Abstract: A lithium ambient graphite fiber battery includes a battery inner case in which there are provided a series of adjacent cells. Within each of the cells is provided a cubical electrode bundle. The bundle is composed of a pair of flat, elongated carbon fiber electrodes. The electrodes may be of a triaxial or biaxial braid or may be of a unidirectional arrangement. The pair of electrodes is folded, one fold upon the other, to form the general shape of a cube. The cubical electrode bundles are placed adjacent one another in the cells defined within the inner battery case. A cell-to-cell interconnect is made by electrode extensions which carries the electrode over from one cell to the next in semi-bipolar form. Given the known susceptibility of lithium batteries to water, the inner battery case is hermetically sealed within an outer battery case. A pair of terminals are provided.