EAS Batteries has started sales of its UHP-601300-LFP-22 ultra-high-power lithium iron phosphate cell, which uses Asahi Kasei’s acetonitrile-based Acetolyte electrolyte. The 22Ah cell delivers 2,550W/kg continuous discharge, 60% higher than conventional cells. Both companies are now sublicensing the technology and developing a 46xxx format cell for low-voltage EV batteries, targeted for 2026.
German battery manufacturer EAS Batteries, based in Nordhausen, has started sales of an ultra-high-power lithium iron phosphate (LFP) cell built around Asahi Kasei’s acetonitrile-containing electrolyte, Acetolyte. The cell was initially launched in March 2026.
The UHP-601300-LFP-22 has a nominal capacity of 22Ah and delivers 2,550W/kg under continuous discharge, a 60% increase over EAS cells using conventional electrolytes. Under a two-second pulse discharge, specific power reaches 3,760W/kg, an improvement of roughly 10%. The cell achieves a cycle life of 2,400 cycles at 5C/5C and 100% depth of discharge (DoD) at room temperature, retaining 80% of its initial capacity.
In continuous discharge, the cell reaches 880A (40C) compared with 550A (25C) for the conventional-electrolyte equivalent. Both cell types reach 1,320A (60C) under two-second pulse discharge. According to Asahi Kasei, the electrolyte’s high ionic conductivity reduces internal resistance and improves rate capability, particularly under demanding temperature conditions. The company says the technology also lowers costs and enables smaller battery packs, increasing energy density.
The cell builds on a licensing agreement signed in November 2025, covering use of the Düsseldorf-based chemical company’s electrolyte in EAS’s cylindrical LFP cells. Samples are currently being evaluated by customers across industries.
The two companies have agreed to sublicense their combined technologies to global original equipment manufacturers (OEMs) and battery manufacturers, with the aim of expanding into mobility applications. They are also evaluating the electrolyte for 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.
“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,” says EAS managing director Michael Deutmeyer.
Osamu Matsuzaki, senior executive officer at Asahi Kasei and head of corporate research and development (R&D) and intellectual property (IP), explains the speed of the project: “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.”
He adds: “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 set out its plans for licensing-based business development in a medium-term management plan announced in April 2025. The company aims to conclude at least 10 new license agreements during fiscal 2025–2027, with a cumulative profit contribution of ¥10bn or more by around 2030.
