This project will investigate an entirely new battery chemistry by developing A Martian Air Battery. Specifically the project will explore the concept of a Martian battery that utilizes in-situ resources to produce energy for NASA applications. Our experience producing high-energy air cathodes for our work with existing metal-air systems will be utilized during this program. Our established air cathodes will be modified, to accommodate a Martian environment, and incorporated into cells. Several different chemically composed cathodes will be investigated. The anticipated result of the phase 1 project is a new battery. Advantages of the proposed Martian battery include a light weight source for in-situ energy production. In addition the conceptual battery will be capable of atmospheric gas collection and separation.