took a while to understand what you have done there, so I drew a line to make it a bit clearer, very nice solution.........I'm inspired.....guessing you soldered the additional contact piece on left side to the bolt?
and soldered the wire on right side to that bolt........its a really neat solution.
A little-known feature of contacts that swipe sideways is that turning it on or off will wipe the surfaces and it performs a mild cleaning action. With the anti-spark mechanism, there would be very little erosion at the first point of contact.
This kit includes a 500a relay and a 400a fuse. These were recovered from industrial battery modules. These are normally VERY EXPENSIVE online. If you have any project that needs a high current relay this is your chance to save some money. Make a cheap 30a BMS into a 400a BMS. This will work for...