What is a Silver oxide battery?

A silver oxide battery is a type of primary (non-rechargeable) battery that uses silver oxide (Ag₂O) as the positive electrode. Known for its small size and high energy density, silver oxide batteries are widely used in small electronic devices such as watches, hearing aids, camera flashes, and measuring instruments. These batteries provide stable voltage output and consistent discharge performance, making them ideal for long-duration use. In a silver oxide battery, silver oxide serves as the positive electrode, while zinc (Zn) is used as the negative electrode. The electrolyte is typically an alkaline solution, usually potassium hydroxide. During discharge, silver oxide is reduced to silver, while zinc is oxidized to release zinc ions. This chemical reaction generates electrical energy.

Silver oxide batteries are capable of delivering high power even in small sizes and maintain a steady voltage over time, making them particularly suitable for portable devices.

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