Source: Enomad.com

I believe I can confidently say that all of us at some point during a nature outing have run out of battery power on our cell phone or camera just at the moment we were about to capture a magnificent shot of a cool animal or a picturesque landscape. There are plenty of portable battery chargers that can spare us from those despairing occurrences, but what about one that uses a renewable energy source to charge? I bet you’re guessing it’s solar powered, but that would be too ordinary for the developers at Enomad. They have created a portable hydroelectric generator called Estream that can fit easily into a travel pack. The tube-like device has three turbines which rotate when placed or dragged underwater and the energy created from the rotating turbines gets stored in the battery attached. The battery takes about 4.5 hours to charge, and can power up a maximum of three smartphones, GoPros, or even tablet PCs.

Enomad is currently running a Kickstarter campaign to launch the product, so if you find this to be a handy gadget for your adventures to come, you can pledge for the campaign to receive your own.