The Duracell D309/393 is a silver oxide button cell that is ideal for the most compact applications. A characteristic of silver oxide cells is the low self-discharge and their stable voltage; the D309/393 also shares that trait making it a battery suited towards smaller medical devices like glucometers, digital thermometers, hearing aids, as well as calculators, small PDAs, and electronic toys for children. Whether using it for devices that are necessary for your daily life or simply powering up a calculator for some quick math, the D309/393 is able to operate in a wide temperature range making it suitable for climates extremely warm or extremely cold.
Notable Features
» Perfect for watches, calculators, themometers, and more
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