Battery Passport vs CE Marking: What's Required?

One of the most common questions from manufacturers entering the EU market: battery passport vs CE marking — are they the same thing? Do you need both? The short answer: yes, you need both. They serve different compliance functions under separate (but overlapping) regulatory frameworks.

What CE Marking Means for Batteries

The CE mark indicates that a product conforms with applicable EU health, safety, and environmental protection requirements. For batteries, CE marking under battery regulation EU rules confirms the product meets:

• Safety and performance requirements in Regulation (EU) 2023/1542
• Restricted substance limits
• Labeling requirements (capacity, separate collection symbol, etc.)
• Conformity assessment procedures and declaration of conformity

CE marking is a physical label affixed to the product. It is the manufacturer's declaration that all applicable directives and regulations have been satisfied at the time of market placement.

What the Battery Passport Adds

The digital battery passport is a separate, additional obligation. It provides:

• Structured, machine-readable lifecycle data accessible via QR code
• Carbon footprint and recycled content transparency
• Supply chain due diligence evidence
• Dynamic State of Health updates over the battery's service life

CE marking tells regulators the product is safe to sell. The passport tells the entire value chain what the battery is made of, how it performed, and where it came from.

Side-by-Side Comparison

Attribute	CE Marking	Digital Battery Passport
Format	Physical mark on product	Digital record + QR code
Legal basis	Multiple EU directives/regulations	Regulation (EU) 2023/1542, Annex XIII
Data depth	Declaration of conformity summary	50+ structured data fields
Lifecycle	Static at market entry	Updated over battery lifetime
Enforcement start	Already required	18 Feb 2027 (EV/industrial)
Who checks it	Market surveillance authorities	Authorities, recyclers, consumers, fleet operators

Do They Reference Each Other?

Yes. The passport includes CE marking and declaration of conformity references as Annex XIII fields. Auditors cross-check that the physical CE mark, the written declaration, and the digital passport all describe the same product variant.

Common Compliance Gaps

CE marked but no passport program

Many manufacturers already CE-mark battery products but have no passport infrastructure. After February 2027, CE marking alone is insufficient for EV and industrial batteries above 2 kWh.

Passport created but CE documentation missing

Digital passport platforms don't replace conformity assessment. You still need test reports, technical files, and a signed declaration of conformity.

Mismatched product identifiers

The UID in the passport must correspond to the exact product variant covered by the CE declaration. Mixed SKUs on a single passport record is an audit failure.