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3D-printed wind turbine puts 300W of power in your backpack
For the most part, portable energy generators are intended for modest uses. They can charge your phone, but they won't drive high-powered laptops or small appliances. That might change if Omni3D gets its crowdfunded AirEnergy 3D off the ground. The 3D-printed wind turbine should fit into a backpack, yet produce up to 300W of power -- enough that you can keep a whole slew of devices running, including those that wouldn't run at all on solar or thermoelectric systems. It will be open source, too, since part of the goal is to let those in Africa and other developing regions create their own reliable, renewable power sources.
