The CR2450 Panasonic Lithium Coin Battery is a 3V, high-capacity button cell battery designed for long-term use in devices like medical implants, key fobs, and IoT sensors. With a diameter of 24.5mm and a 5-6 year shelf life, it provides reliable power in compact, energy-intensive applications. Its lithium manganese dioxide chemistry ensures stable voltage output.
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How Does the CR2450 Compare to Other Coin Batteries?
The CR2450 offers higher capacity (620mAh) than smaller variants like the CR2032 (225mAh) and CR2025 (170mAh). Its larger size supports extended runtime in devices requiring sustained power, such as glucose monitors or tire pressure sensors. Unlike alkaline alternatives, lithium chemistry ensures better performance in extreme temperatures (-30°C to 70°C).
| Battery Model | Capacity | Diameter | Common Uses |
|---|---|---|---|
| CR2450 | 620mAh | 24.5mm | Medical devices, automotive TPMS |
| CR2032 | 225mAh | 20mm | Watches, calculators |
| CR2025 | 170mAh | 20mm | Key fobs, LED lights |
Engineers often choose the CR2450 for applications requiring at least 12 months of continuous operation. Its 5.0mm thickness accommodates more lithium content than slimmer models, making it the preferred choice for implantable cardioverter defibrillators (ICDs) where battery replacement isn’t feasible. The battery’s 6.8g weight also minimizes impact on portable devices’ overall mass.
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What Are the Key Technical Specifications of the CR2450?
| Parameter | Specification |
|---|---|
| Nominal Voltage | 3V DC |
| Energy Capacity | 620mAh |
| Dimensions | 24.5mm x 5.0mm |
| Operating Range | -30°C to 70°C |
| IEC Certification | 60086-4 |
These specifications enable the battery to maintain 90% capacity retention after 3 years of moderate use (10mA continuous discharge). The lithium manganese dioxide chemistry provides a flat discharge curve, maintaining voltages above 2.8V until 95% capacity depletion. This stability is critical for precision instruments like digital thermometers where voltage fluctuations could cause measurement errors.
Where Is the CR2450 Battery Commonly Used?
Primary applications include:
1. Medical devices (hearing aids, glucometers)
2. Automotive systems (keyless entry, TPMS)
3. Wearable electronics (fitness trackers)
4. Industrial sensors (IoT devices)
5. Memory backup for electronics
Its leak-resistant design makes it ideal for critical systems where battery failure isn’t an option.
In healthcare settings, the CR2450 powers wireless patient monitors transmitting data every 2-5 minutes. Automotive tire pressure monitoring systems rely on its ability to withstand vibration forces up to 40G. Recent smart home innovations use these batteries in occupancy sensors, with a single cell supporting 18,000 activation cycles. The battery’s 0.3mA self-discharge rate per year makes it suitable for emergency backup applications like fire alarm control panels.
How to Properly Store and Handle CR2450 Batteries?
Store CR2450 batteries in original packaging at 15-25°C, away from humidity. Avoid stacking to prevent short-circuiting. Use clean gloves during installation to prevent oil contamination. Never solder directly to cells—use pre-tabbed versions or holders. Dispose of spent batteries at certified recycling centers to comply with lithium battery regulations.
What Innovations Exist in Lithium Coin Battery Technology?
Recent advancements include:
• Hybrid Layer Capacitors (HLC) for faster recharge
• Nano-structured cathodes boosting energy density by 20%
• Biodegradable casings reducing environmental impact
Panasonic’s CR2450 now features anti-corrosion seals for tropical climates, extending operational life in high-humidity environments.
Manufacturers are testing graphene-enhanced electrolytes that could triple cycle life in experimental rechargeable variants. Smart batteries with built-in NFC chips now enable capacity monitoring through smartphones, particularly useful for IoT deployments. Panasonic’s 2023 redesign reduced internal resistance by 18%, allowing higher pulse currents for advanced car key fobs with LCD displays.
“The CR2450’s balance of capacity and compactness makes it indispensable in medical IoT. Panasonic’s proprietary stacking technology allows 15% more active material than competitors, translating directly to longer service intervals. However, users must prioritize proper disposal—lithium cells account for 22% of battery-related landfill fires.”
— Dr. Elena Voss, Power Systems Engineer
Conclusion
The CR2450 Panasonic Lithium Coin Battery remains a cornerstone in compact power solutions, blending high energy density with environmental resilience. As IoT and medical technologies advance, its role in enabling reliable, long-term operation of critical devices will only grow. Proper selection, handling, and disposal ensure optimal performance and sustainability.
FAQs
- Can CR2450 batteries be recharged?
- No—they’re single-use lithium primary cells. Attempting to recharge may cause leakage or explosion.
- Why does my CR2450 drain faster than specified?
- High ambient temperatures (>40°C) accelerate self-discharge. Ensure devices don’t draw standby current above 1µA.
- Are CR2450 batteries interchangeable with CR2430?
- No—CR2430 is thinner (3.0mm vs 5.0mm). Using incorrect sizes risks device damage.