Confirmed successful charging after CCS retrofit.
1. Home charging worked right after install and software update.
2. V2 Supercharger charged at 109 kW from 28% to 49% SoC, $0.23/kW
3. ElectrifyAmerica in the same parking lot was much more expensive at $0.56/kW and peaked at 100 kW charge rate, taking SoC from 49% to 56%. There were three EA chargers in use and the fourth was offline.
4. I then drove down the street to a V3 Supercharger but it only peaked at 99 kW rate, probably because battery was at 55%. Interestingly, the V3 was cheapest at $0.17/kW.
A Mustang Mach-e owner was nice enough to let me test the CCS retrofit before he plugged in. He was surprised I could use the ElectrifyAmerica charger. He is still waiting for his NACS adapter.
I haven't decided whether I'm going to sell the Chademo adapter I just bought or keep it for peace of mind. Superchargers are aplenty and the network is still growing, but if I was at an ElectrifyAmerica (or other 3rd party charging station that supports both CCS and Chademo) and the CCS connector is broken would it take down the station or will it still allow one to use the Chademo portion? I wonder...
I am really happy to have access to all DC fast charging standards now and feel (more) at ease with any future roadtrips across the U.S.