Battery energy storage systems for use with solar photovoltaic generators; solar panels and solar energy collectors or the production of electricity; photovoltaic inverters; power inverters; electrical grid-tie inverters; chargers for electric accumulators; solar charge controllers; mounting racks and kits for solar panels; assembly of pieces of equipment; Retail sale of battery energy storage systems for use with solar photovoltaic generators, solar panels, solar energy collectors, photovolt...