Batteries mounted on the roofs of the Nantes buses will be charged in 20 seconds with a 600-kilowatt boost of power at selected stops while passengers are embarking and disembarking. It takes less than one second to connect the bus to the charging point, making it the world’s fastest flash-charging connection technology. A further 1 to 5 minutes of charging at the terminus at the end of the line—at 400 kW—enables a full recharge of the batteries.
ABB’s flash-charging technology and onboard traction equipment, which make the flash-charging possible, are part of its innovative TOSA (Trolleybus Optimisation Système Alimentation) solution. The TOSA concept prioritizes efficiency over autonomy. This implies smaller onboard batteries and a lighter more energy-efficient bus, allowing for a higher passenger capacity.