The various power banks on the market are dazzling, but no matter how creative they are, they can’t compare to this hydroelectric power bank. It’s called Blue Freedom. Just listen to the name It looks awesome when you look up. As long as you put the turbine into the river, the power generated by the water flow can charge the power bank. You don't have to worry about your phone running out of battery when you take one with you in the wild. The turbine rotates in the water for one hour and can make the mobile phone work for 10 hours. If this technology matures, it can provide power to remote areas lacking electricity.
