Patent ID: 7420797

Claim:
An apparatus, comprising: a capacitor stack, including one or more substantially planar anode layers, and one or more substantially planar cathode layers; a case having a first opening and a second opening, the first opening sized for passage of the capacitor stack, the second opening defined by walls having a first thickness; a cover substantially conforming to the first opening and sealingly connected to the first opening; a plate substantially conforming to the second opening, the plate sealingly connected to the second opening, the plate having a second thickness which is approximately greater than the first thickness of the walls defining the second opening, the plate defining an aperture; a plug substantially conforming to the aperture of the plate, the plug sealingly connected to the plate; and a terminal connected to the plate, wherein the capacitor stack is disposed in the case, and the terminal is in electrical connection with the case and at least one capacitor electrode.