Prius 2014 check hybrid system p0a80

So, I was driving my 2014 Prius which has mileage of 54000 kms. Check Hybrid system, stop at a safe place notice came on my screen and the hybrid system stopped working. The car was purely on engine. The error code was diagnosed as p0a80 which means "change hybrid battery pack". I got the battery tested and it shows that module 6 was at 12.3V and rest of the modules were at 13.5V. Delta is 37%, what should I do? Would module 6 replacement help in delta values coming back to normal? What is the normal delta value anyways? Please help me.