Anyone who purchases and resells secondhand e-bike batteries, scooter batteries or industrial battery packs will sooner or later face the question of whether the digital battery passport also applies to them. The short answer: the Regulation does not look at the age of a battery, but at the question of whether someone places that battery on the EU market (again) or puts it into use, and in what capacity that happens. Whether a battery is new or used is not the criterion; who performs the action and what has been done to the battery, are.
This makes the distinction trickier than it seems. A private individual who sells his old e-bike with battery to a neighbor does something different from a business that purchases used batteries, tests them, provides them with new cells and resells them as a refurbished product. Between these two extremes lies a grey area in which the nature of your activity determines whether you yourself act as a market participant.
Why 'placing on the market' is the core here
The Regulation links many obligations to the moment when a battery is first, or again, made available on the EU market. If you want to understand how that term is precisely constructed and what scope it leaves for borderline cases, that is set out separately: the explanation of placing on the market in the knowledge base. For secondhand batteries, it is relevant whether a valid passport and associated documentation already existed, and whether your action changes that situation.
Three common situations
In simple resale, where a battery passes unchanged from one owner to another, nothing fundamentally changes about the product. In the case of repair or replacement of individual parts, such as a housing or a module, it remains unclear whether the battery is regarded as the 'same' battery or as a newly assembled product. In the case of remanufacturing, where cells are replaced or batteries are configured for a new application, such as an EV battery receiving a second life as stationary storage, a fresh assessment is most appropriate. In none of these situations does this article determine what applies to your business; the Regulation distinguishes between these cases, but the precise classification of a specific action requires assessment on a case-by-case basis.
Private sale versus business activity
A second line running through the Regulation is the distinction between private dealings and business activity. Sales between consumers, without a business intermediary, generally fall outside the scope that the Regulation has in mind. As soon as a business purchases batteries with the intention of reselling them, a role in the chain emerges, and that role brings its own questions about documentation, traceability and, where applicable, the passport. For businesses unsure whether their activity crosses that line, it is useful to systematically review their own situation rather than relying on gut feeling; get a preliminary indication in a few questions helps to see where attention should be directed.
What this means for your administration
What is often overlooked in practice is that a battery that already had a passport does not automatically lose that passport upon resale. The passport is linked to the battery, not to the first owner. This means that when you purchase secondhand batteries, you will want to know whether a passport already exists and whether the information in it is still correct, especially if you have made changes to the battery before offering it again. batpas.eu stores and provides that information for ten years; how that information is precisely compiled and where it comes from is explained on the page on how the data is compiled.
The boundary is not always clear
It is tempting to look for one simple rule that covers all second-hand situations, but that rule does not exist. The Regulation works with concepts such as market participant, manufacturer and the moment of placing on the market, and these concepts must be applied each time to the concrete action you carry out. For a definitive statement about your own business, that is bespoke work, for which a lawyer or the competent supervisory authority is the appropriate avenue. What an article like this can do, however, is help you ask the right question before you put it to an expert.
If you want to see how your own assortment, including any second-hand or refurbished batteries, relates to the obligations under the Regulation, the free quick-scan is a logical starting point. Feel free to also go through the other topics the frequently asked questions about the battery passport through; many of the doubts that arise in second-hand trade come back in a different form there.