Manufacturing techniques using uniform pressure to form three-dimensional stacked-cell batteries

A battery cell, comprising:

• a cell stack comprising:
• a first sub-cell comprising a first set of layers;
• and
• a second sub-cell stacked over the first sub-cell, comprising a second set of layers with different dimensions from the first set of layers,
• wherein uniform pressure is applied to the cell stack to laminate the first and second sets of layers.

An apparatus for manufacturing a battery cell, comprising:

• a set of stepped plates corresponding to a set of sub-cells stacked to form a cell stack for the battery cell, wherein the set of sub-cells comprises:
• a first sub-cell comprising a first set of layers;
• and
• a second sub-cell stacked over the first sub-cell, comprising a second set of layers with different dimensions from the first set of layers;
• and
• a pressing mechanism configured to use the set of stepped plates to apply uniform pressure to the cell stack to laminate the first and second sets of layers.