Tristan Olphe-Galliard

 

The Voltmaker Charges Your Gadgets Off-Grid With Kinetic Energy

The Voltmaker Charges Your Gadgets Off-Grid With Kinetic Energy

Sick of your batteries dying at the very moment you need to make a call, flick on a flashlight, or find your position on a GPS when you are lost in the outdoors? Introducing the Voltmaker - an

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