What Is a LiSOCl₂ Battery and Why It’s Widely Used

Understanding Lithium Thionyl Chloride (LiSOCl₂) Chemistry

The LiSOCl₂ battery is a type of primary lithium cell. It uses thionyl chloride (SOCl₂) as the liquid cathode and lithium metal as the anode. Together, they create a powerful electrochemical system that delivers a nominal voltage of 3.6V—much higher than standard alkaline or NiMH cells.

This chemistry enables LiSOCl₂ batteries to outperform nearly all other primary lithium types in long-term applications. They are commonly used in smart meters, industrial sensors, GPS trackers, and IoT devices—anywhere reliability and endurance are essential.

Key Technical Specifications — Voltage, Capacity, and Temperature Range

• Nominal Voltage: 3.6V
• Operating Temperature: −55 °C to +85 °C
• Self-Discharge Rate: Less than 1% per year
• Shelf Life: Up to 10 years

Thanks to these characteristics, LiSOCl₂ batteries can sit in standby for years and still deliver full performance when activated—ideal for low-drain, long-life applications.

Advantages Over Other Primary Lithium Batteries (Li-MnO₂, Li-FeS₂, etc.)

In short: if you need a long-life, low-maintenance, high-voltage solution, the LiSOCl₂ chemistry is the best lithium battery available.

Popular LiSOCl₂ Battery Models in the Market

ER14250

The ER14250 model is ideal for compact sensors, AMR systems, and memory backup. Although it is small, it delivers a long-lasting 3.6V power, making it perfect for IoT sensors and handheld devices.

ER17335

The ER17335 battery has a larger capacity than ER14250 and balances size and endurance. It’s widely used in smart water and gas meters, ensuring stable operation over years of data transmission.

ER26500

The ER26500 is suitable for industrial data loggers, tracking devices, and telemetry systems. It offers extended service life under demanding conditions.

ER34615

The ER34615 battery is the powerhouse of the LiSOCl₂ family. With capacities exceeding 19,000mAh, it’s commonly used in smart metering, GPS, and remote monitoring systems that require 10+ years of reliable energy.

LiSOCl₂ Battery Manufacturer Comparison: Tadiran vs. PKCELL vs. Others

Energy Density and Longevity Comparison

While several manufacturers offer LiSOCl₂ products, differences in chemistry precision and build quality significantly affect long-term performance. PKCELL battery maintains high energy density with controlled self-discharge—ideal for long-term deployments.

Safety Standards and UN38.3 Certification

Every industrial-grade LiSOCl₂ battery should meet UN38.3, CE, and RoHS certifications to ensure transport safety and reliability. PKCELL and Tadiran both meet these standards, but PKCELL offers more flexible OEM adaptations.

Supply Reliability and OEM Customization Capabilities

PKCELL focuses on OEM integration, offering flexible lead tab designs, connector options, and custom packs for large-scale applications. Tadiran maintains a strong record in the Western market, while PKCELL ensures stable supply and cost-effectiveness for global B2B buyers.

Global Distribution and Technical Support

PKCELL provides global shipping, technical consultation, and OEM assistance, ensuring manufacturers and integrators have consistent support from sample to mass production.

Manufacturer Comparison Table

Why PKCELL Is a Trusted Manufacturer of LiSOCl₂ Batteries

Full Range of Models for Global Industrial Use

PKCELL produces the complete LiSOCl₂ lineup—ER14250, ER17335, ER26500, and ER34615—covering applications from small sensors to large energy modules.

Stable Production and OEM Customization

With large-scale automated production lines, PKCELL ensures stable quality, fast lead times, and tailored OEM services for global clients.

High Quality Control and Long-Term Supply Capability

Every battery undergoes strict testing for voltage, capacity, leakage, and temperature endurance. PKCELL guarantees consistency across every batch, crucial for long-term projects.

Proven Success in Smart Meter and IoT Projects

From smart metering to cold-chain monitoring, PKCELL batteries are already powering global IoT deployments. The company’s technical experience helps integrators reduce design risks and extend device lifespans.

Quote for PKCell LiSoCl2 Battery

Conclusion

In the world of industrial and IoT power, the LiSOCl₂ battery remains the most reliable long-term energy solution.

Among global suppliers, PKCELL stands out with proven quality, OEM flexibility, and commitment to innovation. Whether you need a single-cell ER model or a customized pack, PKCELL can deliver dependable solutions designed to perform.

FAQs About LiSOCl₂ Batteries

What are the most popular LiSOCl₂ battery models?

Common models include ER14250, ER17335, ER26500, and ER34615, covering applications from compact sensors to high-capacity industrial equipment.

Is LiSOCl₂ rechargeable?

No, LiSOCl₂ batteries are non-rechargeable primary lithium cells. Attempting to recharge them can cause leakage or explosion.

Which manufacturer offers the best LiSOCl₂ battery for industrial use?

Manufacturers like PKCELL and Tadiran are top choices. PKCELL stands out for OEM customization, global supply reliability, and cost-effective long-life performance.