My slow stick left Nevada bound for Gainesville this AM. I ordered battery packs with BEC connectors and a charger with futaba J output. With my glow plane, I charge the battery through the switch that runs between the battery and receiver. I figured the ESC would have a female futaba connect that I could charge the battery packs through, but I don't see one in the picture. Question, do I need a female BEC connect with bananna plugs to charge the batteries or can I charge backwards through the ESC? I'm not much of an electrician, but the latter option is setting off a little red warning light somewhere in the back of my brain. Once again, any help is appreciated.

Thanks,
Tom