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Button/coin battery Energizer 393 — Silver-Oxide 1.55 V, 7.9×5.4 mm
Summary description:
Energizer 393 is a single-use button/coin battery with silver-oxide chemistry and a nominal voltage of 1.55 V. Its compact dimensions (7.9 mm diameter × 5.4 mm height) suit watches, calculators, small electronic toys, medical devices and other low-drain portable electronics that require stable voltage and long shelf life.