ER26500M Spiral Type LiSOCL2 Battery 3.6V: The High-Power Solution for Intelligent Meters & Detectors

ER26500M Spiral Type LiSOCL2 Battery 3.6V: The High-Power Solution for Intelligent Meters & Detectors

In the era of smart infrastructure and industrial digitization, reliable power sources are the backbone of critical devices like intelligent water meters, gas meters, PLC memory modules, and detectors. These devices demand a battery that combines high power output, long-term stability, compact design, and uncompromising safety—especially as they often operate in hard-to-reach locations or harsh environments with minimal maintenance. For engineers, manufacturers, and facility managers seeking a power solution that meets these rigorous demands, the ER26500M High Power Spiral Type LiSOCL2 Battery emerges as the industry-leading choice.

Engineered by SERUI Battery (www.serui-battery.com), a pioneer in lithium battery technology with 17 years of expertise, the ER26500M 3.6V primary lithium battery leverages spiral type construction and advanced LiSOCL2 chemistry to deliver exceptional performance. As a C-size battery designed for high-power applications, it addresses the unique needs of intelligent IC water meters, gas meters, PLC memory backup, and detectors—offering a seamless blend of power, durability, and longevity. In this comprehensive guide, we will explore the technology behind the ER26500M, its key features, real-world applications, and competitive advantages, highlighting why it has become the preferred spiral type battery and LiSOCL2 battery for smart devices worldwide.

Understanding the ER26500M: Spiral Type Construction & LiSOCL2 Chemistry

To fully appreciate the ER26500M’s performance, it is essential to delve into its core technologies: spiral type battery design and lithium thionyl chloride (LiSOCL2) chemistry. These two elements work in synergy to create a high-power, long-lasting battery that outperforms traditional alternatives in smart meter and detector applications.

Spiral Type Battery Design: The Key to High Power & Stability

The ER26500M is distinguished by its spiral type (also known as spiral-wound) construction—a design that sets it apart from conventional cylindrical batteries with stacked electrodes. In a spiral type battery, the cathode, anode, and separator are layered and then wound into a tight spiral, maximizing the surface area of the electrode materials while minimizing internal resistance. This innovative design delivers two critical benefits for high-power applications:

1. Enhanced Current Output: The increased electrode surface area allows for faster ion transfer between the cathode and anode, enabling the ER26500M to deliver higher continuous and pulse current compared to non-spiral batteries of the same size. For intelligent meters and detectors that require periodic high-power pulses (e.g., data transmission, valve actuation, or alarm triggers), this design ensures reliable performance without voltage drop or power loss.

2. Improved Thermal Management: Spiral winding distributes heat evenly across the battery’s internal structure, reducing the risk of hotspots during high-power discharge. This thermal stability is crucial for devices operating in enclosed spaces (e.g., meter boxes, industrial control panels) where heat buildup can degrade battery performance or pose safety risks.

3. Structural Robustness: The spiral design creates a rigid internal structure that resists vibration, shock, and physical stress—common challenges in industrial or outdoor environments where smart meters and detectors are often installed. This robustness ensures the battery maintains integrity and performance over its entire service life.

Unlike prismatic or stacked batteries, which are prone to internal resistance buildup and uneven discharge, the ER26500M’s spiral type construction guarantees consistent performance, making it ideal for high-power, long-term applications.

LiSOCL2 Chemistry: The Gold Standard for Primary Battery Performance

Lithium thionyl chloride (LiSOCL2) chemistry is widely recognized as the premier choice for primary (non-rechargeable) batteries in critical applications. Its unique chemical reaction—where lithium (anode) reacts with thionyl chloride (cathode and electrolyte)—delivers a range of advantages that align perfectly with the needs of intelligent meters, PLC memory modules, and detectors:

• High Energy Density: LiSOCL2 batteries offer one of the highest energy densities of any primary battery technology, allowing the ER26500M to store substantial power in a compact C-size form factor. This means longer service life for devices, reducing maintenance frequency and costs.

• Low Self-Discharge Rate: LiSOCL2 batteries exhibit an extremely low self-discharge rate (typically less than 1% per year), enabling the ER26500M to retain over 90% of its capacity after 10 years of storage. For devices that remain in standby mode for extended periods (e.g., emergency detectors, backup memory modules), this ensures reliable power when needed most.

• Stable Discharge Voltage: Unlike alkaline batteries, which experience a gradual voltage drop as they discharge, LiSOCL2 batteries maintain a nearly constant voltage throughout their service life. This stable output ensures that smart meters and detectors operate with precision, delivering accurate readings and consistent performance.

• Wide Operating Temperature Range: LiSOCL2 chemistry is inherently stable across a broad temperature spectrum, typically -55℃ to +85℃. This makes the ER26500M suitable for installation in extreme environments—from freezing outdoor meter boxes to hot industrial facilities—without compromising performance.

By combining spiral type construction with LiSOCL2 chemistry, the ER26500M delivers a high-power battery solution that excels in the most demanding smart device applications.

Technical Specifications of the ER26500M Spiral Type LiSOCL2 Battery

The ER26500M is engineered to meet the precise requirements of intelligent IC water meters, gas meters, PLC memory modules, and detectors. Below is a detailed breakdown of its technical specifications, highlighting how each parameter contributes to its exceptional performance:

These specifications are the result of rigorous engineering and testing, ensuring the ER26500M meets the highest standards for performance, reliability, and safety. Whether powering a smart meter’s data logging function or a detector’s alarm system, this spiral type LiSOCL2 battery delivers consistent, high-quality power.

Core Advantages of the ER26500M: Why It Outperforms Competitors

The ER26500M Spiral Type LiSOCL2 Battery stands out in the market due to its unique combination of high power, long service life, safety, and versatility. Below are the key advantages that make it the top choice for intelligent meters, PLC memory modules, and detectors:

1. High Power Output for Demanding Smart Devices

Intelligent water meters, gas meters, and detectors are no longer just simple measurement tools—they now incorporate advanced features like wireless data transmission, remote monitoring, and automatic valve control, all of which require high-power pulses. The ER26500M’s spiral type construction and LiSOCL2 chemistry enable it to deliver exceptional power output, supporting both continuous low-current operation and intermittent high-current demands.

For example:

• Smart Meters: Intelligent IC water and gas meters require steady power for continuous flow measurement (low current) and periodic high-power pulses to transmit usage data to utility companies (high current). The ER26500M’s low internal resistance ensures that these pulses do not cause voltage dips, preventing data transmission failures or inaccurate readings.

• Detectors: Fire, gas, or motion detectors need instant high-power output to trigger alarms, activate lights, or send alerts to security systems. The ER26500M’s spiral design allows it to release power quickly, ensuring alarms are loud and responsive when a threat is detected.

• PLC Memory Modules: Programmable Logic Controllers (PLCs) rely on backup power to protect critical data during power outages. The ER26500M’s high power ensures that memory modules retain data for extended periods, preventing data loss and system downtime.

Unlike traditional alkaline or lead-acid batteries, which struggle to deliver high-power pulses without performance degradation, the ER26500M maintains consistent power output throughout its service life.

2. Long Service Life: Minimizing Maintenance Costs

One of the biggest challenges with smart meters and detectors is their installation in hard-to-reach locations—such as underground utility boxes, high ceilings, or industrial machinery. Frequent battery replacements are costly, time-consuming, and often require equipment downtime. The ER26500M addresses this issue with its exceptional service life, thanks to LiSOCL2 chemistry’s low self-discharge rate and high energy density.

With a self-discharge rate of less than 1% per year, the ER26500M can power smart meters and detectors for 10–15 years without replacement. This is a significant improvement over alkaline batteries (which typically last 2–3 years) and even other lithium battery types. For utility companies and industrial facilities, this translates to:

• Reduced maintenance costs: Fewer battery replacements mean lower labor and material expenses.

• Minimized downtime: Devices remain operational for longer, avoiding service interruptions.

• Improved reliability: Long service life ensures that devices do not fail unexpectedly due to dead batteries.

The ER26500M’s long service life is not just a convenience—it is a critical factor in reducing total cost of ownership for smart infrastructure.

3. Stable Discharge Voltage: Ensuring Precision & Accuracy

Smart meters and detectors rely on precise electronic components to function correctly. A fluctuating power supply can cause inaccurate readings, false alarms, or system malfunctions—consequences that range from billing errors (for utilities) to safety risks (for detectors). The ER26500M’s LiSOCL2 chemistry delivers a stable discharge voltage, ensuring that connected devices operate with consistent precision.

LiSOCL2 batteries have a flat discharge curve, meaning their voltage remains nearly constant from the first day of use until the battery is fully depleted. For example:

• An intelligent gas meter powered by the ER26500M will record usage accurately for years, avoiding overbilling or underbilling for customers.

• A gas detector will maintain consistent sensitivity, preventing false alarms (from voltage spikes) or missed detections (from voltage drops).

• A PLC memory module will retain data reliably, even as the battery nears the end of its life.

This stability is validated through rigorous testing: the ER26500M’s voltage remains within ±0.1V of its nominal 3.6V until it reaches its cut-off voltage, ensuring uncompromised performance for critical applications.

4. Exceptional Safety: Mitigating Risks in Critical Environments

Safety is paramount for batteries used in residential, commercial, and industrial settings—especially for devices like gas meters or detectors, where battery failure could lead to hazardous situations. The ER26500M is engineered with multiple safety features to minimize risks such as leakage, overheating, short circuits, and explosion.

Inherent Safety of LiSOCL2 Chemistry

LiSOCL2 chemistry is inherently safer than many other battery technologies. Unlike lithium-ion batteries, which can experience thermal runaway if damaged or overcharged, LiSOCL2 batteries are non-rechargeable and have a high thermal stability. This means they do not overheat or catch fire, even in extreme conditions like short circuits or physical damage.

Spiral Type Construction Safety Benefits

The ER26500M’s spiral wound design adds an extra layer of safety:

• Even Heat Distribution: Spiral winding prevents hotspots during high-power discharge, reducing the risk of thermal degradation.

• Structural Integrity: The tight spiral structure resists internal short circuits caused by vibration or shock, a common issue in stacked batteries.

• Leakage Prevention: The spiral design ensures that the electrolyte is evenly distributed and contained, minimizing the risk of leakage that can damage devices or pose safety hazards.

Rigorous Quality Control & Certification

SERUI Battery manufactures the ER26500M under an ISO9001-certified quality management system, with every battery undergoing comprehensive safety testing, including:

• Short-circuit testing: Verifies the battery can withstand accidental short circuits without overheating.

• Leakage testing: Ensures the battery remains sealed, even under extreme temperatures or pressure.

• Temperature cycling testing: Validates safety performance across the -55℃ to +85℃ operating range.

• Overvoltage testing: Confirms stability if exposed to voltage spikes.

The ER26500M is also certified to meet international safety standards, including CE, UL, SGS, and IEC, ensuring compliance with regulations in global markets.

5. Wide Operating Temperature Range: Versatility Across Environments

Smart meters and detectors are installed in a wide range of environments—from freezing outdoor utility boxes to hot industrial facilities. The ER26500M’s LiSOCL2 chemistry and spiral type construction enable it to operate reliably across a temperature range of -55℃ to +85℃, making it one of the most versatile spiral type batteries on the market.

Performance in Extreme Cold (-55℃)

In cold environments—such as northern climates or underground utility vaults—traditional batteries often lose capacity or fail to deliver power. The ER26500M retains over 70% of its nominal capacity at -55℃, ensuring that smart meters and detectors remain operational even in frigid conditions. This is critical for utilities serving cold regions, as it prevents service interruptions during winter months.

Performance in Extreme Heat (+85℃)

In hot environments—such as industrial facilities, rooftop installations, or tropical climates—batteries are at risk of electrolyte evaporation, leakage, or thermal runaway. The ER26500M’s high thermal stability ensures it retains over 85% of its capacity at +85℃, with no risk of safety hazards. This makes it ideal for detectors installed in factories, warehouses, or outdoor spaces exposed to direct sunlight.

This wide temperature range eliminates the need for temperature-specific batteries, simplifying inventory management and reducing costs for manufacturers and end-users.

6. Compact C-Size Form Factor: Seamless Integration

Smart meters, detectors, and PLC memory modules are often designed with limited space for batteries. The ER26500M’s C-size form factor (26mm diameter × 50mm height) is compact enough to fit standard battery compartments, ensuring seamless integration without requiring design modifications.

Despite its small size, the ER26500M delivers exceptional power and capacity—thanks to its spiral type construction and high-energy-density LiSOCL2 chemistry. This balance of size and performance makes it the perfect choice for compact, power-hungry devices where space is at a premium.

Real-World Applications: Powering Critical Smart Devices

The ER26500M Spiral Type LiSOCL2 Battery is tailored to meet the unique demands of intelligent IC water meters, gas meters, PLC memory modules, and detectors. Below is a detailed look at how it performs in these key applications, highlighting its ability to solve real-world challenges.

Intelligent IC Water Meters: Accurate Measurement & Reliable Data Transmission

Intelligent IC water meters are revolutionizing water management, enabling utilities to track usage remotely, detect leaks, and bill customers accurately. These meters require a battery that can power continuous flow measurement (low current) and periodic data transmission (high current) for years without replacement.

The ER26500M is the ideal power solution for intelligent water meters because:

• Stable Voltage: Ensures accurate flow measurement and prevents data transmission errors.

• High Power Pulses: Supports wireless communication (e.g., LoRa, NB-IoT) to send usage data to utility servers.

• Long Service Life: Reduces maintenance costs for utilities, especially for meters installed in underground or hard-to-reach locations.

• Leakage-Proof Design: Protects the meter’s internal electronics from water damage, a common risk in plumbing environments.

Utilities worldwide rely on the ER26500M to power their smart water meters, reporting fewer service calls, lower maintenance costs, and improved customer satisfaction due to accurate billing.

Intelligent IC Gas Meters: Safety & Long-Term Reliability

Intelligent IC gas meters are critical for monitoring gas usage and detecting leaks, making safety and reliability their top priorities. These meters operate in residential, commercial, and industrial settings, often in enclosed spaces where battery failure could lead to gas leaks or explosions.

The ER26500M addresses the unique needs of gas meters by:

• Excellent Safety Performance: Inherent stability of LiSOCL2 chemistry and spiral type construction minimizes the risk of leakage or overheating.

• Low Self-Discharge Rate: Ensures the meter remains operational for 10–15 years, even with minimal use (e.g., vacant properties).

• Stable Discharge Voltage: Supports accurate leak detection and usage measurement, preventing false alarms or missed leaks.

• Wide Temperature Range: Operates reliably in basements, attics, or industrial facilities with extreme temperature fluctuations.

Gas utilities trust the ER26500M to power their smart meters, as it provides the safety and reliability needed to protect consumers and infrastructure.

PLC Memory Backup: Protecting Critical Industrial Data

Programmable Logic Controllers (PLCs) are the backbone of industrial automation, controlling machinery, production lines, and critical processes. PLC memory modules require backup power to retain program data, configuration settings, and operational logs during power outages—data loss can result in costly downtime, production delays, or equipment damage.

The ER26500M is the preferred battery for PLC memory backup because:

• High Power Output: Ensures memory modules retain data for extended periods (months or years) during power outages.

• Stable Voltage: Prevents data corruption by maintaining consistent power to memory chips.

• Long Service Life: Reduces the need for frequent battery replacements in industrial settings, where PLCs are often installed in hard-to-access control panels.

• Shock & Vibration Resistance: Spiral type construction withstands the rigors of industrial environments, ensuring uninterrupted performance.

Manufacturers of PLCs and industrial automation equipment rely on the ER26500M to provide reliable backup power, minimizing the risk of data loss and operational downtime.

Detectors: Responsive Alerts for Safety & Security

Detectors—including fire detectors, gas detectors, motion detectors, and smoke detectors—are critical for protecting lives and property. These devices require instant high-power output to trigger alarms, activate safety systems, or send alerts to monitoring centers, even after years of standby.

The ER26500M excels in detector applications by:

• High-Power Pulses: Delivers the instant current needed to activate loud alarms, strobe lights, or wireless alerts.

• Low Self-Discharge Rate: Ensures the detector remains operational for a decade or more, even in standby mode.

• Wide Temperature Range: Performs reliably in extreme environments, from freezing warehouses to hot factories.

• Safety Features: Prevents leakage or overheating, ensuring the detector does not become a hazard itself.

Security companies, building managers, and industrial facilities choose the ER26500M for their detectors, as it provides the responsiveness and reliability needed to keep people and property safe.

Why Choose SERUI’s ER26500M Spiral Type LiSOCL2 Battery?

With numerous spiral type battery and LiSOCL2 battery options on the market, why should you trust the ER26500M from SERUI Battery (www.serui-battery.com)? Our commitment to quality, innovation, and customer service sets us apart as a leader in lithium battery manufacturing.

1. 17 Years of Expertise in Lithium Battery Technology

Founded in 2004, Guangzhou Serui Battery Technology Co., Ltd. has 17 years of experience designing and manufacturing high-performance lithium batteries, including spiral type LiSOCL2 batteries. Our team of engineers and technicians specializes in battery chemistry, materials science, and manufacturing processes, allowing us to develop products that meet the most demanding industry standards.

Over the years, we have served clients in utilities, industrial automation, security, and consumer electronics worldwide, earning a reputation for excellence. Our focus on research and development ensures that we stay at the forefront of battery technology, continuously improving products like the ER26500M to meet evolving customer needs.

2. ISO9001-Certified Quality Management System

Quality is the foundation of our business, which is why we have implemented an ISO9001-certified quality management system (QMS). This system covers every stage of the manufacturing process—from raw material sourcing and product design to production, testing, and delivery—ensuring that every ER26500M battery meets the same high standards of performance and safety.

We source only the highest-quality raw materials from trusted suppliers, and our production facilities feature state-of-the-art equipment that ensures precision and consistency. Our QMS is regularly audited to maintain compliance, giving our customers the confidence that they are receiving a reliable, high-quality product.

3. Comprehensive Testing & Certification

The ER26500M Spiral Type LiSOCL2 Battery undergoes rigorous testing to validate its performance, safety, and reliability. We subject each battery to a series of tests, including:

• Capacity testing: Verifies the battery delivers the full high-power output and energy density specified.

• Discharge testing: Ensures stable voltage output across different current levels and temperatures.

• Safety testing: Includes short-circuit, overvoltage, leakage, and temperature cycling tests to confirm compliance with international standards.

• Environmental testing: Simulates real-world conditions (vibration, shock, salt spray) to ensure the battery performs in harsh environments.

The ER26500M is certified to meet global safety and performance standards, including CE, UL, SGS, IEC, and RoHS, ensuring compatibility with devices worldwide.

4. Customization Options for Unique Requirements

We understand that every customer’s needs are unique, which is why we offer customization options for the ER26500M. Whether you need a specific connector, wire length, labeling, or packaging, our engineering team can tailor the battery to your exact specifications.

Our customization capabilities include:

• Connectors: Install JST, Molex, AMP, or custom connectors to ensure seamless integration with your device.

• Wire Harnesses: Design and manufacture custom wire harnesses to simplify installation and reduce assembly time.

• Labeling: Print custom labels with your company logo, product information, safety warnings, or batch numbers.

• Packaging: Provide custom packaging for bulk orders, including trays, boxes, or blister packs, to meet your logistics and branding needs.

Our goal is to provide a turnkey power solution that fits your device perfectly, reducing time-to-market and ensuring a smooth integration process.

5. Competitive Pricing & Fast Delivery

We believe that high-quality spiral type batteries and LiSOCL2 batteries should be accessible to all industries, which is why we offer competitive pricing on the ER26500M. Our efficient manufacturing process, economies of scale, and direct-to-customer sales model allow us to provide exceptional value without compromising on quality.

We also maintain a large inventory of ER26500M batteries, ensuring fast delivery for urgent orders. We partner with trusted logistics providers to ship our products worldwide, with typical delivery times of 3–7 business days for international orders and 1–3 business days for domestic orders.

6. Exceptional Customer Service & Technical Support

At SERUI Battery, we are committed to providing our customers with the highest level of service. Our team of customer service representatives and technical experts is available to answer your questions, provide guidance on product selection, and offer support throughout the entire purchasing process.

Whether you need help determining if the ER26500M is the right battery for your application, require technical documentation (datasheets, safety certificates), or need assistance with customization, we are here to help. We also offer after-sales support, ensuring that you are satisfied with your purchase long after delivery.

Conclusion: The ER26500M—Your Trusted High-Power Spiral Type LiSOCL2 Battery

In the world of smart infrastructure and industrial automation, the ER26500M Spiral Type LiSOCL2 Battery from SERUI Battery stands as the gold standard for high-power, long-lasting, and safe power solutions. Designed specifically for intelligent IC water meters, gas meters, PLC memory modules, and detectors, it combines spiral type construction and LiSOCL2 chemistry to deliver exceptional performance in the most demanding environments.

With its high power output, long service life (10–15 years), stable discharge voltage, excellent safety features, wide operating temperature range, and compact C-size form factor, the ER26500M outperforms traditional batteries in every key metric. Backed by SERUI’s 17 years of lithium battery expertise, ISO9001 certification, comprehensive testing, customization options, competitive pricing, and exceptional customer service, it is the preferred choice for engineers, manufacturers, and facility managers worldwide.

If you are looking for an ER26500M, spiral type battery, or LiSOCL2 battery that delivers reliable high power, long-term stability, and uncompromising safety for your intelligent meters or detectors, look no further than SERUI Battery. Visit our website www.serui-battery.com today to learn more about the ER26500M, request a quote, or contact our technical team for personalized support. With SERUI’s ER26500M Spiral Type LiSOCL2 Battery, you can power your critical devices with confidence—now and for years to come.