Patent ID: 7917207

Claim:
A method for constructing a configurable power source for an implantable device, comprising: providing a housing for a battery and a capacitor, the housing having a distance D between a first internal face and a second internal face, the housing adapted to fit within dimensions of the implantable device; providing a plurality of batteries of different thicknesses, each battery disposed in a respective battery case adapted to fit within a perimeter of the housing and each battery comprising a plurality of planar anode and cathode layers wherein each layer is separated by a battery separator layer; providing plurality of capacitors of different thicknesses, each capacitor disposed in a respective capacitor case adapted to fit within the housing and adjacent the battery and each capacitor comprising a unitary electrolyte, and a plurality of planar anode and cathode layers separated by a plurality of planar capacitor separator layers; and forming the configurable power source comprising: selecting the battery from the plurality of batteries, the battery having a battery thickness; selecting the capacitor from the plurality of capacitors by referencing the battery thickness and an index of respective thicknesses of the plurality of capacitors to select a capacitor such that a combined thickness of the selected battery and the selected capacitor is about equal to the distance D; and placing the battery and the capacitor in the housing.