If I connect a battery to the receiver..

One thing I've been wondering about, but afraid to try, is this;

Let's say have 2 lipos in series connected to the ESC, it's turned on, then I plug it in the receiver, which has a battery plugged in the battery port. What will happen? Will this work like a BEC?

[bigbadtaz]

if you a have BEC built in the ESC you Should have No problem at all

[brian015]

I'm not sure if this is what you're saying, but if you are using an rx battery, then you disconnect the red lead from the esc (with built-in bec) to the rx. You don't want 2 power sources coming to the rx.

Yeah, I meant plugging in an RX battery to the receiver while the ESC is turned on. I will just unplug the red wire then. Thanks! :)