Inverters; Accumulators and batteries; Battery cables; Battery charge devices; Battery chargers; Battery packs; Battery power supplies for medical ventilators; Battery terminal connector clamps; Circuit boards; Circuit boards provided with integrated circuits; Electric cables, wires, conductors and connection fittings therefor; Electrical receptacles; Global positioning system (GPS) apparatus; Insulated copper wire; Portable and handheld digital electronic devices for recording, organizing, t...