I have looked into the matter and want to note that since the goal of the camera is to be wireless, the batteries will be the first thing to take the charge for the camera. This being the case, the batteries will need to be removed in order to work on strictly USB power. I hope this answers your question!
I want to apologize here as there may have been some confusion on my end when answering this post. When using the USB power on a camera, we use the line power first and don’t use battery, if you unplug line power, we fallback to battery. However, the camera will function better when the batteries are removed while using USB power. Again I apologize for this misinformation and I hope this sheds some light on the situation for you all.