Lithium Battery Certifications Explained: UN38.3, IEC62133, UL, CE and More
Which certificates does your battery actually need to ship and sell? A plain-English map of transport, product-safety and regional certifications — and how to plan them.
Two kinds of certification
Which certifications do I need?
Transport: UN38.3 (non-negotiable)
The UN38.3 test series includes T.1 Altitude Simulation, T.2 Thermal Test, T.3 Vibration, T.4 Shock, T.5 External Short Circuit, T.6 Impact / Crush, T.7 Overcharge and T.8 Forced Discharge. The applicability of individual tests depends on whether the item is a cell or battery and the relevant test conditions.
Product safety: by application
| Standard | Scope |
|---|---|
| IEC 62133-2 | Portable sealed secondary lithium cells and batteries |
| UL 2054 / UL 1642 | Battery packs / lithium cells for applicable North American product categories |
| IEC 62619:2022 | Secondary lithium cells and batteries for industrial applications, including stationary applications |
| IEC 60601-1 | Medical electrical equipment safety; applies at the equipment/system level rather than being a standalone battery certification |
| UL 1973 | Batteries for stationary and motive auxiliary power applications |
| UL 9540 | Energy storage systems and equipment |
| UL 9540A | Test method for evaluating thermal runaway fire propagation in battery energy storage systems |
Regional market access
| Market | Mark / scheme |
|---|---|
| European Union | CE marking — subject to applicable EU legislation, including requirements under the EU Battery Regulation where applicable |
| United Kingdom | UKCA |
| South Korea | KC |
| Japan | PSE |
| India | BIS |
| Global scheme | CB (IECEE) |
How to verify a supplier's certificates
- Ask for the actual test report or certificate documentation, not just a certification logo.
- Check whether the documentation covers your exact cell or battery model, not a similar one.
- Check report or certificate numbers where applicable, including scope and validity/status when shown.
- Confirm the issuing or testing organization where relevant.
- For stationary energy storage, confirm which system-level standards or tests apply to the specific product and target market.
Battery solution
Certification-ready battery manufacturing
Plan UN38.3, applicable product-safety requirements, SDS/MSDS and market-entry documentation before mass production.
Frequently asked questions
Is UN38.3 mandatory?+
UN38.3 is part of the lithium battery transport testing framework. Lithium cells and batteries offered for transport generally must meet the applicable UN38.3 requirements, subject to the relevant transport regulations and any applicable exceptions.
What's the difference between UN38.3 and IEC 62133-2?+
UN38.3 addresses transport testing requirements for lithium cells and batteries. IEC 62133-2 is a product-safety standard mainly for portable sealed secondary lithium cells and batteries. They are separate compliance workstreams.
Do home energy-storage batteries need special certification?+
Requirements depend on the target market, system configuration, installation and applicable local regulations or standards. Stationary energy-storage projects may involve IEC 62619:2022, UL 1973, UL 9540, UL 9540A or other requirements at different cell, battery or system levels.
How do I confirm a battery is really certified?+
Ask for the report or certificate number, exact model coverage, issuing/testing organization, scope and validity/status where applicable. Reputable manufacturers provide documentation that can be matched to the specific cell or battery model.
