Essentially, the battery 30, as configured, doubles as tool for {HEAD ~ removal} of {TAIL ~ the cover} 20 
Essentially , the battery 30 , as configured , doubles as tool for { HEAD ~ removal } of { TAIL ~ the cover } 20
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH