On July 15, 2026, Envision Energy's Yichang facility officially commenced mass production of its 790Ah large-format prismatic wound cells, with the first batch shipped immediately to international customers. This marks a significant milestone in the energy storage industry, as the cell is the largest of its kind currently available.
The 790Ah cell delivers a nominal energy exceeding 2.5 kWh, a volumetric energy density surpassing 440 Wh/L, and a DC round-trip efficiency of at least 96%. With a cycle life of over 12,000 cycles, it ensures a service life of more than 30 years, making it a highly durable solution for utility-scale and commercial storage applications.
The project was completed in just 262 days from groundbreaking to production, demonstrating Envision's rapid capacity replication capabilities and its ability to meet surging global demand for high-performance storage systems. The cell has already secured international certifications for over 20 markets, facilitating expedited deployment across regulated regions.
This development directly impacts B2B buyers in the energy storage supply chain. The availability of a 790Ah prismatic cell with extended cycle life and high efficiency reduces the total cost of ownership for large-scale projects, while also simplifying system design by requiring fewer parallel connections. For integrators, this means lower balance-of-system costs and improved reliability.
Furthermore, the rapid production ramp-up signals a maturing supply chain capable of supporting multi-gigawatt-hour projects. Buyers should anticipate shorter lead times and increased competition among cell suppliers, which may drive further innovation in form factors and chemistry. The certifications across 20+ markets also streamline regulatory compliance for cross-border procurement.
The mass production of a 790Ah cell sets a new benchmark for large-format energy storage, influencing cell design trends. For B2B clients in the drone and robotics sectors, this highlights the importance of specialized, high-rate cells often not found in standard inventory. The selection tool at https://tool.liion-batt.com helps find the right custom solution quickly.
