ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,773, issued on Feb. 3, was assigned to SUSTAINABLE ENERGY TECHNOLOGIES INC. (Wilmington, Del.).

"Supercapacitor to electrochemical hybrid system with smart self-discharge capability" was invented by John Cronin (Wilmington, Del.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for powering an electric vehicle including an electrochemical battery and one or more supercapacitor batteries includes determining self-discharge rate data for the one or more supercapacitor batteries and, in response to the self-discharge rate data satisfying at least one threshold condition, notifying a user to charge the one or more supercapacitor batteries, otherwis...