The Panasonic CR1632 is a 3V lithium coin cell battery with a diameter of 16mm and thickness of 3.2mm. It delivers 130mAh capacity, operates between -30°C to +60°C, and weighs 1.8g. Designed for low-drain devices like watches, calculators, and IoT sensors, it features a 10-year shelf life and complies with IEC 60086-4 and RoHS standards.
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How Does the Panasonic CR1632 Compare to Similar Coin Cell Batteries?
The CR1632 sits between the CR1620 (smaller capacity) and CR2032 (larger size, higher capacity). It provides 130mAh vs. CR2032’s 225mAh but fits slimmer devices. Voltage (3V) matches most lithium coin cells, but its 20mA continuous discharge rate makes it ideal for compact electronics requiring stable power over extended periods.
| Model | Diameter | Capacity | Typical Use Cases |
|---|---|---|---|
| CR1620 | 16mm | 75mAh | Basic calculators, LED lights |
| CR1632 | 16mm | 130mAh | Medical sensors, key fobs |
| CR2032 | 20mm | 225mAh | Motherboards, fitness trackers |
When selecting between these models, engineers must balance spatial constraints against runtime requirements. For example, automotive keyless entry systems often use CR1632 due to its optimal balance of thinness (3.2mm vs. CR2032’s 3.6mm) and energy density. The battery’s 0.9mA average discharge current supports devices requiring 6-12 months of continuous operation, making it preferable to CR1620 in applications needing moderate power reserves.
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What Are the Primary Applications of the CR1632 Battery?
Common uses include medical devices (glucose monitors), car key fobs, fitness trackers, and backup power for CMOS chips. Its slim profile suits space-constrained applications like Bluetooth tags and electronic shelf labels, where intermittent power bursts and long-term reliability are critical.
Recent advancements in miniaturized IoT devices have expanded the CR1632’s role in smart packaging and asset tracking. Pharmaceutical companies embed these batteries in temperature-sensitive shipment monitors, leveraging their wide operating range (-30°C to +60°C) to ensure data logging during cold chain logistics. Automotive manufacturers increasingly rely on CR1632 for tire pressure monitoring system (TPMS) sensors due to their vibration resistance and stable voltage output in extreme weather conditions. Additionally, wearable health devices benefit from the battery’s lightweight design, with some hearing aids incorporating CR1632 variants optimized for low electromagnetic interference.
What Safety Precautions Apply to CR1632 Battery Usage?
Avoid short-circuiting, overheating above 100°C, or incineration. Do not recharge—non-rechargeable lithium cells may leak or explode if subjected to逆向电流. Store in dry conditions below 40°C and keep away from children. Panasonic’s datasheet mandates compliance with UL 1642 and IEC 62133 safety certifications for commercial use.
How to Identify Counterfeit Panasonic CR1632 Batteries?
Authentic units feature laser-etched logos, consistent weight (1.8g ±0.1g), and crisp packaging with batch codes. Counterfeits often show blurred printing, uneven edges, or voltages below 2.8V. Use a multimeter to test open-circuit voltage—genuine cells measure 3.2–3.3V when new. Purchase from authorized distributors to avoid substandard cells with reduced lifespan.
What Environmental Factors Impact CR1632 Performance?
High humidity accelerates self-discharge (up to 2%/year in dry environments vs. 5%/year in humid climates). Temperatures below -30°C cause voltage drops, while prolonged exposure above 60°C degrades capacity. Panasonic’s datasheet notes ≤0.5% annual self-discharge at 20°C, making it suitable for devices requiring decade-long deployment without maintenance.
Field studies reveal that CR1632 batteries installed in outdoor smart meters show 15% faster capacity loss in tropical climates compared to arid regions. To mitigate environmental impacts, industrial users often employ conformal coating on battery contacts in high-humidity applications. Researchers at the University of Battery Technology found that storing CR1632 cells at 50% charge in oxygen-free containers reduces annual self-discharge to 0.3%, extending shelf life beyond 12 years in controlled environments.
“The CR1632’s balance of size and energy density is unmatched in miniaturized electronics. However, engineers must prioritize thermal management—stacking multiple cells without spacing can create hot spots, reducing longevity by 30–40%.”
– Senior Power Systems Engineer, IoT Hardware Consortium
FAQ
- Can I Use CR1632 in High-Drain Devices Like Cameras?
- No—its 20mA continuous discharge rating supports low-power electronics only. High-drain devices require batteries with ≥150mA output, such as CR123A.
- Does the CR1632 Contain Mercury?
- Panasonic CR1632 is mercury-free, complying with RoHS and REACH regulations. Its chemistry uses manganese dioxide (MnO₂) and lithium metal.
- How to Recycle CR1632 Batteries Safely?
- Return to certified e-waste centers. Do not dispose in household trash—lithium cells pose fire risks in compactors. Panasonic partners with Call2Recycle for U.S. recycling.