What Are the Key Technical Specifications of the Panasonic CR2025 Battery?

The Panasonic CR2025 is a 3V lithium coin cell battery with a capacity of 170mAh. It measures 20mm in diameter and 2.5mm in thickness, operates between -30°C to 60°C, and has a shelf life of up to 10 years. Commonly used in small electronics like watches and medical devices, it complies with IEC and RoHS standards for safety and environmental safety.

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How Does the Panasonic CR2025 Compare to Similar Batteries?

The CR2025 differs from the CR2032 (3mm thicker, 240mAh capacity) and CR2016 (1.6mm thinner, 90mAh capacity). Its balanced size and capacity make it ideal for compact devices requiring moderate power. Unlike alkaline batteries, it offers stable voltage output and superior leak resistance, ensuring reliability in critical applications like pacemakers or car key fobs.

Model	Thickness	Capacity	Typical Use Cases
CR2025	2.5mm	170mAh	Wearables, medical sensors
CR2032	3.2mm	240mAh	Motherboard batteries, calculators
CR2016	1.6mm	90mAh	Low-power LED devices

What Are the Voltage and Capacity Specifications?

The CR2025 delivers a nominal voltage of 3V and a capacity of 170mAh. This allows it to power low-drain devices for 3-5 years under normal usage. Voltage remains stable (±0.2V) until 85% discharge, after which it drops rapidly. Capacity may decrease by 15-20% in sub-zero temperatures but recovers at room temperature.

What Are the Physical Dimensions and Weight?

The battery has a diameter of 20mm, thickness of 2.5mm, and weighs 2.5 grams. Its slim profile fits space-constrained devices like hearing aids or fitness trackers. The stainless steel casing ensures durability, with a rupture-resistant design rated for pressures up to 2.5 MPa.

What Is the Operating Temperature Range?

It operates reliably between -30°C and 60°C. Below -20°C, capacity drops by 25%, while above 45°C, self-discharge increases by 0.5% monthly. For long-term storage, Panasonic recommends 10-25°C environments with ≤60% humidity to maximize shelf life.

How Long Is the Shelf Life?

When stored properly, the CR2025 retains 90% capacity for 5 years and 80% for 10 years. Self-discharge rates are ≤1% annually at 20°C. Date codes on the packaging (e.g., “23A1” = January 2023) help users track freshness.

What Safety Features Are Included?

Features include:
– Multi-layer separator to prevent internal short circuits
– Pressure relief vents to avoid rupture during over-discharge
– Non-toxic lithium manganese dioxide chemistry (UL-certified)
– Double-sealed construction resisting humidity and gas leakage

The multi-layer separator consists of three polyethylene membranes with 5-micron pores, tested to withstand 500 charge cycles without degradation. Pressure relief vents activate at 10 psi internal pressure, a critical feature in high-altitude environments. The UL certification involves rigorous testing, including 1,000-hour humidity exposure and 50G impact resistance. Double sealing uses laser-welded stainless steel edges combined with nylon gaskets, achieving IP67-equivalent dust/water resistance. These features make the CR2025 suitable for implantable medical devices where failure isn’t an option.

Which Devices Commonly Use This Battery?

Top applications:
1. Wearables: Fitness trackers, smartwatches
2. Medical: Glucose monitors, hearing aids
3. Automotive: Keyless entry remotes, tire pressure sensors
4. Electronics: Calculators, LED lights
5. Industrial: IoT sensors, backup memory

In medical applications, the CR2025 powers continuous glucose monitors for up to 14 days without replacement. Automotive systems leverage its temperature resilience for tire pressure sensors exposed to -40°C road conditions. Industrial IoT gateways use clusters of CR2025s for 5-year maintenance-free operation. A notable example is the Philips Lifeline medical alert pendant, which relies on this battery for emergency signaling. Its 2.5mm profile also enables ultra-thin designs like the Samsung Galaxy SmartTag, measuring just 8mm thick.

What Environmental Standards Does It Meet?

The CR2025 complies with:
– RoHS Directive (lead/cadmium-free)
– IEC 60086-4 for lithium batteries
– UN38.3 transport safety regulations
– REACH SVHC compliance
Panasonic’s recycling program covers 98% of battery materials through 2,300+ global collection points.

“Panasonic’s CR2025 exemplifies precision engineering. Its hermetic sealing process prevents electrolyte leakage better than 99.5% of competitors, which is critical for medical implants. The use of high-purity manganese dioxide increases energy density by 12% compared to industry averages.” — Dr. Elena Torres, Power Systems Engineer

Conclusion

The Panasonic CR2025 combines compact design, reliable performance, and rigorous safety standards, making it a top choice for critical electronic applications. With proper handling and storage, users can maximize its decade-long shelf life and stable power delivery.

FAQs

Can I Replace a CR2032 with a CR2025?

No—the CR2025 is 0.5mm thinner and has 29% less capacity. Using it in a CR2032 holder may cause poor contact and reduced runtime.

Is It Safe to Store Batteries in the Refrigerator?

Panasonic advises against refrigeration. Condensation can damage contacts. Store at room temperature in original packaging.

How Should I Dispose of Used CR2025 Batteries?

Use Panasonic’s recycling program or certified e-waste centers. Never incinerate—lithium cells may explode at temperatures above 150°C.