So i woke up this morning to find that my magsafe adapter on my rMBP wasn't green, or orange but not lit up at all. I opened the laptop up to find that the battery indicator said the machine was plugged in but not charging and it hadn't charged since i plugged it in last night, still on 75% So i unplugged it, restarted the machine and plugged it back in. Seems to be charging now, but very very slowly. Its tell me it needs 1 Hour 25 mins to charge it back to 100% from 75%!? And its pretty mud taking that long so far. Should i be concerned? Battery health is 99% and its had 60 cycles through it according to Istat.