I bought this set for my chicken coop to illuminate the egg production in the winter months to keep it constant. I bought two more LED lights added with 12V and well below 20 watts of power. The construction is easy and instructions are almost unnecessary. I am hobbyists and Electrical is my enemy. However, the structure is easy. I let the battery now have 3 days full load and then brought through a separately purchased timer from the camping area, the LED lights on. Two days illuminating the LED for each morning 1 1/2 hours and in the evening for 1 1/2 hours and the battery was empty. This is disappointing as I said as far was below the 20 watts. there must probably the best solar conditions prevail the full power of the Panel to tickle. Otherwise absolutely great!
