Computers; Accumulator jars; Accumulators, electric; Accumulators, electric, for vehicles; Batteries, electric; Battery boxes; Battery chargers; Charging stations for electric vehicles; Computer operating programs, recorded; Downloadable computer operating programs; Downloadable computer software for use in database management; Galvanic cells; Lighting ballasts; Pantographs being electric current collectors; Photovoltaic cells; Plates for batteries; Power controllers; Solar batteries; Surveying apparatus; Surveying instruments; Variometers