With a connector and heat shrink wrap they look like this: Cubic packing is in neat rows. The size of such a pack is nD x mD x H, where n is the number of cells in a row, m is the number of rows, D is the cell diameter, and His the cell height. Nested configurations follow the same connection principles using the same nickel tab material to achieve the design. This type of configuration is typically supported with outer shrink wrap to give the cells additional support. The exposed ends of the cells are. For a four-cell pack in a circular tube: The diameter of the circumscribing circle is 2.41 D. For example, with AA cells the diameter is 14.2 mm, so three would fit into a tube 30.7 mm in. Face centered cubic packing is nested to take up less room. Calculating the size takes a little geometry. Example of a stack of cells configured end to end below: These are typically constructed by standing two cells side by side and welding a nickel strip across the terminals. The cells.