[QUOTE=Motoman;170803]It's funny that I kind-of stumbled upon this thread because I was running my XXX-T MF2 today with a "frankenstein" battery I made out of 5 new cells and 2 old cells(7 cell Ni-Cd 2400). I guess the 2 old cells were bad because I got 1 or both of the old cells to vent. I wasn't even running it hard. I checked the temp on one of the old cells and it was 300+ F. the new cells were only like 130F.

I believe the temp record you made was not real temp of the cell. Since you use a temp gun, it has a larger error in shiny metal material. The reflectiveity is hight for the ir temp gun. Try to avoid to measure cells without any cover and stick.