Okay, so I pull into a Supercharger location. There are 11 charging stalls, but only 1 is in use when I get there. I have free supercharging for life with my Model S and I plug in and go have dinner at a local restaurant. 35 minutes later my phone app tells me I'm fully charged but the restaurant service has been slow and we are not finished eating yet. 25 minutes after the app announcement, we get back to the car and there are no other Teslas there except mine. Will I be charged anything because I unplugged 25 minutes after my car was fully charged - even though there were no other Teslas charging at the location? Can anyone provide me with a link to Supercharger chargers fees? Thanks.