Another weight data point, Freightliner says their eCascadia has an increased tare weight of 900-1360kg (2-3klbs) over the diesel:
powertorque.com.au
However, the range is 225-250 miles at that weight so it's just for short hauls. Obviously enough battery to do 600-1000 miles would make it much heavier to something in the 5-10k range that I guesstimated

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However, the range is 225-250 miles at that weight so it's just for short hauls. Obviously enough battery to do 600-1000 miles would make it much heavier to something in the 5-10k range that I guesstimated