A solar cell or photovoltaic cell is a device that converts light energy into electrical energy. Solar cells have many applications. They have long been used in situations where electrical power from the grid is unavailable.
Solar, Windup, Dynamo, and Faraday Powered LED Torches and Gadgets
Handheld torch with built-in dynamo mechanism and rechargeable batteries. It is lightweight and comes with three illumination modes (one, three, and five LEDs) as well as an output socket (cable included).
Five super bright LEDs "Button-operated illumination modes (select one LED, three LEDs, five LEDs to control battery life)" In-built rechargeable batteries Dynamo charges batteries Pull out the handle and turn to charge (two rotations per second) One minute charge yields up to 15m of light Boxed with instructions Cable to charge other devices (instructions not provided) No-hassle lighting saves a fortune in batteries Lightweight and ergonomic LED Charging Indicator Dimensions: 136mm x 55mm x 45mm Due to the brightness of the LEDs this torch is not suitable for young children.