This generator in combination with a battery lights our two corridors most of the time. In moderate wind the light is bright, in high wind very bright and charges 2x 10.8 volt batteries. When there is no wind the batteries supply enough light for LED strips all day and all night but not so bright as when there is wind. The charge lasts about 2 days but the LEDS still glow enough to use as a night light in the corridors for another 3 days if there is no wind. The assembly instructions were generally good but omitted an important step in tightening the generator into the housing resulting in it falling out in use. Was able to repair and it has been fine for 9 months so far.