What Is the Difference Between CE and UL Certification for Batteries?

CE and UL are two of the most familiar marks on imported batteries, but they answer different questions for different markets.

CE: Market Access for Europe

The CE mark indicates that a product conforms to the applicable European Union directives and harmonized standards, covering safety, EMC and, for batteries, relevant chemical and transport regulations. It is the supplier's declaration of conformity and is required to place the product on the EU market.

UL: North American Safety Standards

UL certification is a third-party safety certification based on Underwriters Laboratories' standards, widely recognized in the US and Canada. It is generally perceived as a rigorous independent safety test, especially for cells and packs used in consumer, medical or industrial equipment.

How to Treat Them

They are not alternatives: CE supports EU market access, while UL demonstrates safety for North American buyers and insurers. A product can hold both. When sourcing custom packs, ask which marks your target market actually requires.

If you sell into both markets, plan certification early because testing and factory inspection take time; a reputable supplier will share existing test reports for similar models.