Traxxas xl2.5 flashing red and green
 

My XL2.5 was flashing red and green after doing some reading found it was the code for over voltage. This was with a freshly charged 2 cell. Could not get it to quit flashing red and green after turning it on and hitting the throttle. The wheels would start to go and then death. Red and green flashing again. Plugged in a 3 cell to give it a real over voltage unplugged it after it alarmed out. Put the two cell back on it and its working right again. Just thought I would share my findings.