One embodiment includes a first capacitor stack including a first plurality of substantially planar anodes and a first plurality of substantially planar cathodes, a second capacitor stack including a second plurality of anode layers and a second plurality of cathode layers, an interconnect coupling the first capacitor stack and the second capacitor stack electrically in parallel, the interconnect adapted to permit rotation of the first capacitor stack with respect to the second capacitor stack, wherein the first capacitor stack and the second capacitor stack are adapted to deliver a defibrillation pulse to the anode terminal and the cathode terminal at a voltage of from approximately 410 volts to approximately 610 volts.