Hi Geo, thanks for replying.
Well my idea of testing out the voltage of individual cells is by measuring between the C1, C2, C3, C4 and B-. So in my case I have a 20V battery, the total voltage across B+ and B- is 18.5V, if the first measures 3.7V, second 7.4V, third 11.1V and so on, the cell...