Narada Power launches 783 Ah cell, 8.3 MWh solid state battery

The 13th Energy Storage International Summit & Exhibition (ESIE 2025), held in Beijing earlier this month, featured a flurry of product launches across the energy storage landscape. Most of the newly unveiled systems and components are currently available only in China, with international versions still in development.

Technological innovation at the event clearly pointed toward a trend of increasing energy density – both at the system level and, more notably, at the cell level, where the emergence of 587 Ah cells signaled a new industry benchmark. While many of these products are not yet in mass production, there was a noticeable lack of chemistry diversification among the latest-generation offerings.

Lithium iron phosphate (LFP) continues to dominate as the undisputed leader in energy storage chemistry. However, Chinese manufacturer Narada Power stood out as one of the few companies showcasing alternatives. It unveiled its latest liquid-cooled energy storage system, the Center L Max, which is based on solid-state battery technology.

Housed in a 20-foot container, the 8.338 MWh AC/DC system integrates Narada’s proprietary 783 Ah high-capacity solid-state battery cells—a major milestone following the company’s earlier development of a 30 Ah all-solid-state battery cell.

Narada’s R&D team has achieved a leap in both energy density and safety performance through three core technological innovations: flexible biphasic oxide solid electrolyte, multi-layer heterogeneous composite structure design, and in-situ electrolyte film formation technology.

To overcome the traditional challenges of high brittleness and large interfacial resistance in oxide electrolytes, Narada developed a flexible biphasic oxide solid electrolyte. By fine-tuning the material’s microstructure, the new electrolyte achieves enhanced flexibility and mechanical strength, effectively minimizing the risk of cracking, the manufacturer said.

According to Narada, this electrolyte delivers a high ionic conductivity of 10⁻³ S/cm, a wide electrochemical window, excellent air stability, and cost-effectiveness, positioning it well for large-scale industrial adoption.

Solid-state batteries often suffer from poor “solid-solid” interfacial contact, which can result in high resistance and poor cycling performance. To address this, Narada has developed a proprietary in-situ electrolyte film formation technology that allows the electrolyte to penetrate the electrode and self-assemble into a thin, flexible film. This film forms a conformal coating around active particles, significantly reducing interfacial resistance and improving electrochemical performance.

The company’s 783 Ah ultra-high capacity solid-state battery cell employs a multi-layer heterogeneous composite structure in its electrolyte design.

This includes a lithium-conducting (LiCon) functional layer that enables fast ion transport, and a silicon-based interfacial layer that enhances contact between solid components. According to Narada, this dual-layer design improves mechanical strength, boosts interfacial ion transfer, and enhances overall compatibility between materials.

Thanks to these three core technology innovations, the Narada 783 Ah solid-state battery cell delivers more than 10,000 cycles, single-cell energy above 2.5 kWh, energy efficiency exceeding 95%, and volumetric energy density greater than 430 Wh/L.

While solid-state batteries are generally associated with higher energy density than traditional lithium-ion chemistry, recent advancements in LFP technology have narrowed the gap. For instance, 430 Wh/L energy density of Narada’s solid-state cell is equal to the one of 587 Ah LFP battery cells offered by CATL and Gotion.

As of publicataion, pricing comparisons between the latest technologies remain unavailable. However, Narada’s offering also distinguishes itself with the inherent safety advantages of solid-state technology, which eliminates flammable liquid electrolytes and offers superior thermal stability.