Review on Cable Matters 30 AMP to 50 AMP RV Adapter (30 AMP to 50 AMP Generator Adapter, RV Cord) - 1.5 Feet (NEMA 14-50P to L14-30R) by Jose Haskin

This is a much cleaner way to charge Tesla when using an RV Extender or Generator. You need to correctly select all connectors, wire sizes and other parameters. Don't mess around with other unsafe methods to do this. 30 in these connectors is an important number. Never use cords that go from 30 on the wall to 50 on your car. 50/30 is fine, but not the other way around. Never use cords rated less than 30 amps (typically 10 gauge or higher, ie never > 10) with these connectors. They ask for great difficulties in your life. Or death. And buy the right Tesla adapter. Yes. The name will be 30. If you have any doubts, always seek professional help. And never believe what is written in the reviews. Including this one.