NIssan Leaf Cells and Cellmate

Good afternoon all,
Was looking into the cellmate K-9 to use with some Nissan Leaf cells in a series config to get just above 50v. The Nissan cells modules are made up of several cells internally and configured such that the output is in the 7.2v - > 8.4V range. However, the cellmate says it works with cell voltages of up to 5v but that it can be used with Nissan Leaf cells.
There is a centre tap on the internal series wiring so that you can get 3.6 - 4.2 relative to the +ve and -ve terminals, but I am not sure that should be used. How would one going about configuring/wiring the K9 to work with these modules?

thanks in advance

You can use the center tap - So its just like normal cells as you can get to the positive and negative of every cell.