Sam picked up the battery, looking it over and nodding. "All right, I can do that. Might be best to leave this outside, so I can drop it in quickly."

The fact of the matter was, when Dean went back, there wasn't likely to be a lot of time before they needed to get that barrier up. "When I want to bring it down, do I basically do the reverse? Take the battery out and it stops working?" He reached over, trailing his fingers over Rhiow's back, taking a little comfort himself.