After building my own battery and a few for my friends with my DIY spotwelder I thought I have some spare time at the moment maybe I can help some of you guys who don´t have access to a spotwelder.
I´m using high quality hilumin band / nickel stripes (10mm x 0,15mm) from a German seller because I had really good results with it. For example in a 10s4p battery build I use 4 layers of nickel stripes so there will be no soldering near the cells.
More details can be discussed per PM.
Enclosed some impressions of the building process.