EAS Batteries says its LFP cell with acetonitrile-based electrolyte offers superior performance

German battery maker EAS Batteries has started commercial sales of its UHP601300 LFP 22, a large-format cylindrical LFP cell that uses Asahi Kasei’s Acetolyte—an acetonitrile-based electrolyte. According to the companies, Acetolyte delivers higher ionic conductivity, lower internal resistance and better rate capability across a wider temperature range compared to electrolytes that use conventional carbonate solvents.

The headline numbers compared to EAS cells using conventional electrolyte:

EAS highlights an improvement of 60% in continuous power. The pulse discharge gain is more modest—about 10%—but the continuous discharge number reflects real-world utility for high-rate applications like motorsport, aerospace or heavy industrial equipment where sustained current delivery matters more than brief peak capability. EAS says samples are currently in customer evaluation across multiple industries.

Asahi Kasei says Acetolyte enables better power output at low temperatures and improved durability at high temperatures—both persistent problem areas for conventional carbonate-electrolyte lithium-ion cells.

The companies are also exploring the 46xxx cylindrical format. Prototypes are already available and the company hopes to launch the product this year. This format is designed primarily for low-voltage EV batteries, and EAS and Asahi Kasei hope to sublicense the combined technology to global OEMs and battery manufacturers.

“The short time from signing our license agreement in November 2025 to the start of serial production in March 2026 reflects the focused and highly collaborative efforts between EAS Batteries and Asahi Kasei,” said Osamu Matsuzaki, Senior Executive Officer and Head of Corporate R&D and IP at Asahi Kasei.

Source: EAS Batteries