The central controller may selectively connect {HEAD ~ a main charger} or generator to {TAIL ~ a bank} of batteries associated with a battery management unit 
The central controller may selectively connect { HEAD ~ a main charger } or generator to { TAIL ~ a bank } of batteries associated with a battery management unit
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH