Overview
IEC TR 62933-2-201:2024 is a technical report by IEC that reviews unit parameters and testing methods for Battery Energy Storage Systems (BESS) specifically focused on the implementation of repurpose and reuse batteries (second‑life batteries). The report summarizes market drivers, regulatory trends, regional case studies (China, EU/UK, Japan, Korea, North America, Australia), and practical issues affecting design, manufacturing, testing, operation and maintenance of BESS using repurposed batteries.
Keywords: IEC TR 62933-2-201:2024, BESS, repurpose batteries, reuse batteries, testing methods, battery energy storage systems, battery testing, second‑life batteries.
Key Topics
- Scope and background: BESS market trends, supply challenges and motivations for using reused batteries.
- Regulatory landscape: Overview of legislation and policies affecting repurpose/reuse batteries (e.g., European Battery Directive, national/local policies in China, Japan, Korea).
- Case studies: Multiple real‑world BESS installations and business models across regions that demonstrate technical and regulatory approaches.
- Testing methods and unit parameters: Review of existing testing approaches, gaps when applying tests to second‑life batteries, and recommendations for comprehensive testing with intensive monitoring.
- Performance uncertainty and prediction: Discussion on variability in residual capacity, performance distribution, and challenges in forecasting remaining useful life of reused cells/pack.
- System design and monitoring: Architectural considerations, the role of battery management systems (BMS), and methodologies for ongoing intensive monitoring to manage heterogeneity among reused batteries.
- Operational and maintenance issues: Implications for warranty, safety, asset management and grid integration when deploying repurposed batteries.
Applications
- Integrating retired EV batteries into stationary BESS (grid‑connected or off‑grid)
- Developing test and certification programs for second‑life batteries
- Designing BESS architectures that accommodate heterogeneous battery performance
- Informing public policy, standards, and industrial strategies for battery circularity
- Implementing Business‑as‑a‑Service (BaaS) or commercial repurposing models
Who Uses This Standard
- BESS manufacturers and system integrators
- EV OEMs and battery remanufacturers/repurposers
- Testing and certification laboratories
- Utilities, large energy users and microgrid operators
- Regulators, policy makers and standards developers
- Researchers and consultants in energy storage and circular economy
Related Standards
- IEC 62933 series (electrical energy storage systems)
- IEC 63330‑1 (referenced in discussion of categorizing used batteries)
- Regional battery regulations and directives (e.g., European Battery Directive, industry association guidance such as EUROBAT)
IEC TR 62933‑2‑201:2024 is a practical resource for bridging standardized testing and system design with the realities of deploying repurposed batteries at scale.