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Household button battery MAXELL SR521SW (Silver-Oxide) — 2.15 mm height, 5.8 mm diameter
Summary description:
MAXELL SR521SW is a single-use silver-oxide button battery designed for small electronic devices. Size SR521SW (also known as 521) with 2.15 mm height and 5.8 mm diameter provides stable voltage for watches, calculators, medical devices, and small sensors. Single-use chemistry offers reliable shelf life and steady discharge for low-drain applications.