My new instrument arrived today, and the 4 hours I had to wait for th battery to charge before turning it on were like hell.
Finally the first look, and 2 hours later I finally pointed it at the A123 cell. The biggest factor in accuracy with IR imagers is the emissivity of the surface. Aluminum, Copper shiny steel and most metals are more reflective than emitting, but only a thin layer of rust, anodizing or paint is required to make the surface emit the correct black body radiation.
So I will paint the cells until the reflection is minimized, and run some more thermal test to see if the dents in the cells are a different temperature than the areas not stretched.