Andrew Donald replied:

Donald, check this out: (i think you can get by with two batteries, but you would be low on volts)http://www.mitsu4wdclubqld.org/tips/tech/tech9812.htm

Rob Robson replied:

You'l need 2 sets of jumper leads for 2 batteries and 3 for three, some relatively small welding rods and some glass out of a welding mask. Join the batteries in series. Connect the negative lead to the Job and fit the rod into the positive and away you go. Ther are a couple of magazines featuring articles on the subbject including one that I wrote in the Western 4wdriver. Other mags wher 4x4 Australia & 4wd Monthly. Good Luck

rich replied:

3 batteries id the go, about 38 amps (near to 240v welder) is produced dependednt on batteries. beware without amperage/voltage regulators things can happen pretty sporadically on the weld line.
cheers
rich

Wayne replied:

Donald

The Feb 2002 4x4 magazine had a good article on bush welding (pg 108 to 110)

Rgds

wayne

rob replied:

have a look at this info too http://www.safari4x4.com.au/80scool/tech/batweld/batweld.html