Traveling to outdoor like forest camping which is far away from town and worry not enough power for your portable powerbank? Then, Hillside hydro is an alternative portable hydroelectric generator for you. Moving water spins the turbine, generating and storing power.

The internal battery is fully charged in about 8 hours. And can store enough power to recharge a smartphone 3 times.

This renewable energy source were developed by two students from Cornell University, it’s suitable for backpackers and campers. Jasper White and Hunter Hartshorne are already testing working prototype.