An EU Battery Regulation category for a battery whose energy is stored exclusively in one or more attached external devices.
The term helps separate battery configuration from ordinary battery categories. It matters when technical files, safety information, product records, and responsibility boundaries depend on where the energy-storage function physically sits.
EU Battery Regulation Article 3 defines the term by exclusive energy storage in one or more attached external devices. The word “exclusively” controls the boundary because mixed or integrated storage configurations may not fit this category.
Regulation (EU) 2023/1542 concerning batteries and waste batteries
a battery that is specifically designed to have its energy stored exclusively in one or more attached external devices;
Reference: Article 3, point 8
Public draft page. Preserve EU Battery Regulation category, actor, and EPR-operation boundaries.
Battery Regulation obligations vary by category. A battery with external storage must still be classified into its operative Battery Regulation category to determine the real obligation set; the presence of external storage does not by itself resolve whether passport, carbon-footprint, recycled-content, or due-diligence obligations apply.
Implementation records should capture the external-storage configuration, attached-device identifier, product/system boundary, product identifier, technical-file reference, manufacturer claim, system boundary, and assessment decision used to distinguish external storage from integrated battery storage.
Battery with external storage is an external-storage architecture control: the evidence consequence is that technical documentation, product identity, and compliance responsibility need to follow the attached-device energy-storage boundary.