German battery manufacturer EAS Batteries has begun selling the UHP-601300-LFP-22, a 22 Ah large-format cylindrical LFP cell that uses Asahi Kasei’s Acetolyte electrolyte—an acetonitrile-based formulation that raises the cell’s continuous discharge power to 2,550 W/kg at 880 A (40 C), a 60% improvement over the same cell running conventional electrolyte at 1,550 W/kg and 550 A (25 C).
The improvement comes from Acetolyte’s higher ionic conductivity, which reduces internal resistance and allows higher sustained current without thermal penalties. The effect is especially pronounced under demanding temperature conditions, where conventional carbonate electrolytes lose conductivity faster. Under a 2-second pulse, specific power reaches 3,760 W/kg at 1,320 A (60 C)—about 10% higher than the conventional-electrolyte version, which hits the same current ceiling but at lower specific power.
EAS says cycle life is 2,400 cycles at 5 C charge / 5 C discharge, 100% depth of discharge at room temperature, retaining 80% of initial capacity.
The two companies have agreed to sublicense their combined technology to global OEMs and battery manufacturers for mobility applications. They’re also developing a 46xxx cylindrical cell format using Acetolyte, with prototypes available for testing—primarily aimed at low-voltage EV batteries.
Serial production started in March 2026 following a licensing agreement between Asahi Kasei and EAS signed in November 2025. Samples are currently being evaluated by customers across industries.
“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 at Asahi Kasei.
EAS Batteries is based in Nordhausen, Germany, and has been producing cylindrical cells for aerospace, automotive, and industrial applications for more than 30 years.
Source: EAS Batteries
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