Energizer Button Battery, 1.55 V, 7.9 mm Diameter

This button battery is a Compact silver‑oxide cell supplying 1.55 V for continuous low‑drain applications. It is designed to deliver steady voltage under light, long‑duration loads and is suitable where a small, low‑profile power source is required. Typical operating contexts include miniature electronic devices that need consistent nominal voltage and modest capacity at room temperature.

• 23 mAh capacity provides extended service on low drains
• 45-55 Ω impedance ensures stable performance at 40 Hz
• 1.2 V cut-off maintains predictable end‑of‑life behaviour
• 0.33 g mass enables lightweight device integration
• Continuous 30 kΩ drain gives practical runtime data

• Suitable for small watches requiring Compact coin cells
• Used for low‑profile hearing‑aid battery replacements
• Ideal for Compact sensors with continuous low drain
• Can be used for small medical monitoring devices
• Used with miniature electronic controls needing steady voltage

Under a 30 kΩ continuous drain at 21 °C the cell typically supplies about 23 mAh down to a 1.2 V cut-off and shows service longevity consistent with a low‑drain schedule.

Service percentage varies with temperature, testing indicates measurable changes in available service across −20 °C to 60 °C bands and storage effects are evident over multi‑year intervals at common ambient temperatures.

The cell uses a gel anode, separator, gasket, can and cathode arrangement characteristic of silver‑oxide chemistry which contributes to stable voltage and low self‑discharge.

Measured impedance of 45-55 Ω at 40 Hz provides an indication of internal resistance for designers to model voltage drop under expected load pulses.