NOVELTY - A dual configuration rechargeable battery (1) comprises a two state electrolyte, a dual use electrode associated with the two state electrolyte, an atmospheric electrode, and a reducing chemical electrode, where the battery in a first configuration generates an electrical flow with the atmospheric electrode, and in the second configuration generates an electrical flow with the reducing chemical.    USE - A dual configuration rechargeable battery used for an electric powered vehicle (claimed).    ADVANTAGE - The battery is lighter than other batteries because the oxygen for the anode is extracted from the environment (air or water with dissolved oxygen) and not carried in the battery.    DETAILED DESCRIPTION - A dual configuration rechargeable battery (1) comprises:    (A) a two state electrolyte with a reduced state and an compound state where chemical reactions change the states with a resultant electrical flow or an electrical flow changes the state with resultant chemical reactions;    (B) a dual use electrode associated with the two state electrolyte, which serves as a cathode in a first configuration and an anode (9) in a second configuration;    (C) an atmospheric electrode acting as an anode in the first configuration where atmospheric gases can enter into chemical reactions with the two state electrolyte in the reduced state resulting in the compound state and electrical flow with the dual use electrode as a cathode; and    (D) a reducing chemical electrode acting as a cathode in the second configuration where the reducing chemical enters to a chemical reaction with the two state electrolyte in the compound state resulting in the reduced state, depletion of the reducing chemical electrode, and electrical flow with the dual use electrode as an anode; where the battery in the first configuration generates an electrical flow with the atmospheric electrode by a chemical reaction changing the two state electrolyte from the reduced state to the compound state and in the second configuration generates an electrical flow with the reducing chemical by a chemical reaction changing the two state electrolyte from the compound state to the reduced state.    An INDEPENDENT CLAIM is included for a reducing chemical recovery station.    DESCRIPTION OF DRAWING(S) - The drawing is a sectional view of the rechargeable battery.    Dual configuration rechargeable battery (1)    Motor (2)    Anode (9)