Eve Energy has marked a significant milestone in next-generation battery technology by rolling out two new all-solid-state batteries Longquan No. 3 and Longquan No. 4 from its Chengdu manufacturing facility. The production milestone, announced following a rollout ceremony on March 17, highlights the company’s progress toward commercialising solid-state battery solutions.
New Battery Models Target EVs and Consumer Electronics
The Longquan No. 4 battery is designed for electric vehicles and features a capacity of 60 Ah, demonstrating Eve Energy’s ability to scale solid-state technology for automotive applications. The cell can operate under pressures of up to 5 MPa, a key requirement for integration into EV battery packs, indicating early-stage readiness for practical use.
The Longquan No. 3 battery, on the other hand, is made for consumer electronics like smartphones, laptops, and wearable devices. It works well at low pressures below 2 MPa and has a high volumetric energy density, which means that devices can be thinner and last longer.
Production Scale and Commercial Readiness
Even though technology has come a long way, it is still hard to make it work on a large scale. The Chengdu facility currently has a relatively limited annual production capacity of around 500,000 cells, equivalent to approximately 100 MWh. This output would support only a small number of electric vehicles, indicating that further scaling is required before widespread adoption.
Eve Energy is, however, working hard to make more products. The company wants to greatly increase its capacity. Its long-term goal is to reach up to 100 GWh per year as it builds up its manufacturing base and process capabilities for solid-state batteries.
Building a Diverse Battery Portfolio
Eve Energy has been steadily building a comprehensive battery portfolio across consumer, power, and energy storage applications. The Chengdu base, which already hosts a 9 GWh conventional battery production line, has evolved into a key hub for innovation.
The company previously introduced the Longquan No. 2 solid-state battery in September 2025, targeting emerging applications such as humanoid robots, low-altitude aircraft, and AI-driven devices. The latest additions further expand its product range across multiple sectors.
Future Outlook for Solid-State Technology
People think solid-state batteries are the future of energy storage because they have a lot of benefits, like higher energy density, faster charging, better safety, and longer driving ranges for electric vehicles. Eve Energy’s progress shows that more and more people around the world are trying to make this technology useful for businesses.
Eve Energy is one of the best battery makers in the world and keeps putting money into new electrolyte technologies and ways of making things. Even though there are still problems with scaling up production, the launch of the Longquan series is a big step toward getting solid-state batteries used in more industries.
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