Gravity Powered Cell Phone Charger

grabcad

Introducing the GRAVITY CHARGER. This device clamps to the back of any style phone with wireless charging built in. Once the Hook/Neodymium magnet is attached to anything over 48in off the ground, The weight of the cell phone and charging device un-spools a line rotating the ultra thin stepper motor. The stepper motor is able to produce 15-20 watts of AC power through the wireless charge coil over its 45-60 second slow fall. When the device runs out of line, you simply pick up the phone to allow the internal spring to wind up the line so it is ready for another drop. The biggest advantages to this system is that you don't have to constantly input energy like a hand crank charger requires, and it will work day or night unlike solar chargers