Interconnect strip for an ultracapacitor module

A module comprising:

• a first ultracapacitor having a first terminal;
• a second ultracapacitor having a second terminal;
• and
• an interconnect strip that contains a central section positioned between a first attachment section and a second attachment section wherein the thickness of the strip is from about 0.05 to 5 millimeters, the length of the strip is from about 60 to about 400 millimeters, and the width of the strip is from about 1 to about 20 millimeters,
• wherein the first terminal of the first ultracapacitor is connected to the first attachment section of the strip and the second terminal of the second ultracapacitor is connected to the second attachment section of the strip, and further wherein the central section is formed from a flexible conductive material, wherein the flexible conductive material includes copper, tin, nickel, aluminum, or a combination thereof, and the central section is in the form of only one of wires, braids, coils, sheets, or bars and wherein the ratio of the length of the central section to the length of the strip is from greater than 0.75 to 0.85,
• wherein the first attachment section defines a first opening through which the first terminal is received and the second attachment section defines a second opening through which the second terminal is received, wherein a fastening device connects the first attachment section to the first terminal and the second attachment section to the second terminal, further wherein the first attachment section is welded to the first terminal and the second attachment section is welded to the second terminal.