At The Battery Show Europe 2025, which took place from June 3–5 at the Stuttgart Exhibition Centre, Yantai Leawat-Power Technologies CO., Ltd., a prominent Chinese pioneer in large cylindrical battery technology, made a big impression. The business consolidated its position as a major player in the worldwide energy storage and electric mobility industries by introducing its cutting-edge 46-series big cylindrical batteries, showcasing innovations in quick charging, safety, and adaptability.
Innovative Technology Takes Center Stage
Leawat demonstrated its internationally patented “full-current-path” and “tab-less” designs during the expo. The latter is a ground-breaking construction that removes all welding spots and lowers internal resistance by 20%. This invention solves a major problem for EV customers everywhere by enabling ultra-fast charging.
In order to provide effective heat dissipation and consistent temperature distribution throughout the cell, the batteries furthermore have a thermal-electrical decoupling system with a bottom-mounted single-side exhaust valve. These design features, when paired with micro-arc suppression technology, lower the possibility of thermal runaway and satisfy the strictest international safety regulations, including IEC62619.
High Performance for Diverse Applications
Leawat’s 46-series batteries stand out for “Four High” characteristics:
- High Energy Density: Achieving over 5% improvement in system-level energy density through its unique “One-Unit stacking integration” design.
- High Power Output: Supporting ultra-high discharge rates of up to 50C, making them ideal for high-demand applications such as electric vehicles, drones, and industrial robots.
- High Safety Assurance: Reducing the risk of foreign matter intrusion by 75%, with the help of Innovative externalized assembly and self-gravity assisted technologies. Another three pioneering technologies-“stress-relief” “gradual SEI formation” and “distributed electrolyte retention” ensure stable electrode structure, which can significantly increase the cell cycle life to 8000+.
- High Environmental Adaptability: A wide operational temperature range of -40°C to 60°C, enabled by self-developed thermal equilibrium technology, ensures reliable performance in extreme climates.
Global Ambitions and Market Expansion
Not only have the company’s goods received great reviews in China, but European automakers, energy storage firms, and IT entrepreneurs have also taken a keen interest in them. Leawat emphasizes that it is prepared to provide bespoke system solutions and standardized cylindrical cells for a variety of industries, including:
- Electric Mobility: High-end EVs, two-wheelers and eVTOLs.
- Energy Storage: Utility-scale projects, commercial & industrial storage, and residential systems.
- Smart Equipment: Robotics (e.g., service robots, construction machinery) and portable power solutions.
Industrial Scale and Future Plans
Leawat has been running a 25GWh large cylindrical battery project, which is supported by a 180PPM high-speed production line—the fastest of its kind in China. The first phase, with a 4GWh capacity, has achieved strong market response in China. The company aims to achieve full 25GWh capacity by 2027, targeting annual sales of over ¥15 billion ($2.1 billion).
“We are thrilled to introduce our technologies to the global market,” stated Mr. Feng Zihao, Vice General Manager of Leawat. “Our goal is to collaborate with global partners to accelerate the transition to clean energy. With our focus on innovation, safety, and scalability, we believe Leawat will play a pivotal role in shaping the future of lithium battery Industry.”
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