The Stainless Steel Solar Light has a solar cell that converts sunlight into electricity. This electricity is used to recharge a built-in Ni-Cad battery each day. A photo-cell sensor automatically turns on the light at night. The light will use all available energy from the battery each night. The white LED bulb is incredibly bright, and will never need to be replaced. There are no wires to install, allowing easy placement anywhere on your lawn. Made with real stainless steel, this solar light will make a beautiful addition to any home!