HiTHIUM unveiled its next-generation integrated sodium-ion energy storage portfolio at its "Powered Day in, Day out" event in Xiamen, China, on September 16, 2026. The launch includes the ∞Power N4.0MWh, a 4MWh system built around the ∞Cell N785Ah sodium-ion battery, with full-scale production and delivery planned for 2027. The system has a 30-year designed service life, supports two- to eight-hour storage durations, and is designed to provide an infrastructure-grade option for large-scale energy storage. Its architecture includes stacked cells, a dedicated battery management system (BMS) with state-of-charge estimation accuracy of no more than 2.5%, and compatibility with 800–1500V power conversion systems (PCS). HiTHIUM said the design increases PCS rated-power utilization by more than 20% over its previous-generation sodium-ion system, cuts station footprint by 30%, and delivers more than 88% comprehensive efficiency over 24 hours. Hybrid air-liquid cooling, AI-enabled thermal management and weather-based cooling control reduce operating auxiliary power consumption by 30% and standby auxiliary power consumption by 50%. The company also introduced the ∞Edge Pioneer Program to test systems in extreme environments, disclose progress over three years and progressively release technology packages, with the goal of advancing storage toward a levelized cost of storage (LCOS) of RMB 0.1 per kWh.