[ Battery chargers; Cases for smartphones; Cell phones; Chargers for electric batteries; Computer hardware; Converters, electric; Covers for electric outlets; Covers for smartphones; Electrical adapters; Electrical transformers; ] Galvanic batteries; [ Laptop computers; Mobile telephones; ] Rechargeable batteries[ ; Smartphones; Step-up transformers; Switches, electric; Tablet computers; Electric wires and cables; Voltage stabilizing power supply ]