The Solar Battery is comprised of a number of photo voltaic cells. Each cell is made from a slab of semiconductor crystal. When light shines on the cell voltage is produced that can create an electrical current in a circuit. The greater the light intensity on the solar battery the greater is the current it can produce. Intended for use to familiarize students andor hobbyists with functional solar cell principles, and practical applications of solar cells. Mounting bracket not included. Safe, simple-to-use encapsulated mini-panel. Sturdy panel will endure handling without the breakage and cell damage traditionally associated with solar cells. Create various experiments by exposing and positioning the panel to the energy source. This powerful solar battery features 3 cells in a sleek, low-profile protective housing with mounting holes. Positive and negative terminals are indicated to take the guesswork out of installation. Lead wires are included.