Temperature does play a role in EV operation. Because there isn’t any exhaust heat from an engine, a BEV needs to generate heat for the cab. As such, a BEV may see a decrease of at least 15% in mileage in winter months. In extreme heat, with additional heat from charging and running the AC in the cab, the battery system may need to be cooled down. Taking into account these extremes, a battery system should be spec’ed with the capacity to get the mileage required on a daily basis.