I returned to the supercharger shortly after the car had finished charging last evening and saw a message on the display reading "Battery level exceeds charge limit". The limit is set to 90% and as far as I could tell that was the level it was charged to (I get around 238 or 239 on a typical 90% charge and the car was showing 239). I've only had the car a few months and this is the first time I've seen that warning. The warning does not appear to be in the owner's manual. Has anyone here seen that warning and/or know what it means?