Mehemetmustafaalcik

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Mehemetmustafaalcik
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The GravityLight uses gravity, acting on a weighted bag, to generate energy.

The GravityLight uses gravity, acting on a weighted bag, to generate energy. great for camping or off-grid living -- no batteries. no solar cells that need sun. no hand cranks that lose their spring.

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This emergency radio has a USB port for charging smartphones when there's no power. features include an integrated LED flashlight, USB port for charging smartphones, mini-USB cable, and a built-in solar panel for supplemental power.

Biolamps uses CO2 to light up the streets. Would be great!!!!

Eco street lamp: smart solution of green energy resource in the future, mainly the electricity. An eco friendly energy resource idea that is taken from nature will create healthy environments where we live.