I actually have 12 KC120's on a tracker. The dates on them is 2003.8 and I'm not having any problems with them YET. I have them on a MPPT charge controller that keeps the volts high and the amps low. Hopfuly this will keep the solder joints from overloading. Anyone know of any failures in the 2003 KC120's ?

My other three 12 panel trackers have KC130's on them. I probably have the largest solar power tracking system in Pinellas County, FL.