Battery cell with multiple stacks

A portable electronic device, comprising:

• at least one component;
• a battery management unit (BMU) configured to provide power from a battery pack to the at least one component;
• and
• the battery pack comprising:
• a battery cell;
• an enclosure enclosing the battery cell;
• at least one insulator dividing the battery cell into a first stack and a second stack, wherein the first stack and the second stack each comprise a cathode layer, an anode layer, and a separator layer disposed between the cathode layer and the anode layer;
• a first pair of conductive tabs extending from the first stack through the enclosure, wherein the first pair of conductive tabs comprises a first tab coupled to the cathode layer of the first stack and a second tab coupled to the anode layer of the first stack;
• and
• a second pair of conductive tabs extending from the second stack through the enclosure, wherein the second pair of conductive tabs comprises a third tab coupled to the cathode layer of the second stack and a fourth tab coupled to the anode layer of the second stack,
• wherein the first tab is configured to be connected to the fourth tab to connect the first stack and the second stack in a series configuration, and wherein the second tab and the third tab are configured to be connected to the BMU to provide power from the battery pack to the at least one component.