This isn't PC or BOINC related but I found it intriguing.
Battery powered welder (https://www.blackwoods.com.au/welding-gas/welding-machines/mma-stick-welders/esab-e400800200-rampage-volt-es200i-battery-stick-welding-machine/p/04017138?utm_campaign=BWMA25-0651%20GU25-1&utm_medium=email&_hsenc=p2ANqtz-_ghxwj-p-e_r9RojkTeZzT-V--VM5vi-AQQ9lm2bRq9PaKjNN7lAIXnc0vAlU4p1fLxbkyfQeDiglc5vuvaPYM3jfsCQ&_hsmi=323016025&utm_content=323016023&utm_source=hs_email)
If you're wondering about the cost, try $5995!!!
(https://i.ibb.co/nzBNCmF/batterywelder.jpg) (https://imgbb.com/)
I'm surprised that would give out enough power to weld. I guess new technology is getting better every day
Modern inverter welders are really something else. Something like that wouldn't be much good for day long jobs, but for spot repairs it could be very handy.