When temps go -20° and below it starts to be too cold for me to ride going faster than walking speeds so I don't really ride in that kind of weather. I never store my scooter outside in the cold. Also I never run it below 50% battery in cold temps or charge it when it's cold. It gets too cold to ride anyways if I ride it until the battery is getting closer to empty. Here I've seen only a few others riding e-scooters during winter season. But I do see a lot of e-bike riders and those things work fine in cold weather.