I live in south Louisiana and everyone knows that we have heat and humidity.
My e-revo and slash was runing hot with the stock battery since I received it about two weeks ago, but not to the point of the heat shutting it down. I did some looking on the net and decided to put a opening in the "windows" and an opening in the "windshield". I now have Max Amps 1600 batteries and ran the two batteries back to back. The temp of the ecs and motor was noted to be very cooloer that just running one of the stock batteries before I did the body mod. I already had a heat sink on back order, but now I am not shure if I will need it.
One other note: All I can say is "WOW!" The difference between the stock traxxas battery and the MaxAmps is unbelievable. Now do not get me wrong, I like the Traxxas batteries, but the output difference is very noticable.