At night when there is no sun, you could watch a 300W TV for about 13 hours before the batteries went flat.
You could run 40 x 5W LED globes for 10 hours.
During the day, the solar panels can produce up to 4.1 kW's in full sunlight (10 x 410W = 4.1kW). Assuming 5 full "sun hours" in a day you would produce up to 17 units of electricity. The panels will first charge the batteries and after that will add whatever power they can produce to your grid.