The CR1632 battery is a compact, coin-shaped lithium cell widely used in small electronic devices. Known for its reliability and long shelf life, this battery is a crucial component in various consumer and medical electronics. This guide delves into its specifications, applications, safety, and more.

1. Specifications

• Dimensions: 16 mm diameter × 3.2 mm height.

• Weight: Approximately 1.8 grams.

• Voltage: 3 volts (nominal).

• Capacity: 120–140 mAh (varies by manufacturer).

• Chemistry: Lithium manganese dioxide (Li-MnO?).

• Operating Temperature: -30°C to +60°C.

• Shelf Life: Up to 10 years with minimal self-discharge (~1% per year).

2. Chemical Composition
The CR1632 utilizes lithium (anode) and manganese dioxide (cathode) with a lithium salt electrolyte. This chemistry ensures stable voltage output and efficiency in low-drain devices.

3. Common Applications

• Consumer Electronics: Key fobs, calculators, LED lights, fitness trackers.

• Medical Devices: Glucose monitors, hearing aids.

• Industrial Uses: RFID tags, sensors, memory backup.

• Automotive: Remote controls, tire pressure monitors.

4. Comparison with Similar Batteries

• CR1620: Thinner (2.0 mm), lower capacity (~75 mAh).

• CR2032: Larger diameter (20 mm), higher capacity (~220 mAh).

• CR1616: Thinner (1.6 mm), shortest in the CR16 series.

5. Safety and Handling

• Installation: Ensure correct polarity (marked positive terminal).

• Storage: Keep in cool, dry places; avoid extreme temperatures.

• Risks: Do not puncture, incinerate, or short-circuit. Keep away from children.

6. Environmental Impact

• Recycling: Contains toxic materials; recycle via designated programs.

• Disposal: Never discard in household trash due to environmental hazards.

7. Purchasing Tips

• Brands: Panasonic, Energizer, Duracell, Sony.

• Check Expiry: Opt for recent manufacturing dates for maximum lifespan.

• Availability: Sold online, in electronics stores, and supermarkets.

8. Troubleshooting

• Device Issues: Check battery orientation, clean contacts, verify expiration.

• Compatibility: Ensure correct size (CR1632 vs. similar models) to avoid damage.

9. Recent Advancements
Ongoing research focuses on enhancing capacity and eco-friendly alternatives, though CR1632 remains a standard due to its proven reliability.

Conclusion
The CR1632 is a versatile, reliable power source for compact electronics. Understanding its specifications, proper handling, and disposal ensures optimal performance and environmental responsibility. Always select the correct battery type for your device to maintain safety and efficiency.