There's an EU mandatory standard (which Tesla follows), and in the US an optional one that everyone but Tesla follows (that is, everyone but the gorilla with 80

There's an EU mandatory standard (which Tesla follows), and in the US an optional one that everyone but Tesla follows (that is, everyone but the gorilla with 80% market share :-P). Note that there are other standards in the rest of the world, e.g. China has a mechanically-incompatible connector (same as the EU standard, but with the male end on the cable and female end on the car and charger).