I have several 7C batteries and I'm curious if anyone else has ever tested the temperature of each cell after charging.

Since I've started, I've noticed that the temperatures continue to rise after being removed from the charger and the temps usually rise another 10-15 degrees after being removed. I hear that 125 is the ideal temperature, but the cells hit 140 if I stop the charging at 125...can anyone explain this? Am I destroying my cells?