Table lists the cost of the components considered in the calculation of the purchase price of the battery electric truck. We obtain the unit costs of battery packs from literature for both the NMC and LFP technologies. LFP battery costs could be further reduced through secondary use in other trucks that travel shorter distances each day or in stationary applications. The decision to use a second-hand battery in another truck will depend on whether the capital savings offset the higher associated costs compared to a truck with a new battery, which offers higher energy density and start-of-life efficiency. In this work, we assume an economic credit for used batteries to be 25% of the cost of a new LFP battery over the next 10 years. The NMC batteries will be at their end-of-life after 10 years in a long-haul truck. They might still have high enough performance to work in some stationary applications or they might be recycled, to recover the valuable cobalt, nickel, and possibly other battery components. However, We assume that these uses will generate negligible revenue for NMC. The total battery cost is calculated using the battery size from Equation and the unit costs. The glider cost does not depend on the specific powertrain choice and is the same as a diesel truck. The motor, inverter, and DC/DC converter make up the electric drivetrain and are priced per unit of rated power. We use the average unit costs reported by Anculle et al. for the DC/DC converter and their projected reductions of 25-30 % from 2020 to 2030. For the long-term scenario, we assume no further decrease in its unit price. The power rating of the electric drivetrain is based on the peak power over the drive cycle and commercially available systems. Our electric drivetrain has a power rating of 425 kW based on the Cascadia HVH410-150D motor which was selected (see Supplementary Information for details). In this work, we primarily consider the scenario of overnight charging with DC power that can go directly into the battery without the need for an onboard charger.