The Solar Light is a commercial solid metal light fixture with integrated solar modules, designed to light streets and yards. It has 45 powerful extra-bright LEDs, 18 watts of charging solar modules, a automatic on/off light sensor and a 12-volt, 12 amp-hour sealed battery. The Solar Road Light will stay on over 30 hours ( that's 2-4 nights depending on time of year) without sunlight charge. The solar modules are guaranteed for 10 years and are made of tempered glass, Monocrystalline and Tedlar lamination (just like large commercial-grade modules). The battery should last 3 - 5 years depending on temperature and the LEDs 50, 000 hours.