Power switching means coupled to the interface monitoring means couples the electronic circuitry to the battery in response to the interface monitoring means determining that the interface is inactive and couples {HEAD ~ the electronic circuitry} to {TAIL ~ the power receiving means} in response to the interface monitoring means determining that the interface is active 
Power switching means coupled to the interface monitoring means couples the electronic circuitry to the battery in response to the interface monitoring means determining that the interface is inactive and couples { HEAD ~ the electronic circuitry } to { TAIL ~ the power receiving means } in response to the interface monitoring means determining that the interface is active
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH