The demand for longer-lasting portable power cells as well as smaller power cells has brought about development of a new series of lithium-ion coin cell batteries. The RJD series of batteries offer exceptionally high milli-amp-hour capacity to enhance product operation with increased running time and more power. Where size is critical, a smaller RJD Series battery can replace a larger coin cell batter of traditional design. This increased capacity is made possible by completely utilizing the space within the cell case. Another benefit of the patented design is that internal shorts common in conventional batteries, are virtually eliminated.