On January 6, 2026, the TZST testing team officially commenced its annual -40°C extreme cold weather product testing in northern China. This marks the third consecutive year that TZST has conducted on-site testing under harsh natural conditions to validate product performance and uphold its commitment to quality and customer value.
Compared to previous tests, this year’s location has been shifted to the Heihe region, where the average winter temperature drops to -20.5°C and the extreme minimum can reach -42°C. This change not only expands the geographical scope of testing but also demonstrates TZST’s proactive approach to upgrading testing standards and continuously pushing the limits of product performance, reflecting the company’s relentless pursuit of excellence.
The most notable highlight of this year’s testing is the inclusion of sodium-ion battery products for the first time. The newly introduced sodium-ion batteries for motorcycles will face the ultimate challenge of -40°C extreme cold, with a focus on validating their ability to maintain high-capacity output under such conditions. Meanwhile, the well-proven series of truck-starting lithium batteries will undergo another round of even more rigorous testing. The parallel testing of both established and new products not only consolidates TZST’s strengths in traditional technologies but also showcases its strategic commitment to embracing and leading the development of next-generation battery technologies.
The testing will simulate various extreme usage scenarios that customers may encounter during severe winter conditions. Core performance indicators, including cold-start capability, cycle life, capacity retention rate, and safety stability, will be continuously monitored and data-logged under long-duration, high-intensity conditions. The real-world performance of sodium-ion batteries in extreme cold will be a key focus of this testing, and the data collected will provide critical insights for the industrialization and further optimization of this technology.
We will continue to release updates on the testing progress and detailed results. Stay tuned for TZST’s in-depth validation of product performance in extreme cold environments, and look forward to the new technological breakthroughs and quality certifications that will emerge from this endeavor.
