Energizer SR41 Button Battery, 1.55 V, 7.9 mm Diameter

This button battery is a primary silver‑oxide cell designed to deliver a steady electrical supply for small devices operating at room conditions. It provides a nominal 1.55V output with chemistry tailored for stable low‑current discharge and is intended for applications where compact, lightweight power is required. Storage and use are specified for typical ambient temperature ranges to maintain consistent performance.

• Nominal 1.55V ensures consistent voltage for sensitive electronics
• Typical capacity 40mAh supports long service life at low drain
• Mercury‑free chemistry reduces hazardous content in the cell
• Flat contact termination enables reliable surface connection
• Lightweight 0.62g reduces overall device mass

• Suitable for powering wristwatches and timing devices
• Used with small medical instruments requiring low drain
• Ideal for precision calculators and handheld measuring tools
• Can be used for Compact sensors and keyfob electronics

Under a 13kΩ continuous discharge at 20°C the cell typically delivers 40mAh until 1.2V.

The cell is intended for storage and discharge within a 0°C to 60°C range.

The flat contact termination provides a broad mating surface for spring clips and PCB contact holders, simplifying mechanical retention.

Typical energy is approximately 58mWh when discharged at 20°C down to 1.2V.

The cell has a low profile height of 3.6mm and narrow diameter of 7.9mm for space‑constrained designs.