led</tt>, <tt>Grouped</tt>, or <tt>Lumped</tt>. <tt>Detailed</tt> model tracks each and every cell in the system. <tt>Lumped</tt> model tracks the whole module as a single unit or as lumped. <tt>Grouped</tt> model tracks the best and the worst cell in the module. The best and the worst cell is determined based on the cell-to-cell variation specified in <b>Effective rate of coolant heat transfer from each cell</b>, <b>Cell terminal resistance R0 variation from baseline</b>, <b>Cell Ahr rating variation</b>, 