The extending portion extends along the length of the battery and the enlarged portion fits over {HEAD ~ the top} of {TAIL ~ the battery} 
of
The extending portion extends along the length of the battery and the enlarged portion fits over { HEAD ~ the top } of { TAIL ~ the battery }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL