connectors shouldn't get hot, as that indicates that voltage is being dropped and power wasted. (If things get really hot and melt than that is called a fuse!). Good quality connectors in the power lines is always a good start, and will give you the best performance/efficiency anyway. A cap would plug into the battery input of your Rx as you say.
Does your ESC have a "current limit" setting? If so you could try that to limit the motor current, to see if that helps at all.
|