An intermediate battery assembly whose legal meaning differs between EU battery law and U.S. manufacturing-credit rules.
Battery module now sits across two source families in the glossary. The EU Battery Regulation uses it as part of a battery-product structure hierarchy, while U.S. 45X uses it for tax-credit treatment and adds explicit cell-count and capacity logic.
Regulation (EU) 2023/1542 concerning batteries and waste batteries
any set of battery cells that are connected together or encapsulated within an outer casing to protect the cells against external impact, and which is meant to be used either alone or in combination with other modules;
Reference: Article 3, point 3
26 U.S.C. § 45X - Advanced manufacturing production credit
a module— (I) (aa) in the case of a module using battery cells, with 2 or more battery cells which are configured electrically, in series or parallel, to create voltage or current, as appropriate, to a specified end use, or (bb) with no battery cells, and (II) with an aggregate capacity of not less than 7 kilowatt-hours (or, in the case of a module for a hydrogen fuel cell vehicle, not less than 1 kilowatt-hour).
45X uses a manufacturing-credit-focused definition with explicit module structure and aggregate-capacity thresholds.
Reference: 26 U.S.C. § 45X(c)(5)(B)(iii)
Battery module is a source-specific regulatory and statutory term for an intermediate battery assembly, but the exact legal meaning differs by source. The EU Battery Regulation focuses on connected or encapsulated battery cells used alone or with other modules, while 26 U.S.C. § 45X adds explicit structure and aggregate-capacity thresholds for manufacturing-credit purposes.
This term is defined in U.S. law (26 U.S.C. § 30D or § 45X) and is not part of EU regulatory vocabulary. It is included in this glossary because battery manufacturers and EV producers operating in both the EU and US markets need to navigate both legal frameworks simultaneously. Definitions in US and EU law for similar concepts (e.g. battery cell, battery module) are not identical and should not be treated as interchangeable.
This term matters when battery structures are being mapped for traceability, product passports, and manufacturing-incentive analysis. The exact threshold-based 45X meaning can matter when teams translate engineering structures into U.S. incentive or supply-chain claims.
For Minespider, battery module is useful because it links engineering structure to compliance and incentive language. The key caution is that a module definition used for product architecture in one source is not automatically identical to the manufacturing-credit definition in another.