Amorphous silicon photovoltaic cells; Chargers for electric batteries; Crystalline silicon photovoltaic cells; Crystalline silicon solar cells; Monocrystalline silicon photovoltaic cells; Photovoltaic cells; Photovoltaic installation apparatus, namely, solar modules for production of electricity, solar thermal and electric receivers, tracking mechanisms and concentrating optics, and control algorithms; Photovoltaic modules; Polycrystalline silicon photovoltaic cells; Portable power chargers; ...