Tenergy CR927 3V lithium batteries are designed for high-drain devices like fitness trackers, calculators, and medical tools. With a 10-pack offering (2 cards of 5), they provide long-lasting power, leak-proof construction, and stable voltage output. Their compact size and 3V chemistry make them ideal for specialized electronics requiring reliable, lightweight energy sources.
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How Do Tenergy CR927 Batteries Compare to Alkaline Alternatives?
Tenergy CR927 lithium batteries outperform alkaline options in energy density and temperature resilience. They maintain 3V output until depletion, unlike alkaline batteries that gradually lose voltage. Lithium chemistry also prevents leaks, reducing device damage risks. However, they’re pricier upfront but cost-effective for long-term use in high-drain applications.
Lithium batteries like the CR927 exhibit 40% higher energy capacity than alkaline equivalents in cold environments (-18°C). This makes them preferred for outdoor medical devices or automotive key fobs in winter climates. Their flat discharge curve ensures consistent performance in devices with strict voltage requirements, such as digital thermometers. A 2023 battery performance study showed lithium cells provided 287 hours of continuous operation in glucose monitors versus 192 hours with alkaline alternatives.
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| Feature | Tenergy CR927 | Alkaline Equivalent |
|---|---|---|
| Operating Temp | -40°C to 85°C | -18°C to 55°C |
| Voltage Stability | ±0.1V | ±0.4V |
| Leakage Risk | 0.02% | 4.7% |
Which Devices Are Compatible with CR927 Batteries?
CR927 batteries power small electronics like glucose monitors, pedometers, laser pointers, and key fobs. They’re commonly used in medical devices (e.g., Omron blood pressure monitors) and fitness trackers. Always check device manuals for voltage requirements—CR927s are not interchangeable with CR2032 or similar cells due to size (9.5mm diameter x 2.7mm height) and terminal design differences.
What Safety Certifications Do These Batteries Hold?
Tenergy CR927 batteries meet UL 1642 safety standards for lithium cells, FCC Part 15 for electromagnetic compliance, and MSDS certifications for transport. They’re ISO 9001/14001 manufactured, ensuring quality control and environmental management. Certifications validate their stability in medical devices and aviation applications where failure risks are critical.
The UL 1642 certification specifically tests for short-circuit protection, abnormal charging resistance, and crushing safety. This ensures CR927 cells won’t combust under physical stress – a critical feature for implantable medical device backups. The FCC certification guarantees electromagnetic emissions stay below 1.6mA/meter, preventing interference with pacemakers or insulin pumps. Tenergy’s manufacturing facilities undergo annual ISO audits to maintain strict tolerances in lithium deposition (±0.05mm) and electrolyte filling accuracy (99.97%).
“Tenergy’s CR927 cells fill a niche in the lithium battery market by addressing low-profile device needs. Their dual-card packaging reduces oxidation risks—a common issue with infrequently used medical devices. For OEMs, these batteries provide consistent discharge curves, which is vital for calibration-sensitive equipment like diagnostic tools.” – Power Systems Engineer, Battery Tech Consortium
FAQs
- Can I Use CR927 in Place of CR1025?
- No—CR1025 batteries are thinner (2.5mm vs. 2.7mm) and may not fit securely. Always match battery dimensions and voltage specified in device manuals.
- Do These Batteries Work in Extreme Cold?
- Yes. Lithium CR927s operate in -40°C to 85°C, making them suitable for outdoor equipment and cold-chain medical storage.
- How to Test CR927 Battery Life?
- Use a multimeter—fresh cells read 3.2-3.3V. Replace if voltage drops below 2.8V under load. For devices with battery indicators, calibrate per manufacturer guidelines.