A solar lamp is a portable light fixture composed of a led lamp, photovoltaic solar panel, and a rechargeable battery. Solar lamps recharge during the day. At dusk, they turn on (usually automatically, although some of them include a switch for on, off and automatic) and remain illuminated overnight, depending on how much sunlight they receive during the day. Discharging time is generally 8 to 10 hours. Solar lights are easily installed and maintained, and provide a cheaper alternative to wired lamps. Cfl based solar street lightkey features:high efficiency electronic circuitry.very low self-consumption.100% short circuit protectionsurge/lightning protected.perfect design, easy installationpwm mosfet based solar charge controller for efficient battery charging.automatic dawn dusk operation (with timer-optional) led based solar street lightkey features:high efficient electronic circuitry. very low self-consumption < 7ma. 100% short circuit protection surge/lightning protected. perfect design, easy installation pwm mosfet based solar charge controller for efficient battery charging. automatic dawn dusk operation (with timer-optional) highly economical and reliable single battery type temperature compensated battery charging. approved by mnre govt, of india