The pin has a generally tapered transition portion which provides {HEAD ~ a contact surface} for {TAIL ~ the battery}, and this transition portion is also symmetric such that the orientation of the pin relative to the board is unimportant 
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The pin has a generally tapered transition portion which provides { HEAD ~ a contact surface } for { TAIL ~ the battery } , and this transition portion is also symmetric such that the orientation of the pin relative to the board is unimportant
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH