I bought this a while ago for this reason. I can put my phone, wallet, keys, etc etc in it and then lock it to a tree or similar. I can also loop a backpack through the chain lock part to secure that as well.
Wire & Supply dot com is good, they sell Royal Excelene brand. I think if you place a $100 the shipping is free, so order any Big 3 wire, speaker wires, and all the copper lugs you'll need too.
I ordered my Big 3 kit from Wire&Supply, but this 0/1 wire on Amazon. The Amazon wire is more flexible, but I trust the welding wire jacket more. Both work perfectly well.
Something like this: https://www.amazon.com/Reliance-Safego-Outside-Portable-Security/dp/B01MR44KI3/ref=mp_s_a_1_18?keywords=portable+lock+box&qid=1669643755&sr=8-18
Like a small box with a bike lock, so you can clip it to your chair and lock your phone inside while on rides.
Ok, are you being serious about the fire thing? No one else on this thread mentioned anything about starting a fire. What brand of 0 gauge ofc would you recommend that I get that's not crazy expensive? I was looking at maybe getting the Kolossus cable from Knu.
I found this cable that someone recommended on here. Would that work ok? How big of a fuse would I need?
Does the Tweco connectors look like they would work with your welder?
http://smg.photobucket.com/user/horteniv/media/leads4-1.jpg.html
A google search netted this on Amazon