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