I've had my MS 75 since March 18. I have a NEMA 14-50 with the charger that came with the car. It has always used 40A. I noticed yesterday it took a longer time to charge overnight. This morning I noticed that the setting or my charger at been reduced from 40A To 30A. Curious if the last software update did that without my noticing? If your car has been charging slow you might want to check this out.