Yes it should, if your welder has the balls or it. But this thing can help a lot. I was surprised to see the difference with and without that cut.
@LukePL hell man, idk, rewind the transformer like @JonathanLau1983 mentioned, use some fancy mosfets for activating your welder as relays usually have some “bounciness” to them, not sure, but it could compromise the current output to the weld spot.
And if you are going full balls to the wall making many battery packs, you might just go ahead and get a k-weld
We have this at work, powered by 5 supercapacitors in series (2.7 V and I think 1200F each), god damn that thing can weld anything. I personally love it. The darn thing decides on the weld time on its own, because you set the power output in joules. Yea, its smart