Japanese company Green House Co. Ltd. has designed a LED lantern that needs no battery to run; rather it needs purely salt water. It generates electricity from salt water. This specially developed LED lantern is called GH-LED 10WBW.
The GH-LED 10WBW LED Lantern developed by Green House has no dry cell or rechargeable battery inside it. But it can lit up light, from salt water. First a solution containing 350 millilitres of water (H2O) and 16 grams of salt has to be made. Then this solution has to be poured into a water bag inside GH-LED 10WBW. The saline water acts as an electrolyte with a Magnesium (Mg) rod (negative electrode) and a Carbon rod (positive electrode) inside the lantern, and generates electricity. A single solution can power up the lights for up to eight hours.
The LED lantern comes only in white color. It weighs about 680 gram. There are 10 LED white lights in it. The lantern’s brightness is 55 lumen. The Mg rod is capable of generating up to 120 hours of electricity. By replacing the Mg rod, which is sold separately, the lantern can be reused for unlimited times. Besides, the lantern has a convenient carrying handle and a wall hanging hole.
The generated electricity can be used for lighting the LED as well as for powering other USB-powered devices by using an accompanying USB cable. Green House will release the LED Lantern in the mid-September 2012 in Japan.
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