I am referring to the small 12v starting battery. The hybrid battery is under the (rear) passenger seats.Based on him having a hybrid and talking about the cargo area, I think he's talking about the larger battery unrelated to the starting battery. The cargo area is where the 2nd gen escapes had their hybrid batteries so I am assuming they used the same location.
Edit: saw his other post. It looks like instead of a spare tire, Ford put a tiny little starting battery in that location instead. Seems like an odd use of space to me.