Battery layout incorporating full metal edge seal

A thin film battery comprising:

• a) a substrate having a first surface;
• b) first current collector on the first surface of the substrate;
• c) first passivation layer electrically coupled to the first current collector and forming a continuous metal to metal seal around a defined area of the first current collector, the first passivation layer having a via opening;
• wherein the first passivation layer and the first current collector define a generally enclosed area;
• the battery additionally comprising:
• d) a cathode material;
• e) a second current collector, wherein one of the first and second current collector is an anode current collector and the other is a cathode current collector;
• f) an electrolyte layer, the electrolyte separating the cathode material from the anode current collector;
• and
• g) an insulation layer, the insulation layer together with the electrolyte layer separating the anode current collector from the cathode material and the cathode current collector;
• the cathode material, second current collector, electrolyte layer and insulation layer being disposed within the enclosed area defined by the first passivation layer and the first current collector;
• the battery additionally comprising
• h) a second passivation layer electrically coupled to the second current collector through the via opening of the first passivation layer.