Battery chargers; Consumer type nickel cadmium battery chargers; Electric battery chargers; Power supply devices for battery chargers; Battery charge indicators; Battery charge monitors; Cards for use as charge cards (encoded or magnetic); Charge cards (encoded); Charge cards (magnetic); Chargers for electric batteries; Electrical charge apparatus; Portable field chargers; Terminals for the electronic payment of charges with credit cards; Consumer type power supplies; Digital control apparatus for power units; High voltage power supplies; Portable power supply apparatus (batteries); Power packs (batteries); Power sources (batteries)