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