I've been wanting an inexpensive yet versatile battery welder for a while now and this sure seems to fill the bill. All that is needed is a solid 12V battery, usually a sealed lead acid (SLA) car battery and a pedal foot switch. I have a electric piano pedal that should work with a slight modification. I need to pick up a SLA somewhere. Oh, I also need a 5V microUSB power brick (used for most mobile phones these days).
The build quality is quite solid and professional and the included welding tips and the heavy duty heat sink bar are also much appreciated. Well done, Kaeptnbalu!
Can't wait to put it to work.