This shows how to do it - in elegant way, professional BMS, watch and see how I did it Ebay: ebay.to/3hHdG1N Aliexpress: bit.ly/3E8fnyJ Amazon: amzn.to/2Xid0c3
That's a good idea connecting the positive nickle strip to the underside of the button top. I think I will do a similar, but I will solder most of the joints and only spot weld when connecting to the battery.
