EnergyBus connectors are used for charging electric bicycles and pedelecs within Europe. The connector is circular in shape and specified for charging light electric vehicles at up to 1.5 kilowatts. Electric power is provided at 12–48 volts direct current (DC) so that any battery charger can charge any rechargeable battery. Data transmission between the battery and charger uses a CAN bus, exchanging CANopen messages defined by the CAN in Automation CiA-454 standard.