I just noticed something very positive and encouraging. The Model S was always very picky about charging and reduced charging power when it detected anything it didn't like. There are some discussions about here. Not sure if it's voltage drop or whatever they are monitoring that can trigger the car to reduce charge current. Up until now it would only adjust down and never back up again. It would also not allow you to dial it up again during a charging session. Yesterday I updated the firmware to 6.1.115, the small update that came right after 6.1 was pushed out. I plugged in at a public charger and after about 30 min the car adjusted the current down from 30 to 22 Amp saying it detected bad wiring or an extension cable. I didn't bother restarting the charger. When I checked the charge status a few hours later it was back to 30 Amp! That's a first! The car never did that before. Not sure when they added that feature but that's excellent! I did notice the voltage was a little higher than when I plugged in. So maybe the increase in voltage made the car think it's OK to adjust the charge power up again. Just wanted to share that experience. Very good to see this is now implemented.