Thank you; I was questioning if either I was missing something obvious, or if you had invented the world’s most compact way of connecting adjacent cells 
Edit: Found a post made by you showing the missing step of folding the packs: The battery builders club - #6562 by tinp123
I’m surprised the nickel can be safely folded so tight like that, but oh well, I’ve done it myself too. Sorry for derailing your thread, Louis!