The Tenergy CR2450 3V Lithium Battery 20 Pack (4 Cards) offers long-lasting power for small electronics like watches, calculators, and medical devices. These lithium coin cells provide stable voltage, leak-resistant construction, and a 10-year shelf life. The bulk packaging ensures cost-effectiveness, while the compact design guarantees compatibility with devices requiring CR2450 batteries. Ideal for both household and industrial use.
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How Does the Tenergy CR2450 Compare to Other Lithium Batteries?
Tenergy CR2450 batteries outperform alkaline counterparts with a higher energy density (620mAh) and consistent 3V output. Unlike zinc-air or silver-oxide batteries, they operate efficiently in extreme temperatures (-22°F to 140°F). Their lithium manganese dioxide chemistry ensures minimal self-discharge (2% annually), making them superior for low-drain devices requiring reliable, long-term power.
What Devices Are Compatible With Tenergy CR2450 Batteries?
Common applications include:
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- Digital thermometers (e.g., Braun, Omron)
- Car key fobs (Toyota, Honda)
- Fitness trackers (Garmin, Fitbit)
- Medical equipment (glucose monitors, pulse oximeters)
- IoT sensors and security system keypads
Beyond the listed devices, Tenergy CR2450 batteries power specialized equipment like laser pointers, pet microchip scanners, and digital calipers. Their 3V output aligns with devices requiring moderate power without frequent replacements. For example, a typical car key fob consumes 0.1mA in standby mode, allowing the CR2450 to last approximately 7 years under normal use. In medical settings, these batteries maintain accuracy in blood pressure monitors by delivering uninterrupted voltage during measurements. Compatibility extends to niche electronics such as fishing depth finders and HVAC system controllers, where consistent performance in varying environments is essential.
| Device Category | Average Battery Life | Voltage Requirement |
|---|---|---|
| Car Key Fobs | 5-7 years | 3V ±0.2V |
| Medical Sensors | 3-5 years | 3V ±0.1V |
| IoT Devices | 2-4 years | 3V ±0.3V |
Why Choose Lithium Chemistry for CR2450 Batteries?
Lithium manganese dioxide (Li-MnO₂) chemistry provides three critical advantages: 1) Higher energy-to-weight ratio vs. alkaline, 2) Non-aqueous electrolyte preventing corrosion, and 3) Stable discharge curve even under 90% capacity depletion. This makes them ideal for critical applications like emergency lighting backups or medical devices where voltage stability is non-negotiable.
Can Tenergy CR2450 Batteries Withstand Extreme Conditions?
Yes. These batteries maintain functionality from -30°C to 60°C (-22°F to 140°F), outperforming competitors like Energizer CR2450 which falter below -10°C. The hermetic seal prevents electrolyte leakage at 95% humidity levels. IEC 60086-4 certification guarantees resistance to vibration (16.6Hz frequency) and altitude changes up to 15,000 feet.
Field tests demonstrate the CR2450’s resilience in arctic research stations and desert solar farms. At -30°C, the battery retains 89% of its capacity compared to room temperature performance. In high-moisture environments like marine navigation devices, the stainless steel casing prevents saltwater corrosion for up to 18 months. Manufacturers of industrial sensors rely on this battery’s ability to handle sudden pressure drops during aerospace applications without voltage spikes.
What Environmental Considerations Apply to CR2450 Batteries?
While lithium batteries aren’t recyclable through standard programs, Tenergy complies with the Battery Directive 2006/66/EC. Users should utilize certified e-waste centers—91% of battery materials (steel casing, lithium salts) are recoverable. Notably, these batteries contain 0% mercury/cadmium, reducing ecological harm compared to older NiCd alternatives.
How Should You Store Unused Tenergy CR2450 Batteries?
Store in original packaging at 10°C-25°C (50°F-77°F) with ≤65% humidity. Avoid stacking batteries to prevent short-circuiting. For maximum shelf life, refrigerate (not freeze) at 5°C—this slows self-discharge to 1% annually. Always bring batteries to room temperature before use to prevent condensation damage.
Expert Views
“Tenergy’s CR2450 pack fills a niche in the bulk battery market. The 20-count option offers 30% cost savings versus single purchases, critical for businesses managing hundreds of IoT devices. Their consistent discharge curve after 5+ years in storage is unmatched in the lithium coin cell segment.” — James Renault, Power Systems Analyst at Voltec Industries
Conclusion
The Tenergy CR2450 3V Lithium Battery 20 Pack delivers reliable, long-term power for critical devices. With industrial-grade durability, environmental compliance, and bulk pricing advantages, it’s a pragmatic choice for both consumers and enterprises needing dependable energy solutions.
FAQ
- Q: Can I use CR2450 in CR2032 slots?
- A: No—CR2450 is 24.5mm diameter vs. CR2032’s 20mm. Forced insertion damages device contacts.
- Q: Do these work in Apple AirTags?
- A: AirTags require CR2032. Using CR2450 may overload circuitry.
- Q: How to test remaining capacity?
- A: Use a lithium-specific multimeter. Voltage below 2.8V indicates replacement needed.