This is a good point. I would imagine that higher current applications, such as high-torque 3D, or high G maneuvers that have servos "wanting to hold" the elevator or rudder in a certain position for "long periods of time" will be the ones that draw the most current.

By warm, I think warm to the touch, to the point where we actually note the warm - to - hot feel of battery leads is approaching a point where perhaps larger wires may be needed. But, how would we do that for battery packs that come ready-made with wires attached? Of course, we can make our own, but that's more for an experienced person that has good soldering knowledge and techniques.

CGr.