This is not impossible, but your batteries will last longer if properly charged with a programmed charger.

If you do not have a DC output on your welder, then this would be a fair amount of work.

Often, DC welders have very low voltage output. (Mine is only about 20 volts)

Others have tried. you can do a web search and see if you are up to the task.

My Buz Box Doesant have D.C. BUT: MY RANGER Gas DOES... But, now, more to learn.

Given that a normal 12 volt automotive or deep cycle battery gets charged at around 14.2 - 14.4 volts so a system using ten of them in series will need around 169 - 173 volts DC give or take.

It just happens that your normal 120 VAC utility power when rectified gives a peak DC voltage right around 170 volts DC which falls right in that working range.

Granted you may need a rather large circuit and preferably an isolation transformer to do unless you have a way of limiting the current flow but its a workable solution.

GOOD NEWS ... Thanks That may save a $1,500.00 Charger. / Left $2,000.00 Motor & $2,400.00 For Batteries. / CONTROLER ?,???.?? / MOUNTING PLATES etc.

But for now... I Must get it SMOGED! ( Last time I Hape!)

Next year, when it is time for a smog test, bring a camera to record the reactions when they see the readings from the defunct tailpipe. Good luck with the project.

Thats okay. They will just stick him for not having a properly grounded GFI instead!

I was informed two weeks ago that all future smogs of ECU controlled cars will be computer only, no tailpipe gas analysis. California.