Each battery management unit measures cell or battery terminal voltage and provides {HEAD ~ this information} to a central controller via {TAIL ~ a communication medium} 
via
Each battery management unit measures cell or battery terminal voltage and provides { HEAD ~ this information } to a central controller via { TAIL ~ a communication medium }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL