Batteries; Accumulators; Apparatus for converting electronic radiation to electrical energy, namely, photovoltaic solar modules; Chargers for electric batteries; Crystalline silicon solar cells; Electronic device for monitoring and optimizing photovoltaic arrays; Photovoltaic cells also including a solar thermal collector sold as a unit; Photovoltaic installation apparatus, namely, solar modules for production of electricity, solar thermal and electric receivers, tracking mechanisms and conce...