Patent ID: 8460813

Claim:
A battery pack, said battery pack comprising a hollow body, a first end cap, and a second end cap; said body being formed about an axis and having first and second ends; said first and second end caps enclosing said body, said second end cap comprising an inner surface and an outer surface, said outer surface having a plurality of discrete electrical contact pads, each of said plurality of electrical contact pads beginning at a respective first radius from said axis and ending at a respective second radius from said axis, each of said plurality of electrical contact pads having a first end at a first respective clocking position, and a second end at a second respective clocking position; at least one of said plurality of discrete electrical contact pads being electrically coupled to said inner surface of said second end cap, and at least another one of said plurality of discrete electrical contact pads being electrically coupled to an inside surface of said first end cap.