Really?? Do you have it geared abnormally high or something? This is a 10th scale truggy with about the same power requirements as a 1/8 buggy, so it surprises me that the 5Ah 20C pack was hot.
Not haot, but abit warm... ok it was winter so freaking cold around me, so that might be why they seemed warm. it was in my old E-revo:) and almost stock gearing