Each cell has a positive terminal and a negative terminal, {HEAD ~ each terminal} comprising {TAIL ~ a threaded post} extending outwardly from the casing 
comprising
Each cell has a positive terminal and a negative terminal , { HEAD ~ each terminal } comprising { TAIL ~ a threaded post } extending outwardly from the casing
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 OTH