Patent ID: 8092934

Claim:
An energy storage device comprising: a container comprising first and second portions, one of the first and second portions having a base and one or more walls defining an opening therein, the other of the first and second portions comprising a cap shaped to close the opening; the container containing a first electrode generating a charge of a polarity, and containing a second electrode generating a charge differing in polarity from that of the first electrode; the first portion comprising a first electrically conductive terminal in electrical connection with the first electrode, the second portion comprising a second electrically conductive terminal in electrical connection with the second electrode; and the container further containing a first collector plate interposed between the first electrode and the first portion, the first collector plate being electrically conductive and providing the electrical connection between the first electrode and the first electrical terminal, and wherein the first collector plate is connected to the first portion by an interference fit of a feature of the first collector plate to a mating feature of the first portion; the base being electrically isolated from the cap; the container containing an electrolyte in ionic contact with the first and the second electrodes; and wherein the portion having a base and one or more walls defining an opening therein is the first portion and the portion comprising a cap shaped to close the opening is the second portion.