HiTHIUM, the Chinese energy storage company, appeared at the fourth Hong Kong International Innovation and Technology Exhibition, or InnoEX, on April 13, presenting a range of battery and storage system products as it highlighted its long-duration storage strategy and broader international ambitions.
The company said it attended the event at the Hong Kong Convention and Exhibition Centre as the only invited new energy storage technology representative from Fujian province, under a joint invitation from the Fujian provincial science and technology department and the Hong Kong Trade Development Council.
InnoEX, co-organized by Hong Kong’s Innovation, Technology and Industry Bureau and the Hong Kong Trade Development Council, focused this year on themes including AI applications, robotics, the low-altitude economy and new energy.
HiTHIUM used the exhibition to present what it described as a full-chain portfolio spanning “cell-system-scenario” capability. On the battery side, it displayed products across lithium-ion and sodium-ion chemistries, including 314Ah, ∞Cell 587Ah, ∞Cell 1175Ah and ∞Cell N162Ah sodium-ion batteries. The company said its 1175Ah and 587Ah products form a “dual-engine” large-capacity offering aimed at long cycle life and low degradation, while its sodium-ion battery is suited to more complex operating environments because of its wide temperature range, safety features and 20,000-cycle life.
On the systems side, HiTHIUM presented its ∞Power 6.25MWh energy storage system, based on its in-house ∞Pack+ platform and designed for flexible two-hour and four-hour configurations. It also exhibited a 261kWh commercial and industrial storage system and products from its HeroEE residential range.
During a roadshow session, Zhang Qin, a research and development manager at HiTHIUM, outlined the company’s view that long-duration storage is becoming increasingly important as wind and solar penetration rises in major economies and electricity demand from AI computing centers grows. According to the company, these trends are intensifying curtailment, making renewable integration harder and increasing pressure on grid stability.
HiTHIUM said it is focusing on long-duration storage as a strategic direction and is pursuing what it called an “internationalized, integrated and branded” development strategy. The company added that it would continue to deepen global co-operation and combine technological innovation with industrial development.
HiTHIUM also expressed the willingness to establish a research and development center in Hong Kong’s Hetao Shenzhen-Hong Kong Science and Technology Innovation Co-operation Zone. Zhang said the company chose Hong Kong for its role as an international hub and its proximity to mainland China, adding that the planned center would focus on long-duration storage technology and sodium-ion battery products.
The company said it has production bases in Xiamen, Chongqing, Heze and Texas, and operations in more than 20 countries across North America, Australia and Europe. According to Infolink Consulting, HiTHIUM ranked second globally in energy storage battery shipments in 2025.
