On December 5, Ener Hexon® Aurora 5015, a containerized liquid-cooled energy storage system independently developed by YOTAI, successfully passed the rigorous testing of TÜV NORD and was awarded three major international authoritative certifications: CE-LVD (EN 62477-1), CE-EMC (IEC 61000), and CB (IEC 63056). This breakthrough makes Aurora 5015 one of the world’s first 5 MWh-class energy storage products to obtain all three key certifications, backed by both EU CE and global CB authority, enabling seamless market access in 54 countries and securing a first-mover advantage for entering global markets. Chen Guozhang, Deputy General Manager of YOTAI’s Overseas Business Division, attended the certification ceremony.

The CB certification is a global mutual recognition system established by the International Electrotechnical Commission (IEC). By unifying international standards (IEC standards) and enabling mutual recognition of test results among member countries, it simplifies the global certification process for electrical products, saving both cost and time. With the principle of “one test, accepted in many countries,” CB is known as the “golden key” for electrical products to enter global markets. CE certification, on the other hand, is a mandatory requirement for access to the EU market.

All three certifications obtained by Aurora 5015 this time are formulated by the IEC and adopted by the European Committee for Electrotechnical Standardization (CENELEC). Among them, CE-LVD (EN 62477-1) is the international benchmark for electrical equipment safety, CE-EMC (IEC 61000) is the international benchmark for electromagnetic compatibility of industrial equipment, and CB (IEC 63056) is the international benchmark for energy storage battery safety. The certification results are mutually recognized by 54 countries worldwide and are widely acknowledged across global markets. Securing these three certifications proves that Aurora 5015 meets international safety standards, can operate stably in industrial environments with strong electromagnetic interference, and does not disturb surrounding equipment. In addition, Aurora 5015 has also obtained IEC 62619, IEC 60730, and EN IEC 61000 certifications issued by TÜV SÜD.

Aurora 5015 becoming one of the first 5 MWh-class energy storage products with all three major certifications is no coincidence, but rather the inevitable outcome of YOTAI’s long-standing adherence to its 3S philosophy (Safety, Simplicity, Smartness), continuous technological innovation, and steadfast commitment to an internationalization strategy.

From a technology perspective, Aurora 5015 adopts 314 Ah high-capacity cells to increase the energy capacity of a 20-foot single cabin to 5.015 MWh. To address new technical challenges brought by large capacity, such as heat dissipation uniformity, superimposed electromagnetic interference, and cell consistency control, YOTAI has innovatively adopted a “modular design + intelligent balancing technology” approach, combined with a highly efficient CTP liquid-cooling 3.0 system architecture. This achieves cell-level balancing and cluster-level management, avoiding inter-cluster circulating currents, keeping the temperature difference within the Pack below 2.5°C, and extending system service life by 15%. Together with six layers of safety protection—pre-warning, detection, prevention, isolation, venting, and suppression—plus coordinated linkage with the BMS and three-dimensional detection of gas, temperature, and smoke, the system delivers ultra-early warning and a comprehensive upgrade in safety. Successfully resolving the industry pain point of “the difficulty of balancing large capacity with safety and compliance” is the latest manifestation of YOTAI’s strong technological capabilities, built on annual R&D investment of over 150 million and a dedicated R&D team of more than 300 people.

From an internationalization perspective, YOTAI established a dedicated “International Certification Taskforce” at the early stage of product development, breaking down the technical requirements of international standards into product design indicators and integrating them into the full “cell–module–system” design chain from the outset, rather than making supplementary modifications later. The team has also proactively benchmarked against the EU’s new Battery Regulation, the CB Scheme’s mutual recognition rules, and other extended requirements to ensure that the product not only meets basic certification standards but is also aligned with the latest regulatory developments in target markets. Furthermore, core components such as cells, BMS, connectors, and insulation materials have all passed international certifications including UL and VDE, ensuring system compliance from the source. This advanced compliance mindset stems from YOTAI’s extensive international experience: the company has established branches in the United States, Europe, Saudi Arabia, and Singapore, with business coverage across five continents and 23 countries and regions. Currently, Aurora 5015 has already been deployed in multiple countries and application scenarios, including a PV-plus-storage project in Hungary and the first MW-class “PV-storage-diesel microgrid” project on the Arabian Peninsula.

As one of the first products in its class to achieve full coverage of these three certifications, Aurora 5015 has become a benchmark in the industry. It signifies that YOTAI’s technological strength and product quality have reached an advanced international level, significantly enhancing customer confidence, supporting YOTAI’s participation in large-scale international project tenders, and consolidating its leading position in global markets. Amid accelerating global energy transition and surging demand for energy storage, compliance will become a key metric for evaluating a company’s brand strength and product competitiveness.