FWIW... I just bought the 14-30 from Tesla last Friday, it took 3 days to show up... I’m in SF... so keep that in mind. I plug this into my dryer outlet and used the portable charger... no issues. The Tesla cables have built in circuitry so you don’t need to worry to set the amperage. I was going to go with one off of Amazon, but it was $50 (Tesla cable was $35) and no auto circuitry.