Lyman (and others ...),
Each Battery system is a group of eight separate batteries. Each battery has three cells.
Again, please.
Where does this information come from? All I see in the labs are completely unfolded, long, continuous strips. One strip, i. e. one cell, per cell.
The cells are folded. There are no subcells. Neither is it necessary to achieve higher currents. The only relevant parameters are electrode chemistry and effective surface.
Also, it does not matter whether there is a short circuit in one larger cell, or in one of three parallel "subcells".