I bought that batterys because I have to start an 3.6 l diesel tractor at 12v 2.3 kw electric starter. that means that It needs 200a I have to tray it, but seems that won't be difficult for that batterys
I made a 12v battery and I can start the tractor without problems. And I can start the tractor with lights on, which means that I need 210 A at turn-on time. At least can give 11C without any problem. No BMS needed. Great deal.