At RE+ 25 in Las Vegas, Sunwoda introduced two new high-capacity energy storage cells—the 684Ah and 588Ah models—to address the growing demands of global energy storage markets.
“The launch of the 684Ah and 588Ah energy storage cells marks a significant milestone in Sunwoda’s ongoing innovation and advancement of large-capacity energy storage technologies,” said Dr. Sam Chen, General Manager of the BESS BU at Sunwoda.“The company is committed to building a mature and reliable product portfolio that addresses diverse application scenarios, delivering greater lifecycle value and investment returns for our customers.”
The 684Ah cell leverages advanced stacking technology to deliver energy density exceeding 440 Wh/L. Its integrated thermal-electric separation and three-dimensional heat dissipation structure support safe, stable operation over a service life of more than 20 years. The cell is designed for modular compatibility with 10-, 20- and 30-foot containers, cutting container requirements by 27%, reducing assembly time, lowering costs and decreasing levelized cost of energy by 8%. Sunwoda plans to begin mass production in the fourth quarter of 2025 to meet accelerating market needs.
The 588Ah cell employs a refined winding technique combined with a low-lithium-loss formulation to achieve over 10,000 charge-discharge cycles at 70% state of health, translating to more than two decades of reliable performance. With 96.5% round-trip energy efficiency, enhanced electrolyte safety features and a directional venting design, the cell offers long-term stability and cost effectiveness for diverse applications.
Sunwoda has been recognized as one of the top ten energy storage cell suppliers in the first half of 2025 and holds Tier 1 status from BloombergNEF. The company’s international manufacturing network—spanning China, Thailand, Hungary and other locations—ensures localized, efficient supply chain support for customers worldwide.
Building on nearly three decades of innovation in lithium-ion technology, Sunwoda continues to expand its product portfolio and global footprint. The introduction of the 684Ah and 588Ah cells underscores the company’s commitment to advancing large-capacity energy storage solutions and supporting the transition to a more sustainable energy future.
Source: PR Newswire
