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