[D. Creative] has a soldering gun project doing just this, making a low voltage at a very high current. The video of the project is below the break, and while electrically it’s nothing ...

Here you can see he’s using a solder gun to make the connection between the new battery and one of the solder tabs. He uses the gun instead of an iron because he needs to heat the joint quickly ...

Keep the tip of your soldering gun clean by wiping it with a damp sponge before and after every use. Applying a soldering tip ...