My 10s charger displays the IR numbers as well voltages for each cell, in either 5cell or 10cell charging mode.

Because of the size of the display screen, the numbers are cycled. That is, the IR numbers for the 1st subset of the cells are displayed for a couple of seconds, followed by the IR numbers for the 2nd subset. The same is true for the voltages.

The IR numbers are good measure about the health of the pack. I found if one cell's IR is over 5mohms, the pack is pretty much not-competition-worthy.

I always charge in 10cell mode (or 2 pack in FMA terminology) to minimize the charging time. At 1C charging rate (i.e, 5A), It takes about 30-40 minutes to reach a full charge.

I use one 380W DC converter per 10s charger.