Minimum values for the electrochemical performance and durability of rechargeable industrial batteries

What the Commission proposes

This draft Commission Delegated Regulation supplements Regulation (EU) 2023/1542 by establishing minimum values for the electrochemical performance and durability of rechargeable industrial batteries with a capacity greater than 2 kWh. It sets specific thresholds for parameters such as capacity fade, expected lifetime in cycles or years, and energy round trip efficiency across different battery categories including residential storage, repetitive energy supply, and on-demand batteries. The act also outlines measurement and calculation methods, stress factor determinations, and rules for batteries that have undergone preparation for re-use, repurposing, or remanufacturing. Products designed for defence purposes are excluded from the scope of these requirements.

• Establishes minimum performance and durability values for rechargeable industrial batteries exceeding 2 kWh capacity, excluding those with exclusively external storage or for defence purposes.
• Sets specific criteria for residential battery energy storage systems, covering capacity fade limits, expected lifetime in cycles, and a minimum energy round trip efficiency greater than 93%.
• Defines requirements for repetitive energy supply batteries and lead-based variants, detailing distinct capacity fade thresholds and cycle life expectations adjusted by stress factors.
• Sets durability rules for on-demand batteries, requiring an expected lifetime in years multiplied by a stress factor to exceed 10 years.
• Specifies measurement and calculation methods for capacity fade, expected lifetime, and round trip efficiency, incorporating stress factors related to temperature, depth of discharge, and C-rates.
• Provides rules for batteries that have been subjected to preparation for re-use, repurposing, or remanufacturing, including compliance pathways based on previous use and operational data.

Summary written from 21 passages of the Commission document by gemini-3.5-flash-lite on 3 Oct 2026; cached and shared by every organisation.

Commission documents: ANNEXES to the Commission Delegated Regulation supplementing and amending... (EN, 12 pages); COMMISSION DELEGATED REGULATION (EU) …/... supplementing and amending... (EN, 6 pages).

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