Use USB port Laptop or computer ... How to use it Plug your phone into a hand-crank charger. You'll need a cable for this. Then start cranking the handle to generate power. As you crank, your ...
This human powered cell phone charger ... and cranked by hand, the generated energy can be transferred through the battery terminals to a connected device. So, he cut a USB charger cable in ...
Use USB port Laptop or computer ... How to use it Plug your phone into a hand-crank charger. You'll need a cable for this. Then start cranking the handle to generate power. As you crank, your ...