The global energy transition is accelerating, with energy storage evolving from a supportive component to a core pillar connecting renewable energy and the power grid. According to predictions from BloombergNEF and the International Energy Agency, the global installed capacity of new energy storage is expected to expand at a compound annual growth rate of 30%-40% before 2030. Against this backdrop, energy storage cells featuring large capacity, high safety, and long lifespan have become a critical technological breakthrough for reducing the levelized cost of storage and enhancing system integration efficiency.

At this pivotal stage of industry transformation, the 2025 International Digital Energy Expo opened on September 18th at the Shenzhen Convention and Exhibition Center. Sunwoda made a significant impact by launching two new energy storage cells – the 684Ah and the 588Ah – addressing industry pain points through technological innovation and providing diverse, reliable solutions for the high-quality development of the energy storage industry.

Building a Portfolio: "Dual-Cell" Strategy Showcases Technical Prowess

Sunwoda's 684Ah energy storage cell utilizes an advanced stacking process, achieving a volumetric energy density exceeding 440 Wh/L, which stands out among products of similar specifications. It innovatively integrates a "thermoelectric separation" design with a three-dimensional heat dissipation structure, fundamentally optimizing thermal management pathways to significantly enhance system operational safety and long-term reliability. In terms of performance, this cell delivers a service life of over 20 years, meeting long-term operational needs.

Notably, it offers excellent compatibility for system integration, adaptable to various containerized solutions including 10-foot, 20-foot, and 30-foot specifications. Leveraging its high energy density and simplified installation and maintenance, this cell reduces the full lifecycle levelized cost of storage by 8% compared to traditional solutions, effectively accelerating project deployment and improving operational economics.

The 588Ah energy storage cell employs a mature, market-proven winding process combined with an innovative low-lithium-loss technology. This effectively mitigates capacity degradation during long-term operation, achieving a cycle life of up to 10,000 cycles @ 70% SOH and a service life exceeding 20 years, demonstrating exceptional economy throughout its lifecycle. With an energy efficiency as high as 96.5%, and complemented by high-safety electrolyte and a directional venting design, this product ensures safe and stable system operation while further optimizing the levelized cost of storage. It provides an excellent cell choice for applications with stringent economic requirements.

Technology Leadership: Driving Industry Upgrade

Mr. Chen Tao, General Manager of Sunwoda's Energy Storage Cell Business Unit, previously stated: "The launch of the 684Ah and 588Ah energy storage cells is a significant reflection of Sunwoda's continuous innovation and commitment to advancing large-capacity energy storage technology. It has always been Sunwoda's founding principle to create products and solutions characterized by high safety, high quality, high reliability, catering to diverse scenario needs."

With the introduction of the 684Ah and 588Ah cells, Sunwoda has built a comprehensive energy storage product portfolio covering multiple technical routes and capacity specifications. While utilizing stacking and winding processes respectively, these two cells share the core advantages of long lifespan, high efficiency, and excellent economics. They empower diverse energy storage scenarios, providing more precise and reliable solutions.

Looking ahead, Sunwoda will continue to strengthen its technological innovation and manufacturing capabilities. Through energy storage products offering higher energy density, longer service life, and superior system value, the company aims to drive the global energy transition and sustainable development.

Ecosystem Expansion: Enhancing Digital Energy Layout

The innovative breakthroughs of these two cells are underpinned by Sunwoda's nearly three decades of comprehensive experience in the lithium battery industry. Today, Sunwoda has transcended the boundaries of a traditional battery manufacturer, committed to providing green and efficient integrated new energy solutions. Its extensive product matrix covers consumer batteries, EV batteries, and energy storage systems, offering global customers comprehensive solutions ranging from cells, modules, and systems to battery testing and recycling. At this exhibition, the company also highlighted its Battery Passport and Battery Recycling solutions, further solidifying its digital energy ecosystem layout.

The Battery Passport serves as a digital ID for a battery's full lifecycle, mandating the disclosure of eight major categories of sustainability data, becoming a crucial pass for companies entering the EU market. Leveraging its full lifecycle data platform, Sunwoda ensures data integrity through triple-source collection, reduces manual auditing by 90% using AI verification, integrates 22 international standards, cuts certification cycles by 88%, and guarantees data security via high-standard encryption and blockchain backup technology.

Battery recycling is a vital part of Sunwoda's "Five-Comprehensive" business strategy, particularly its full-industry-chain layout. With Shenzhen as its hub, the company actively promotes the construction of multiple bases nationwide, striving to build a circular economy network with global reach. Focusing on core areas of lithium battery recycling and cascade utilization, Sunwoda is establishing the entire industry chain from "collection – regeneration – application," comprehensively enhancing its integrated service capabilities in lithium battery recycling and echelon use.