EAS Batteries Starts Sales of Ultra-High-Power Cell Using Asahi Kasei’s Novel Electrolyte Acetolyte™
EAS ultra-high-power lithium-ion cell
In November 2025, Asahi Kasei signed a licensing agreement with EAS Batteries covering the use of its electrolyte in the German manufacturer’s cylindrical LFP cells. The launch of the UHP601300 LFP
With a nominal capacity of 22 Ah, the cell delivers 2,550 W/kg under continuous discharge, representing a
UHP-601300-LFP-22 (using Asahi Kasei electrolyte) |
EAS Cell using conventional electrolyte |
|
Continuous discharge |
2,550 W/kg; 880 A (40C) |
1,550 W/kg; 550 A (25C) |
Pulse discharge (2-sec) |
3,760 W/kg; 1,320 A (60C) |
3,420 W/kg; 1,320 A (60C) |
Asahi Kasei and EAS Batteries have agreed to sublicense their combined technologies to global OEMs and battery manufacturers, aiming to expand into mobility applications. The companies are also advancing their collaboration by evaluating the electrolyte’s application in the 46xxx cell format, with a product launch targeted for 2026. Prototypes of the 46xxx cell are already available for testing and are primarily designed for low-voltage electric vehicle batteries.
“The successful commercialisation of our new cell featuring Asahi Kasei’s Acetolyte™ marks another important milestone in our strategic partnership. Our collaboration on the new 46xxx cell format is also progressing smoothly, underscoring the strength of our joint development approach and our ability to accelerate innovation from concept to market readiness,” underlines EAS' Managing Director Michael Deutmeyer.
Osamu Matsuzaki, Senior Executive Officer of Asahi Kasei and Head of Corporate R&D and IP commented, “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. Together, we have translated advanced electrolyte technology into a commercially viable high-power cell within just a few months. Building on this momentum, we are already working on the next cell format and look forward to further advancing high-performance battery solutions.”
Asahi Kasei’s novel acetonitrile-containing electrolyte, Acetolyte™, with high ionic conductivity, enables increased battery power output even at low temperatures and improved durability at high temperatures—an ongoing challenge for current LIBs. Furthermore, this technology reduces costs and enables smaller battery packs, thereby further increasing energy density.
Asahi Kasei announced a medium-term management plan (MTP) in April 2025, outlining the company’s strategy across its three sectors of Healthcare, Homes, and Material. Under the MTP, Asahi Kasei is pursuing Technology-value Business Creation (TBC), an initiative to monetize the company’s extensive intangible assets, including patents, know-how, data, and algorithms, by providing them in various forms, including licensing.
This approach enables speed and asset-light commercialization, accelerating new business creation and maximizing value for customers and partners. Through such licensing-based business development, Asahi Kasei aims to conclude at least 10 new license agreements during fiscal 2025–2027, with a cumulative profit contribution of
About EAS Batteries
Large-format cylindrical cells, LFP as a safe cell chemistry, energy-saving extrusion and an efficient contacting method are among the powerful ideas of a quarter of a century of EAS history. As a highly specialised niche supplier, EAS has been developing innovative cell and battery solutions at its
About Asahi Kasei
Asahi Kasei is a diversified global company that contributes to life and living for people around the world. Since its foundation in 1922, with businesses in ammonia and cellulose fiber, Asahi Kasei has consistently grown through proactive portfolio transformation to meet the evolving needs of every age. With 50,000 employees worldwide, the company contributes to sustainability by providing solutions to the world’s challenges across its three business sectors: Healthcare, Homes, and Material. For more information, visit https://www.asahi-kasei.com/.
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Asahi Kasei America Inc.
Christian OKeefe
christian.okeefe@ak-america.com
Asahi Kasei Europe GmbH
Sebastian Schmidt
sebastian.schmidt@asahi-kasei.eu
EAS Batteries GmbH
Anne Fiebig
anne.fiebig@eas-batteries.com
Source: Asahi Kasei