Patent ID: 8170662

Claim:
An apparatus, comprising: a case; a plurality of capacitors disposed in the case, the plurality of capacitors comprising a stack of substantially planar electrodes comprising: a first capacitor comprising a first partition disposed in the case and comprising interconnected anodes of the stack of substantially planar electrodes, the anodes coupled to anode connection members that are in alignment to define a substantially planar connection surface inside the case along which the anodes of the first partition are interconnected; a second capacitor comprising a second partition disposed in the case, with an electrical insulator disposed between the first partition and the second partition, the second partition comprising additional interconnected anodes of the stack of substantially planar electrodes, the additional anodes coupled to additional anode connection members that are in alignment to additionally define the substantially planar connection surface inside the case, wherein the additional interconnected anodes of the second partition are electrically isolated, within the case, from the interconnected anodes of the first partition; and cathodes electrically interconnected and interspersed among the first partition and the second partition, with the first partition having a first capacitance and the second partition having a second capacitance different than the first capacitance; an electrolyte disposed in the case and contacting the cathodes, the anodes and the additional anodes; and a switching circuit coupled to the first and second partition, the switching circuit adapted to charge the first partition in a first mode and to charge the first partition and the second partition in a second mode, wherein the switching circuit is adapted to provide a variable defibrillation capacitance.