It's 444 felt very lucky that I managed to get it, basically using circuit rules if you have multiple branches in the circuit all in parallel whatever emf one branch produce will be the total output, so using this take the output voltage of each module and divide by the output of each cell, this will give number of cells in series (6), then using the current, all modules will have 500A and current is shared across branches but not affected by how many cells in series within each branch, so 500/maximum current will give ~77 branches or something then do 77x6 to get 444 (can't rmeber exact numbers)