The power source E1 consists of two groups of cells connected in parallel with each other, each group consisting of {HEAD ~ five 1.5 volt cells} in {TAIL ~ series} 
in
The power source E1 consists of two groups of cells connected in parallel with each other , each group consisting of { HEAD ~ five 1.5 volt cells } in { TAIL ~ series }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL