I wonder if I'm getting this same problem.
My bike stopped charging at the Level 2 charger at my office on Thursday, but the Level 1 charger still worked at home. I was able to charge to 100% and make it to work. When I got back home on Friday, and tried to charge with the Level 1 charger, that failed to work any more.
Can anybody tell me how I can see if the connectors had melted? Or is the only way to to take the bike to the service department to take a look?