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