My Macbook pro with Retrina display that is less than 12 months old, does not seem to charge. I noticed it was charging then i noytice my battery level was low again, I checked and the LED light was not green or amber, I checked to make sure power supple was plugged and I was I even tried putting power into anther outlet with no change
MacBook Pro (Retina, 15-inch, Early 2013), OS X Mountain Lion (10.8.4)