These miniature electrochemical power sources are commonly employed in timekeeping devices. They utilize a reaction between silver oxide and zinc to generate electricity. The resulting voltage is relatively stable, making them suitable for applications requiring consistent power output over a long lifespan. A typical example is their use in small analog and digital wristwatches.
Their significance lies in their high energy density relative to their size, enabling compact watch designs. The extended operational life compared to some alternatives is another major advantage, reducing the frequency of replacements. Historically, these power cells replaced earlier mercury-based versions due to environmental concerns, offering a less toxic alternative with comparable performance.
