Battery authentication ICs are specialized integrated circuits designed to verify the authenticity and integrity of batteries, primarily used in industries like consumer electronics, automotive, and industrial equipment. These ICs are produced by various companies worldwide, including Texas Instruments (USA), Maxim Integrated (USA, now part of Analog Devices), and NXP Semiconductors (Netherlands). They help prevent counterfeit batteries, ensure safety, and optimize performance by validating battery parameters such as voltage, capacity, and origin. Key products include secure authentication chips, fuel gauges, and battery management systems, catering to sectors requiring high reliability and safety standards.