With a different configuration you could just use nickel strips like these:
US $5.25 11％ Off | High purity 21700 Pure Nickel Strip 2P 0.15/0.2*27.5mm for battery spot welding ,21700 Li battery nickel tape spot welder
https://a.aliexpress.com/_m0yFPsf
Just built 2 6S8P batteries from 21700. Used 0.2x27.5mm nickel strips and 8 AWG wires at the terminals. They work great so far: Daniels (un)geared inflatable (slowly built) - #56 by sat_be