This invention includes {HEAD ~ a battery pack} having {TAIL ~ an improved battery retention system} for coupling to another device, like a desktop charger 
having
This invention includes { HEAD ~ a battery pack } having { TAIL ~ an improved battery retention system } for coupling to another device , like a desktop charger
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH