WIRELESS POWER TRANSFER ECOSYSTEM AND COILS OPERATING ON SUBSTANTIALLY DIFFERENT POWER LEVELS

A wireless power transmitter apparatus has a gap separating the first magnetic shield and the second magnetic shield, the gap having a magnetic permeability lower than that of the first magnetic shield and the second magnetic shield. A wireless power receiver apparatus has a conductive region within an area defined by a receive coil, the conductive region sized and positioned to inhibit operation of a wireless power transmitter not configured for wireless power transmission to the receive coil.