at least one electrically chargeable, storage element having electrical input means, and {HEAD ~ electrical output means}, said electrical input means being in functional communication with said electrical output means of said {TAIL ~ electrical energy source} 
at least one electrically chargeable , storage element having electrical input means , and { HEAD ~ electrical output means } , said electrical input means being in functional communication with said electrical output means of said { TAIL ~ electrical energy source }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL