I. Challenges and Industry Needs of Energy Storage Technology in Extremely Cold Environments

In high-latitude regions such as North America and Northern Europe, winter temperatures typically drop below -20°C, and in extreme conditions can reach -40°C. Traditional battery-powered solutions have significant technical limitations in low-temperature scenarios: capacity shrinks drastically, internal resistance rises sharply, and they cannot provide continuous and stable power support for outdoor equipment, severely restricting the normal operation of outdoor electronic devices in high-latitude regions.

With the large-scale global deployment of the Internet of Things (IoT) and smart meters, the application requirements for energy storage devices have shifted from "room temperature adaptability" to "all-climate tolerance," making stable energy storage across the entire temperature range an inevitable direction for industry development. At the same time, the new EU battery regulation (EU 2023/1542) has established stringent standards for product carbon footprint, use of recycled materials, and compliance certification. Furthermore, traditional batteries, being classified as hazardous materials, face high costs and complex processes in transportation and storage, forcing the industry to explore safer, more compliant, and more economical alternative energy storage solutions.

II. Yongming SLR Series Hybrid Supercapacitor Technology Solution

Yongming Electronics, leveraging innovative breakthroughs in its material systems and optimized product structure, has launched the SLR series hybrid supercapacitors. With its core advantage of stable operation at -40℃ ultra-low temperatures, these supercapacitors provide all-weather, highly reliable energy storage support for various outdoor equipment such as IoT terminals, smart meters, automotive electronics, container positioners, and tower base station monitoring, successfully overcoming the challenges of all-climate energy storage.

1. Ultra-wide Operating Temperature Range, Covering Extremely Cold Application Scenarios

The SLR series hybrid supercapacitors can achieve stable operation across a full temperature range of -40℃ to +85℃. In extremely cold conditions of -40℃, they can directly cold-start without the need for additional heating equipment. This fundamentally solves the industry pain point of traditional batteries freezing their electrolyte and failing to function properly in low-temperature environments, making them fully adaptable to the long-term deployment needs of outdoor equipment in high-latitude, extremely cold regions.

2. Low-Temperature Capacity and Internal Resistance Stability Design

Addressing the core pain points of traditional energy storage devices—severe capacity decay and rapid increase in internal resistance at low temperatures—Yongming Electronics has optimized the electrolyte formula and improved the electrode structure, giving the SLR series excellent low-temperature performance. Specific parameters are as follows:

- Capacity Stability: At room temperature (25℃), the capacity deviation range is -10% to +30%; in extremely cold environments (-40℃), capacity decay is controlled within 30%, ensuring sufficient energy supply during low-temperature startup and guaranteeing normal equipment startup and operation.

- Internal Resistance Controllability: After high and low temperature cycling tests, the internal resistance change of this series of products does not exceed four times the initial value, and the material structure remains stable, effectively preventing equipment malfunctions caused by uncontrolled internal resistance growth at low temperatures.

3. EU Regulatory Compliance Advantages

The SLR series products belong to the capacitor category and are not subject to the new EU battery regulations (EU 2023/1542). They do not require complex certification processes such as carbon footprint declarations and due diligence, significantly reducing compliance costs and shortening the compliance cycle for exporting to the EU, thus enhancing the product's international market competitiveness.

4. Ultra-Long Lifespan and Low Maintenance Costs

This series of supercapacitors utilizes physical energy storage principles, with a charge-discharge cycle life of no less than 250,000 cycles. This perfectly matches the 10-year design life of outdoor equipment, effectively reducing the number of replacements and maintenance tasks throughout the energy storage device's lifespan, significantly lowering the overall equipment maintenance costs.

III. Typical Application Cases

1. Extreme Cold Energy Storage Solution for Container Positioners
Challenge: In -40℃ high-altitude and cold-weather air/land transportation scenarios, traditional batteries experience capacity degradation exceeding 50%, easily leading to positioning interruptions, data loss, and high replacement costs.

Solution: Utilizing Yongming 3.8V SLR series hybrid supercapacitors, with a capacity retention rate of ≥70% at -40℃, a cycle life exceeding 100,000 cycles, low self-discharge, and no risk of thermal runaway.

Results: Uninterrupted positioning throughout the year in extremely cold environments, reducing maintenance costs by over 60%.

2. Low-Temperature Protection Solution for Tower Base Station Monitoring

Challenge: In extreme environments of -40℃, traditional batteries suffer severe degradation, leading to frequent power outages, data loss, and significant maintenance pressure.

Solution: The SLR series supports operation from -20℃ to +85℃, has 10 times the capacity of conventional supercapacitors of the same volume, and supports 20C charging, 30C discharging, and 50C instantaneous peak discharge.

Results: Stable operation 24/7, reducing manual inspection frequency by 80%, and completely resolving the low-temperature power outage problem.

IV. Authoritative Certifications and Technical Support Yongming SLR series products have passed authoritative third-party certifications such as AEC-Q200, State Grid Measurement Center, UN38.3, and UL810A, and support air freight; materials comply with RoHS and REACH environmental requirements, ensuring comprehensive performance and safety.

For specifications, low-temperature test data, sample requests, or customized extreme cold energy storage solutions, please contact us at any time.