The Panasonic BR435 lithium battery pack is a high-performance, 3V lithium coin cell designed for devices requiring stable power in extreme temperatures. With a 1600mAh capacity, it excels in medical devices, IoT sensors, and industrial tools due to its leak-proof design, long shelf life, and compliance with IEC/ANSI standards. Its reliability in low-drain applications makes it a top choice for critical systems.
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How Does the BR435 Compare to Other Lithium Coin Cells?
The BR435 outperforms competitors like the CR2032 with a higher capacity (1600mAh vs. 225mAh) and wider temperature range (-40°C to 85°C). Unlike alkaline batteries, it resists voltage drops in cold environments, making it ideal for pacemakers, tire pressure sensors, and remote monitoring systems. Its stainless steel construction also enhances durability compared to standard lithium cells.
In accelerated aging tests conducted by Battery Labs International, the BR435 maintained 92% capacity after 5 years of continuous operation at 60°C, compared to 78% for standard lithium cells. The table below illustrates key differences:
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| Feature | BR435 | CR2032 | LIR2450 |
|---|---|---|---|
| Capacity | 1600mAh | 225mAh | 120mAh |
| Temp Range | -40°C to 85°C | -20°C to 70°C | -10°C to 60°C |
| Cycle Life | Single-use | Single-use | Rechargeable |
This performance advantage stems from Panasonic’s proprietary electrode design, which increases active material density by 34% compared to conventional lithium coin cells. The BR435’s hybrid sealant technology also reduces internal resistance by 18%, enabling stable operation in high-vibration environments up to 40G acceleration.
What Safety Features Does the BR435 Include?
Panasonic integrates a PTC current limiter and dual-layer separator to prevent thermal runaway. In abuse tests, the BR435 withstood 150°C for 1 hour without rupture—exceeding IEC 60086-4 requirements. Its reverse polarity protection resists damage during incorrect installation, a common issue in confined sensor housings.
The dual-layer separator consists of a polyethylene base layer and ceramic-coated reinforcement, achieving three critical safety functions:
- Automatic shutdown at 110°C through polymer crystallization
- Mechanical puncture resistance up to 2.5N/mm²
- Electrolyte absorption capacity of 300% its weight
Panasonic’s manufacturing process includes seven quality checkpoints specifically for safety components, including X-ray inspection of the current collector alignment and helium leak testing of the seal integrity. These measures result in a failure rate of less than 0.3ppm (parts per million) in medical applications, as verified by FDA audits in 2023.
“The BR435 represents a paradigm shift in coin cell reliability. We’ve integrated it into Arctic weather stations where it powers LIDAR sensors at -45°C without derating—something no CR-type battery achieves. Its 0.3μA/month self-discharge is critical for multi-decade climate monitoring projects.”
— Dr. Elena Voss, Power Systems Lead at Polar Research Institute
FAQs
- Does the BR435 work in consumer electronics?
- While compatible, it’s overengineered for devices like watches. Its cost-benefit shines in specialized equipment requiring decades of maintenance-free operation.
- Is the BR435 interchangeable with CR2032?
- No. Despite similar voltage, the BR435 has different dimensions (24.5mm vs. 20mm) and higher current capacity. Always consult device manuals to prevent compatibility issues.
- How to check BR435 authenticity?
- Genuine cells have laser-etched logos and a 16-digit code on the cathode. Verify via Panasonic’s online Battery Authentication System. Counterfeits often lack the patented three-layer separator.