This chapter deals with organic positive-electrode materials for rechargeable batteries. Organic materials, which can act as positive-electrode materials, have attracted attention as alternatives to inorganic metal oxides. The chapter reviews molecular positive-electrode materials for organic rechargeable batteries. The effective use of electric energy is quite important to save energy as well as reduce carbon dioxide emission. Organic materials that do not include any heavy metals have several advantages as active electrode materials for lithium ion batteries, that is, they are abundant in nature and have less environmental load. The chapter outlines representative organic molecules used for molecular positive-electrode materials. They are classified into three groups, namely acceptors, donors, and dual redox systems. Lithium is an indispensable element as the carrier ion in a lithium ion battery. However, lithium resources are unevenly distributed on earth, rich in South America, particularly in Chile.