An aux heating system would not be necessary for an EV semi: most of the cited 40% of range lost suffered by passenger EVs is due to cabin heating, but an EV semi would actually produce enough waste heat in its powertrain to comfortably heat the cabin[1] (just like a diesel semi!).
There are also some range and power losses due to increased internal cell resistance when the battery is cold, but the effects of this diminish as the battery warms up with use. Actual range loss for an EV semi in the cold should be minor, probably similar to the range loss for ICE semis in the winter.
There are also some range and power losses due to increased internal cell resistance when the battery is cold, but the effects of this diminish as the battery warms up with use. Actual range loss for an EV semi in the cold should be minor, probably similar to the range loss for ICE semis in the winter.
https://news.ycombinator.com/item?id=26419981