoconutBattery and he accused the next state attached below. I know I should replace the battery as soon as possible, just do not buy the original, because it is expensive here in Brazil (and I intend to change notebook in the middle of next year), I do not know a good website where I could buy a new battery someone recommends? Also to doubt whether this would be only the battery. Because a friend said it could be something on the motherboard that must have made the battery goes down, then he said to check, it may be that even replacing the battery, it may be that the same thing happens with the new, if the problem is the motherboard. * The bad thing is that I have no friend who also has MBP to exchange the batteries to test what can be.