I bought this for my back garden, I live in NC, the light came very quickly, about 11:am, it took about four minutes to put together, I let it charge the rest of the day in full western Sun. At 7:pm dusk this time of year. It came on about 10. Mins. Later and cast a soft light on a piece of yard art on my fence. Beautiful and to my amazement at 7:am just before dawn I looked out and the light was still on and just as bright. For me it lasted 12 hours. The key is the solar panel which is small, needs a good 6 hours of full Sun.