Apparatus for accumulating electricity; Apparatus for charging accumulator batteries; Apparatus for the control of electric current; Electric control devices for machines; Electric current control devices; Electric current rectifiers; Power packs (batteries); Power supply devices (batteries); Power supply devices (rectifiers); Power supply devices (transformers); Rechargeable batteries; Solar batteries for industrial use; Storage batteries (electric); Electric control apparatus for industrial machines; Battery starter cables; Battery testers; Connectors for electronic circuits; Electrical converters; Electro-optical sensors; Electric control devices for heating installations; Light sensors; Electrical connecting cables; Electric cables; Inverters (electricity); Direct current converters; Electrical control units for lighting installations; Plates with integrated circuits; Optical data transmission systems; Electric battery chargers; Diodes