German battery manufacturer EAS Batteries has commenced sales of its ultra-high-power lithium-ion LFP cell, the UHP601300-LFP-22, which incorporates Asahi Kasei’s Acetolyte™ electrolyte. This acetonitrile-containing formulation provides high ionic conductivity, reducing internal resistance and improving rate capability across demanding temperature conditions.
The cell, with a nominal capacity of 22 Ah, delivers 2,550 W/kg under continuous discharge (880 A at 40 °C) and 3,760 W/kg during a 2-second pulse (1,320 A at 60 °C). These figures represent a 60% increase in continuous power and a 10% increase in pulse power compared to similar cells using conventional electrolytes. At room temperature, it achieves a cycle life of 2,400 cycles at 5C/5C with 100% depth of discharge, retaining 80% of its initial capacity. Samples are now being evaluated by customers in various industries.
EAS Batteries and Asahi Kasei entered a licensing agreement in November 2025, enabling the use of Acetolyte™ in EAS’s cylindrical LFP cells. Under this partnership, the companies plan to sublicense their combined technologies to global OEMs and battery producers, targeting mobility applications. They are also developing a 46xxx cell format, with prototypes available for testing and a market launch scheduled for later in 2026.
Michael Deutmeyer, Managing Director of EAS Batteries, noted that the quick commercialization of the cell and the ongoing 46xxx format development demonstrate the strength of the companies’ collaborative approach. Osamu Matsuzaki, Head of Corporate R&D and IP at Asahi Kasei, highlighted that the rapid transition from licensing to production underscores the effectiveness of their joint development efforts.
Acetolyte™’s high conductivity enables enhanced power output at low temperatures, improved durability at high temperatures, reduced cost, and smaller battery pack designs, contributing to higher energy density.
Source: Asahi Kasei Corp.
