Electrical contacts may be disposed within the non orthogonal slots, thereby improving {HEAD ~ both the function} and aesthetic appearance of {TAIL ~ the battery pack} 
of
Electrical contacts may be disposed within the non orthogonal slots , thereby improving { HEAD ~ both the function } and aesthetic appearance of { TAIL ~ the battery pack }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL