USB Device charger with Water Power

The Estream is about the size of a water bottle and weighs less than 2 pounds. Once submerged in running water, the turbine rotates and generates electricity that gets stored in the Estream’s built-in 6,400mAh battery, which takes about 4.5 hours to fully charge. A full battery should be able to charge up to three smartphones or action cameras. Estream claims that it’s able to charge devices twice as fast as a regular outlet thanks to a quick-charge function read more …….