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Learn how to turn a crank flashlight into your own personal charger!
Remove all screws and separate the two pieces of plastic, covering the flashlight.
Cut the cord closest to the connector that goes into the wall. Once you have done this, you will need to take off some of the casing, exposing the inn...
Unscrew and remove the circuit board from the crank shaft while also disconnecting the blue auxiliary wires from the circuit board. Allowing them to b...
After exposing the blue auxiliary wires and your charger's wires, inter twine the negative blue auxiliary wire and the negative wire coming from your ...
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This is dangerous and likely to damage your phone battery as there is no voltage regulator and spikes from rapid winding could ruin your phone
As dan2525 said, you need at least a zener diode AND a resistor in a small circuit to prevent damage.
Just buy a crank flashlight with the USB port already built in. It saves hours of work and is read to go, and you also have a working rechargeable flashlight
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