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EU updates EV Battery Passport guidance ahead of February 2027 deadline

The European Commission has published updated guidance for the Digital Battery Passport ahead of the requirement becoming mandatory for EV batteries from 18 February 2027.

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EU Battery passport

The guidance brings together 71 data points and shows whether each is mandatory, optional, conditional or not required for each battery category.

The requirement applies to EV batteries, light-means-of-transport batteries and industrial batteries above 2 kWh that are placed on the EU market or put into service.

The guidance does not create new legal requirements

The Commission says the document is intended to help manufacturers, importers and other economic operators prepare their data systems and reporting processes.

It does not create additional legal requirements and should not be treated as an authoritative legal interpretation of the Batteries Regulation.

The passport adds a new battery data layer

Depending on the battery category, passport information can include battery identification, technical characteristics, performance and durability data, manufacturer information and details supporting repair, reuse and recycling.

For EV charging and energy businesses, the relevance is mainly downstream. Battery capacity, durability and lifecycle information could become useful when assessing vehicle charging behaviour, residual value, second-life battery use and bidirectional-energy applications.

Access rights are still being finalised

The practical question is not simply what information exists, but who is allowed to read it.

The Commission expects a separate implementing act on battery passport access rights in the fourth quarter of 2026. Until that is finalised, it is too early to assume that charging platforms, fleet software or V2G operators will automatically have access to all battery data contained in the passport.

Battery Passport data is not the same as live vehicle data

The passport should also not be confused with the live information exchanged between a vehicle, charger and battery-management system during charging.

A Battery Passport is primarily a regulated product-information and traceability system. ISO 15118 and vehicle-side systems deal with live charging communication and operational data.

There may eventually be useful overlap between the two, but one does not replace the other.

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