Success!! And also...not.
I returned to the Somerville EA chargers today, and all three were open, with the same two broken, so I backed into the working one. You have to back in an angle and almost touch the charger with your car because the cables are not long enough to reach across normally!
I made SEVERAL attempts to charge and they all failed. It would connect and spend a minute negotiating, the car would always say "ready to charge" but the EA would often fail with Timeout waiting for car. Two times though I DID get a bit further, and I heard the car close the supercharger contactors, and EA fans ramp up...but never saw any power on the screen. It would then eventually fail with Timeout waiting for isolation test on the EA screen.
This is one of the older BTC Power EA stations.
Good thing I'm not actually relying on this for travel!
So I decided to waste much more time and drive all the way up to Burlington to try the newer EA station at the mall.
Same story though! Only three EA chargers (and a Model 3 plugged into the chademo!!), two in use, I plugged into the available one. Same exact issues as above. I tried both plugging into the car first or plugging in the cable first. Same two errors. These were also BTC Power chargers. Avoid!
I drove over to the single EVgo charger which thankfully was available. This is a very old 50kW ABB charger. Took my chances getting charged a $5 per session fee. Plugged in and activated with my chargepoint app. And it immediately started charging at 46kW! Finally success!!
I stopped it after 30 seconds in hopes of avoiding any charges though.
So there you go, as we well know CCS chargers are incredibly temperamental and fraught with incompatibilities, especially with Electrify America. Do NOT rely on them!
I will check my CAN logs to see if I can tell what is going on, and will try to ask Setec to look at logs downloaded from the adapter too.