The set - solar energy system with 4 lamps and mobile chargers and a solar panel

Solar energy system with 4 lamps and mobile chargers and solar panel specifications: battery capacity 7 ampere, solar panel 12 watt / 18 volt, electrical cable length 7 meters, 12 hours to charge the entire system, usage duration: 1 lamp 24 hours, 2 lamps 8 hours, 4 lamps 6 hours, charger power output USB 6 volts