Sorry title is wrong, Mobile Charger now working. My refreshed 75D has been unable to charge at it's full amperage capability since I received it (at home anyway). I have it on a 40 amp breaker and set it up at 32 amps. Every time I used it the Model S would say something is wrong with my wiring and throttle it back to 30 amps. I am heading in for snow tire changeover next week and thought I would bring the charger in to be looked at. Well since the latest 8.0 update I am able to charge at 32 amps no problem, in fact I tested it at 34 amps for a few minutes with no problems. Maybe it is a coincidence, especially since I haven't seen a lot of similar complaints. I thought it might be my power but I have solar panels and during mid day when I am off the grid it would still throttle down.