Renata SA is a Swiss battery manufacturer headquartered in Itingen, near Basel, and is a subsidiary of the Swatch Group, the world's largest watchmaking conglomerate. The company was founded in 1952 in Biel as a producer of precision mechanical watch components and quickly evolved into a specialist in miniature power sources. Renata's core business is the development, production, and global distribution of button and coin cell batteries for a wide range of applications. Its product portfolio is predominantly built around silver oxide batteries (e.g., the Renata 3xx/3xx series for watches) and lithium manganese dioxide coin cells (e.g., CR series), along with zinc-air cells for hearing aids and specialty batteries for medical devices. The company also offers battery holders, custom battery assemblies, and wireless power solutions for RFID and IoT systems. Renata is renowned as the leading global supplier of watch batteries, holding a dominant market share in the horological industry, and is a key OEM partner for luxury Swiss watch brands. Beyond timepieces, its batteries are critical components in medical technology (glucose monitors, insulin pumps), wireless sensors, automotive key fobs, and industrial metering. The company leverages deep electrochemical expertise and fully automated production lines in Switzerland to maintain strict quality and reliability standards. Renata's technical support and engineering services assist customers in optimizing power management for miniaturized electronic designs. As part of the Swatch Group, Renata benefits from strong financial backing and synergies across the group's extensive manufacturing and distribution network, reinforcing its position as a benchmark in miniature battery technology worldwide.