First test today was a success, I had virtually no problem charging using the adapter. Basically, I plugged the Tesla charger into the adapter, then the J-1772 end of the adapter into my Kona and nothing happened. I started the car (with everything still hooked up) and it began charging without any trouble. So I don't know why it didn't start initially, I might just not have waited long enough, but basically I consider this a total win. I let it charge for about 10 minutes and then switched to the regular J-1772 plug that is at that same station. I did note that using the Tesla type connector gave me about 7.2 kw while the J-1772 was providing only 6.5, so I was actually doing a little better with the Tesla.