2.49 GBP
Energizer SR321 Silver Oxide Button Cell Battery
Energizer Silver Oxide Button Cell Battery, SR65, 1.55V, 15mAh, for watches and small devices.
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Energizer SR321 Silver Oxide Button Cell Battery is a compact, high‑performance power source designed for precision electronic devices that demand reliable, long‑lasting energy in a miniature form factor.
Key Technical Specifications
- Capacity: 14 mAh – sufficient to keep small gadgets powered for weeks or months depending on usage patterns.
- Dimensions: 6.8 mm × 1.65 mm – a standard size that fits comfortably in watches, key fobs, medical devices, and other low‑drain applications.
- Voltage: 1.55 V – the optimal voltage for silver oxide chemistry, delivering stable output across its lifespan.
- Type: LD (Low Drain) – engineered to maintain performance under minimal current draw, ideal for devices that consume only a few microamps.
Silver Oxide Chemistry Explained
The silver oxide battery** is renowned for its exceptional stability and low self‑discharge rate. Unlike alkaline or lithium cells, silver oxide chemistry offers:
- Consistent Voltage Output: The internal resistance remains low throughout the discharge cycle, ensuring that connected electronics receive a steady voltage.
- Long Shelf Life: With self‑discharge rates as low as 0.5 % per year, these cells can be stored for extended periods without significant loss of capacity.
- High Energy Density: The 1.55 V nominal voltage combined with a compact size delivers more energy per unit volume than many alternatives.
Ideal Applications
The SR321’s low‑drain profile and small footprint make it the battery of choice for:
- Watches & Clocks – keeping timepieces accurate without frequent replacements.
- Medical Devices – powering pulse oximeters, blood pressure monitors, and other low‑current instruments that require dependable operation.
- Key Fobs & Remote Controls – ensuring long battery life in everyday convenience gadgets.
- Industrial Sensors – providing stable power to sensors that monitor environmental conditions or machinery status.
- Portable Electronics – suitable for small handheld devices, such as digital thermometers and pocket calculators.
Installation & Handling Tips
- Polarity Awareness: The SR321 is a button cell; insert it with the positive side facing up. Incorrect orientation can damage the device or cause leakage.
- Avoid Physical Shock: While durable, sudden impacts may compromise the internal chemistry. Handle with care during installation.
- Temperature Considerations: Operate within the recommended temperature range (typically –20 °C to +60 °C). Extreme temperatures can reduce capacity or accelerate self‑discharge.
- Safe Disposal: Once depleted, recycle according to local regulations. Silver oxide batteries contain hazardous materials that should not be thrown in regular trash.
Performance Over Time
Because of its low self‑discharge and stable voltage, the SR321 maintains close to 100 % of its rated capacity for up to two years when stored properly. In active use, a typical watch may consume around 0.5 mA, allowing the battery to last roughly 30–40 days before replacement is needed.
Compatibility with Other Silver Oxide Models
The SR321 shares its chemistry and voltage with other Energizer silver oxide variants such as the SR65 (1.55 V, 15 mAh) and SR616 (1.55 V, 15 mAh). While dimensions differ slightly, many devices designed for SR65 or SR616 can accommodate the SR321 with minimal adjustment.
Why Choose Energizer?
Energizer’s long history of battery innovation ensures that each SR321 cell undergoes rigorous testing for:
- Consistency – every batch meets strict quality standards, guaranteeing uniform performance across units.
- Reliability – proven track record in critical applications such as medical monitoring and safety equipment.
- Environmental Responsibility – manufacturing processes that minimize waste and support recycling initiatives.
Conclusion
The Energizer SR321 Silver Oxide Button Cell Battery** is a dependable, low‑drain power solution for any device that requires steady voltage in a tiny package. Its robust chemistry, long shelf life, and precise dimensions make it the go‑to choice for professionals and hobbyists alike who demand consistent performance without frequent battery changes.
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