Energy devices such as batteries and methods for fabricating the energy devices. The system maintains a list of candidate transponders and, during the course of a normal toll collection, if a transponder is on the list then the system schedules a margin test for a later handshake in the capture zone. A first and a second signal terminal sets are disposed in each connector’s main body. The energy stored in the engagement wall when impacted by the wheel of the wheeled device returns the engagement wall to its original shape thereby pushing the wheel of the wheeled device away from the elongated member. A pad of three labels is considered to be optimum.