9 Apparatus and instruments for conducting, switching, transforming, accumulating, regulating and controlling electricity, in particular batteries for lighting, electric batteries for vehicles, electricity conduits, battery cables for motor vehicles, power cables for motor vehicles, starter cables for motors and engines, insulated and non-insulated electric wires and electric cables, in particular made of copper, aluminium or metal alloys, electric wires, electric cables, fuse wires made from metal alloys, connections for electric lines, electrical connectors, terminals [electricity], in particular battery terminals, electric and electronic connection pieces, electronic and electric connectors, joint sleeves for electric cables, switches, electric disconnectors, housings for electric switches, connectors [electricity]; calculating machines; data processing and computer apparatus, in particular data processing equipment, in particular integrated circuits for motor vehicle electronics, in particular for measuring the respective battery condition