The CR2477 battery is a robust and widely used coin cell battery known for its high capacity and compact design. This guide delves into its specifications, applications, safety protocols, and more, providing a detailed overview for consumers and professionals alike.
Overview
What is a CR2477 Battery?
The CR2477 is a lithium manganese dioxide (Li-MnO₂) coin cell battery. The nomenclature follows industry standards:
- CR: Indicates a lithium chemistry (Li-MnO₂) with a 3V nominal voltage.
- 24: Diameter in millimeters (24mm).
- 77: Height in tenths of a millimeter (7.7mm).
This battery is renowned for its balance between size and capacity, making it ideal for high-drain devices requiring long-term power.
Technical Specifications
- Nominal Voltage: 3V
- Capacity: ~1000mAh (varies by manufacturer)
- Dimensions: 24mm (diameter) x 7.7mm (height)
- Weight: Approximately 9.7 grams
- Chemistry: Lithium (Anode) and Manganese Dioxide (Cathode)
- Operating Temperature: -30°C to 60°C
- Shelf Life: Up to 10 years (1% annual self-discharge rate)
Applications
The CR2477’s high capacity suits devices requiring sustained power:
- Medical Devices: Pacemakers, glucose monitors.
- Automotive: Key fobs, tire pressure sensors.
- Consumer Electronics: Calculators, watches, LED lights.
- Industrial: IoT sensors, security systems.
- Backup Power: Memory backup in electronics.
Comparison with Similar Batteries
| Model | Diameter (mm) | Height (mm) | Capacity (mAh) | Common Uses |
|---|---|---|---|---|
| CR2032 | 20 | 3.2 | ~220 | Calculators, Motherboards |
| CR2450 | 24 | 5.0 | ~600 | Medical devices, Sensors |
| CR2477 | 24 | 7.7 | ~1000 | High-drain IoT, Key fobs |
Key Considerations: Choose CR2477 for higher capacity when device size permits. Opt for smaller cells (e.g., CR2032) in space-constrained applications.
Safety and Handling
- Do Not Recharge: Non-rechargeable; attempting to recharge may cause leakage or explosion.
- Avoid Short Circuits: Store in original packaging; keep away from metal objects.
- Temperature Sensitivity: Prolonged exposure to heat degrades performance.
- Disposal: Classified as hazardous waste. Recycle via certified centers—never incinerate or puncture.
Purchasing Tips
- Brands: Trusted manufacturers include Panasonic, Energizer, and Maxell.
- Authenticity: Purchase from reputable retailers to avoid counterfeits.
- Expiry Date: Check for freshness to ensure maximum shelf life.
Recycling and Environmental Impact
- Recycling Programs: Utilize local e-waste facilities or retailer take-back programs.
- Regulations: Follow regional guidelines for lithium battery disposal to mitigate environmental harm.
Future Trends
- Advancements: Potential for increased energy density and eco-friendly materials.
- Alternatives: Emerging technologies like solid-state batteries may offer safer, longer-lasting options, though CR2477 will remain relevant for specific applications.
Conclusion
The CR2477 battery excels in high-capacity, compact power solutions across diverse industries. Understanding its specs, applications, and safety practices ensures optimal use and longevity. As technology evolves, the CR2477 will continue to power critical devices, underscoring its importance in the portable energy landscape.
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