The new hydrogen outfit will allow the mining truck to be less noisy and cheaper to maintain than its diesel versions. The dump truck will weigh 290 tons, according to Popular Mechanics, making it larger than the previous largest electric vehicle: the 45-ton eDumper.
A lithium-ion battery will replace the diesel engine, allowing the FCEV haul truck to be powered by both a battery and hydrogen fuel cell technology, similar to the upcoming electric Nikola Badger pickup truck. It also gives the mining truck energy storage of up to 1,000 kilowatt-hours, allowing it to work in the same "harsh environments" as a diesel-powered haul truck, according to Williams.
The truck will also have regenerative braking, allowing the vehicle to conserve and recuperate energy while going downhill, according to Williams Advanced Engineering.