I visited Van Ness Garage yesterday, by foot. This supercharger is really at the back of the lot in the lowest level. The elevator from Target doesn't reach this level, so no danger from shopping carts. No chance of ICEing or entitled Tesla owners parking but not charging either. It looks like Tesla has learned their lesson from the
Prudential supercharger, where the stalls are in prime spots. There are also
three ChargePoint stations in the garage, one in each floor.
They must have provisions for hardwired network connectivity for sites like this. It's possible the car logs the charging session information when there is no network connectivity and sends it back to the mothership once connectivity is restored.
There was also a bag of what looked like networking connectivity stuff (cables, etc...) that may have been leftovers from the install by the supercharger cabinet. I believe in the future Tesla will be enabling the superchargers with WiFi hotspots for cars to use while charging. Elon time of course....
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There are signs indicating a free Wi-Fi in the garage which my phone could pick up near the superchargers. I don't know if it was there before or if it was added along with the superchargers. Presumably you should be able to connect the car to this network.
I'm sure that if Tesla could get Superchargers at any of the abundant free parking lots and garages in Boston, they'd put them there instead.
The only free parking garage in Boston that I know of,
South Bay, has already a supercharger, but it does not have 24/7 access. If you want free parking and 24/7 access near Boston, you have to go to
Dedham. If you also want 24/7 amenities you won't find any in Massachusetts.