From licensing agreement to production in four months
New UHP601300 LFP cell delivers 2,550 W/kg continuous power—60% higher than conventional electrolyte cells—with enhanced performance at extreme temperatures. Partnership between EAS Batteries and Asahi Kasei accelerated from November 2025 licensing agreement to March 2026 production, demonstrating rapid technology commercialization.
- UHP601300 LFP 22 cell delivers 2,550 W/kg continuous power—60% higher than conventional electrolyte cells
- Licensing agreement signed November 2025; production began March 2026
- Cell achieves 2,400 cycles at 5C charge/discharge rate before capacity drops to 80%
- 46xxx format prototypes in development for low-voltage EV battery systems, targeting 2026 launch
- Asahi Kasei targeting at least 10 new licensing agreements by 2027, aiming for 10 billion yen cumulative profit contribution by 2030
German battery manufacturer EAS Batteries commercialized ultra-high-performance lithium-ion cells using Asahi Kasei's Acetolito™ electrolyte, achieving 60% higher power density and 2,400-cycle lifespan.
In the spring of 2026, a German battery maker named EAS Batteries began selling a new kind of lithium-ion cell that performs in ways its predecessors could not. The cell is built around an electrolyte developed by Asahi Kasei, a Japanese chemical company, and the partnership between the two firms happened with remarkable speed—from licensing agreement in November 2025 to production in March 2026, a span of just four months.
The cell itself is called the UHP601300 LFP 22, and its specifications tell a story of incremental but meaningful progress in battery technology. It holds 22 amp-hours of charge and delivers 2,550 watts per kilogram during continuous discharge—a 60 percent improvement over comparable cells using conventional electrolytes. When the discharge is pulsed over two seconds, the power density climbs to 3,760 watts per kilogram, an additional 10 percent gain. These numbers matter because they translate to faster acceleration, quicker response, and better performance in demanding conditions, especially when temperatures swing to extremes.
The secret lies in the electrolyte itself. Asahi Kasei's Acetolito™ is an acetonitrile-based formulation with unusually high ionic conductivity. This means ions move through the electrolyte more freely, reducing the internal resistance of the cell. The result is a battery that works harder at high charge and discharge rates and maintains its composure in heat and cold—problems that have plagued lithium-ion batteries for years. The cell can cycle 2,400 times at a 5C charge and discharge rate with 100 percent depth of discharge before its capacity falls to 80 percent of its original level, a respectable lifespan for demanding applications.
Michael Deutmeyer, the chief executive of EAS Batteries, framed the achievement as validation of the partnership's efficiency. The company, based in Nordhausen, Germany, has spent more than three decades building specialized cells for aerospace, automotive, and marine industries—niches where reliability and performance matter more than cost. Asahi Kasei's Osamu Matsuzaki, the senior executive leading research and development, emphasized the speed of the transition from laboratory to factory floor, calling it evidence of what focused collaboration could accomplish.
But the real momentum lies ahead. EAS Batteries and Asahi Kasei are already developing a second cell format, known as 46xxx, designed specifically for low-voltage battery systems in electric vehicles. Prototypes are in customer hands now, and the companies expect to launch a commercial product in 2026. This format represents a different market segment—not the high-performance niche where EAS has traditionally operated, but the broader EV ecosystem where cost and integration matter as much as raw power.
Asahi Kasei's broader strategy is to monetize its intellectual property through licensing rather than manufacturing alone. The company announced in April 2025 that it would pursue at least ten new licensing agreements between 2025 and 2027, targeting cumulative profit contributions exceeding 10 billion yen by 2030. The EAS Batteries deal is one piece of this larger pivot—a way to turn decades of research into revenue streams without building factories or managing supply chains. The Acetolito™ electrolyte is being offered to other battery makers and OEM manufacturers worldwide, with the promise that it can shrink battery systems, reduce costs, and unlock performance gains across multiple applications.
For EAS Batteries, the partnership opens a door to markets it could not reach alone. The company's strength has always been in custom, high-performance cells for specialized industries. By pairing that expertise with Asahi Kasei's chemistry, it can now offer something the market has been waiting for: a cell that performs at the edge of what lithium-ion can do, in formats that matter to the automotive industry. The 46xxx development suggests that this is not a one-off collaboration but the beginning of a sustained effort to reshape what battery cells can do.
Citações Notáveis
The successful launch of our new ultra-high-performance cell with Asahi Kasei is another important step in our strategic partnership, and we are making significant progress on the new 46xxx cell format.— Michael Deutmeyer, CEO of EAS Batteries
The short period between signing our licensing agreement in November 2025 and starting series production in March 2026 illustrates the focused and close cooperation between EAS Batteries and Asahi Kasei.— Osamu Matsuzaki, Senior Executive Director of Asahi Kasei
A Conversa do Hearth Outra perspectiva sobre a história
Why does a four-month timeline from licensing to production matter so much? That seems like it should be normal.
In battery development, it's not. Usually, you sign a licensing deal, spend a year or more on engineering and validation, then another year ramping production. EAS and Asahi Kasei did it in four months. That speed signals something about how well the two companies understood each other's capabilities and how mature the electrolyte technology already was.
The 60 percent power improvement—is that a real leap forward, or is it the kind of number that sounds impressive but doesn't change much in practice?
It's real. In electric vehicles, especially in cold weather or during hard acceleration, that kind of power density difference means the difference between acceptable performance and genuinely responsive handling. For aerospace and marine applications, where EAS has always focused, it's the difference between meeting specifications and exceeding them.
Why is Asahi Kasei suddenly so focused on licensing instead of making batteries themselves?
They're not abandoning manufacturing. But they realized they have decades of chemistry research that could be worth more as intellectual property than as finished products. Licensing lets them reach markets and applications they'd never build factories for, and it's faster capital-light revenue. The 10 billion yen target by 2030 is their way of saying: we're betting this model works.
The 46xxx format for low-voltage EV systems—is that a different market from where EAS usually plays?
Completely different. EAS has always been a specialist's specialist—aerospace, marine, high-end automotive. The 46xxx is aimed at the mass-market EV battery space. It suggests both companies see an opportunity to scale beyond niches.
What happens if the 46xxx doesn't work as well as the UHP601300?
Then they've learned something valuable about whether Asahi Kasei's electrolyte works across different cell geometries and use cases. But the fact that prototypes are already in customer hands suggests they're confident enough to test it in the real world.