I tried out the Winnipeg superchargers just now. They worked, in a way. When I first plugged in with cold batteries (-11 C) the charging rate was 0 km per hour for the first 5 minutes. I was doubtful if anything was happening. Then the charging rate began to rise, eventually reaching almost 300 km per hour after 30 minutes; I expect the battery was fully warmed by then. The rate then slowed down again as the battery filled up, and stopped at my set stopping point.
However. The charger I began at stopped charging after about 20 minutes. The screen message eventually said to check the charging equipment so I plugged back in again and it still wouldn't continue. I moved to a different charger and plugged in, and it picked up where the first one had stopped. The second charger stopped too after about another 20 minutes, so I moved again and the third charger topped up my car.
It looks like there is some kind of limit per charger. This may be connected with initial testing or with there being no money charged at this time. I wanted all the juice I could get because it looks like home charging at 110 V isn't going to work for me. My overnight charge rate is about 1 km per hour, and winter hasn't really come yet.
It's good to have these superchargers here, but the maximum rate seems much slower than at the V3 chargers I was able to use in November. There I once got a charge rate of 950 km per hour with an almost discharged battery.
The car was really zippy when I left the area. I guess that's what warm batteries are like. I had forgotten. The car is a Model 3 long range AWD.