Originally Posted by
howardcano
Yes, that can make sense, and I've had similar results in the past. The battery is a "clean" source, i.e., free of electrical noise. Some receivers don't reject power supply noise as well as they should, and will therefore have more range when run from a battery. It's not necessarily the extra voltage that does the trick, but the lower noise.
This makes perfect sense... Using my data logs, when going from full throttle to brakes, I do see a small deviation in BEC output voltage from the ESC to RX. This is also typically when I loose reception/ control of car...