So... What's the amp draw difference between 110/140/220... In comparison to say batteries in series? Here's the amp specs on my wittle welder: *Connects to Batteries - 18 Volt Battery can do Thin Sheet Metal - 24 Volt will Single Pass 1/2" @275 amp - 36 Volt will Weld up to 3/4" @350 to 400 amp *Welds 22 Gage to 3/4" *
I think your mixing terms here a little bit.
110 and 220 is the voltage coming out of the wall for a plug in style welder.
90/100/110/140 or anything in that area, is a common amperage output of a 110v plug in style welder. Some are fixed, some are adjustable (turn up the heat).
Your 110v or 220v A/C plug in welder steps the voltage DOWN to around 12v DC or so to get the amperage needed to weld.
Your trail welder is already running DC power, so its welding ability will depend on how much battery you can throw at it. At 24v of battery, that thing should weld as good as a high end 110v plug in welder, or about any 220v plug in welder by the specs you posted above.
Keep in mind however that your engine should be running while welding with a battery powered welder. You will suck that battery dry pretty fast, and your welds will get progressively worse and worse.
For household stuff, a cheap home depot Lincoln 110v would probably be better than abusing your trail welder. Starting and stopping your engine every time you want to weld is kind of a pain in the butt.