For you tig welders

[Old Iron]

Tig welding with a car battery

http://www.youtube.com/watch?v=XVqBRPVw08Y

And you need to check this out too

http://www.youtube.com/watch?NR=1&v=cgAThGrCV4A&feature=endscreen

 

[Dirtyrat]

Yea, if you have a tig torch, you can hook 2 batteries in series to get 24v, and weld with coat hanger for filler material... I didn't watch the video.