Gadget rechargeable battery can use electricity from the power source itself, the wind, the sun until the kinetic. Never imagined when the gadget uses rechargeable battery power source of the Wi-Fi signal? This little box can take electrical energy in the air around you. Of course, the air must contain a WiFi signal so that electrical energy can be taken. Battery power is exhibited in Wifi CES (Consumer Electronic Show) 2010.
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