The electric power systems no longer rely on refurbished battery cells, company representatives said. Each EV will have a brand-new drivetrain with more efficient batteries, reducing the weight of the vehicle and improving the custom build’s capabilities, E.C.D. designers said. From now on, E.C.D.’s restored classic Jaguar E-Types will pack a 42 kWh battery with a 150-mile range and vintage Land Rover Defenders a 84 kWh setup with a 200-mile range. Plus, drivers can take advantage of the new DC fast charge function, enabling them to top off their vehicle from 10% to 80% in less than an hour.