During operation of {HEAD ~ storage circuitry} 20 , {TAIL ~ the battery modules} typically have substantially the same state of charge which may be referred to as a nominal state of charge 
During operation of { HEAD ~ storage circuitry } 20 , { TAIL ~ the battery modules } typically have substantially the same state of charge which may be referred to as a nominal state of charge
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH