Charging jack

[frizzen]

That way should work if you're talking about a Master power switch somewhere between Battery and everything else that disconnects positive lead of the battery. If you mean the switch that turns off the ESC power to RX, then No.

Maybe throw a diode in there to ensure it can't somehow send reverse polarity to battery.
Maybe stick a fuse on there at next value higher than planned charge current.

However, I would NOT suggest doing this if you run LiPo batteries or some other chemistry that's known for being unstable or heat generating. Charge them outside the model, it's just safer.