Abstract: A coupling for connecting a battery to a battery charger of a replacement station for electric road vehicles equipped with exchangeable batteries receivable upon a roller conveyor associated with the replacement station, or to a battery charger of the owner of the vehicle, includes corresponding terminal strips associated with the battery and with the battery charger having plugs and sockets for electrical connection, and optionally for connection with an air supply and a water refilling device. The plugs and sockets are suitably connected to the battery with cables and hoses. The correspondingly adjusted terminal strip arranged at the charging position in the replacement station is provided with corresponding sockets and plugs, and has additional guide pins for engaging corresponding guide openings in the battery terminal strip. These various structures are automatically connected when the battery is advanced along the roller conveyor.