The SR927 lithium battery, also known as the SR927SW or 395, is a silver oxide button cell battery manufactured by Murata. It delivers stable voltage (1.55V) and is optimized for low-drain devices like watches, calculators, and medical sensors. Available through distributors like Mouser Electronics, it combines long shelf life with reliability in compact applications.
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How Does the SR927 Lithium Battery Compare to Other Button Cells?
The SR927 outperforms alkaline counterparts (e.g., LR57) with a 30% higher energy density and stable voltage output. Unlike lithium coin cells (CR series), it uses silver oxide chemistry, making it ideal for precision devices. It also resists leakage better than zinc-air batteries, ensuring safer long-term use in sensitive electronics.
What Are the Key Specifications of the SR927 Battery?
Murata’s SR927 provides 1.55V nominal voltage, 55mAh capacity, and a 10-year shelf life. Its dimensions (9.5mm diameter x 2.6mm height) suit space-constrained devices. Operating temperatures range from -22°F to 140°F (-30°C to 60°C), ensuring functionality in extreme environments. The battery is mercury-free, complying with RoHS and REACH regulations.
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Engineers often choose the SR927 for its balanced performance metrics. The silver oxide cathode ensures minimal voltage fluctuation during discharge, critical for devices requiring consistent power output. Compared to similar batteries, its 55mAh capacity provides extended runtime without increasing physical size. Below is a comparison table highlighting its advantages:
| Battery Model | Chemistry | Capacity (mAh) | Voltage |
|---|---|---|---|
| SR927 | Silver Oxide | 55 | 1.55V |
| LR57 | Alkaline | 38 | 1.5V |
| CR927 | Lithium | 60 | 3V |
Where Can You Buy Authentic SR927 Batteries?
Mouser Electronics stocks genuine Murata SR927 batteries, verified via batch codes and anti-counterfeit packaging. Authorized resellers include Digi-Key, Farnell, and RS Components. Avoid third-party marketplaces to prevent counterfeit risks. Bulk purchasing options are available for industrial clients, with volume discounts on orders exceeding 500 units.
What Environmental Impact Does the SR927 Battery Have?
While mercury-free, SR927 batteries contain recyclable silver. Murata partners with TerraCycle for disposal programs. Recycling recovers 92% of materials, reducing landfill waste. Users should avoid incineration, as lithium electrolytes can release toxic fumes. Always follow local e-waste regulations for disposal.
Recycling initiatives for silver oxide batteries have expanded significantly in recent years. Specialized facilities extract silver through smelting processes, which is then reused in jewelry, electronics, and new battery production. Murata’s partnership with TerraCycle ensures consumers in 14 countries can mail used SR927 cells to certified centers at no cost. Proper disposal not only conserves resources but also prevents heavy metals from contaminating soil and groundwater. Regulatory bodies like the EPA recommend storing spent batteries in non-conductive containers until they can be processed professionally.
“Murata’s SR927 sets the benchmark for precision power sources. Its silver oxide chemistry provides unmatched voltage stability—critical for medical devices where a 0.1V drop could mean life or death. While newer technologies emerge, none match its cost-to-performance ratio in niche applications.”
– Senior Engineer, Global Battery Solutions Inc.
FAQs
- Can I Use an SR926 Instead of an SR927?
- No. The SR926 has lower capacity (46mAh vs. 55mAh) and may cause premature device failure. Always use manufacturer-recommended batteries.
- How Long Does an SR927 Battery Last?
- Typical lifespan is 2-3 years in continuous use (e.g., watches). Intermittent devices (thermometers) may last 5+ years. Storage in cool, dry conditions extends shelf life.
- Is the SR927 Battery Rechargeable?
- No. Attempting to recharge it can cause leakage or rupture. Use single-cycle disposal methods.