Step 1: Parts and Tools
Step 2: Gutting the Iron
Step 3: Preparing the cord and battery cover
Next, Cut off the connector at the end of your USB cable leaving the male end of the connector intact. Slide the cable through the hole in the battery cover and move it low enough to give yourself some room to work. Now, strip the cable, shielding, etc. and expose the black and red wires and cut off any other wires in the cable.
Step 4: Soldering and assembly
At this point, plug the usb cable into a computer or usb wall outlet and ensure you have a good working connection. If so, carefully re-assemble and enjoy your new USB powered soldering Iron.