A curious thing has happened on a few cells.  They would start discharging normally, then disappear.

Well, not physically, although that would be a lot more exciting.  Sadly, no fireworks since I built this version of the discharger.

They dropped into a logic area I didn't account for.  What that is, I have yet to look for.  But I know the display stops updating for them, and when I take them out the cell voltage is lower than the ending voltage.  

Given I just started the discharge, those cells are obviously toast, but they should be sitting in 'Done'.  

I missed something.

Looking at it.