Lithium-Ion packaging

Which UN3481 rules apply to lithium metal batteries?

Summary

8 minutes reading time

Michel Prins

Accountmanager Safety & Security

Michel Prins is Account Manager at Faes and a specialist in Safety & Security. Thanks to his background at the Ministry of Defense and years of experience in the sector, he advises organizations on reliable packaging solutions for critical applications. He combines practical knowledge with technical expertise to package sensitive equipment safely and efficiently.

What are the UN3481 classification criteria for lithium metal batteries?

UN3481 is the specific classification code for lithium metal batteries that are packaged with equipment or built into equipment. This classification falls under the international regulations for dangerous goods and applies to batteries that use metallic lithium or lithium alloys as the anode. The main classification criteria for UN3481 lithium metal batteries are:

The lithium content in the battery (for lithium metal cells this must not exceed 1 gram, for batteries not more than 2 grams)
The configuration of the battery in relation to the equipment (packaged with or built into)
The condition of the battery (new, used or damaged)

It is essential to distinguish between lithium metal batteries (UN3481/UN3090) and lithium-ion batteries (UN3480/UN3091). Lithium metal batteries are generally non-rechargeable and contain metallic lithium, whilst lithium-ion batteries are rechargeable and contain lithium ions that move between electrodes. This difference determines which specific UN code the batteries fall under. The classification also depends on how the batteries are transported. If the lithium metal batteries are shipped loose (not with equipment), they fall under UN3090. Only when they are shipped with equipment or are built into it does the UN3481 classification apply.

What packaging requirements apply to UN3481 lithium metal batteries?

Specific packaging regulations apply to UN3481 lithium metal batteries to ensure they can be transported safely. These regulations are set out in packaging instructions which may vary depending on the mode of transport. The key packaging requirements are:

Batteries must be protected against short-circuiting
Equipment with built-in batteries must be secured against accidental activation
Batteries must be packed in sturdy, shock-resistant material
Sufficient cushioning material must be present to prevent movement within the packaging
The packaging must pass a 1.2-metre drop test without damage to the contents

The following is required for the marking and labelling of UN3481 shipments:

The UN3481 lithium battery label (with aircraft symbol)
Proper shipping name: “Lithium metal batteries packed with equipment” or “Lithium metal batteries in equipment”
UN number: UN3481
Name and address of the sender and recipient
Telephone number for further information

In addition, documentation is required, including a sender’s declaration that the consignment complies with all applicable regulations. For air transport, a specific “Shipper’s Declaration for Dangerous Goods” is required, unless the consignment falls under certain exemptions. Packaging requirements may vary depending on the size and type of battery. It is therefore important to consult the most recent packaging instructions specific to your type of lithium metal batteries.

How does the transport of UN3481 batteries differ by mode of transport?

The regulations for the transport of UN3481 lithium metal batteries differ by mode of transport. Each mode of transport has its own specific regulations that must be strictly adhered to. Road transport (ADR):

Complies with ADR regulations (European Agreement concerning the International Carriage of Dangerous Goods by Road)
Requires correct documentation, marking and labelling
Drivers must often be ADR-certified, depending on the quantity
Special provisions such as SP188 may apply to smaller batteries

Sea transport (IMDG):

Follows the IMDG Code (International Maritime Dangerous Goods Code)
Requires watertight packaging resistant to seawater and vibration
Specific stowage instructions on board ships
Additional documentation for international sea shipments

Air transport (IATA/ICAO):

Has the strictest regulations of all transport modes
Complies with the IATA Dangerous Goods Regulations and ICAO Technical Instructions
Requires specific training for personnel involved in preparing the shipment
Has restrictions on transport in passenger aircraft versus cargo aircraft
Often requires pre-approval from the airline

Rail transport (RID):

Follows the RID regulations (Regulations concerning the International Carriage of Dangerous Goods by Rail)
Similar to ADR regulations, but with specific adaptations for rail transport
Special stowage requirements in railway wagons

Aviation regulations are generally the most restrictive, with specific limitations on lithium metal batteries in passenger aircraft. For all modes of transport, personnel involved in the carriage of dangerous goods, including UN3481 batteries, must be adequately trained in accordance with the relevant regulations.

What are the exceptions to the UN3481 regulations?

There are various exceptions and exemptions that can simplify the transport of UN3481 lithium metal batteries. These exceptions are intended to facilitate logistics processes for batteries that pose a lower risk. The main exceptions are: Small quantities exception: Batteries with a lithium content below certain thresholds (usually 1 gram for cells and 2 grams for batteries) may be shipped under simplified conditions Equipment exception: Batteries built into equipment (UN3481) often have less stringent packaging requirements than loose batteries Limited Quantities: Simplified regulations apply to certain combinations of equipment and batteries Exemptions for consumers: Private individuals transporting batteries for personal use are often exempt from certain regulations Prototypes and small production runs: Special provisions apply to prototype batteries and small production runs under certain conditions The exact conditions for these exemptions may vary by mode of transport and region. For example, for air transport, the Section II exemption in the IATA DGR applies, which allows for simplified documentation for smaller lithium metal batteries. It is important to understand that even when using exemptions, certain basic requirements must still be met, such as:

Protection against short circuits
Sturdy outer packaging
Correct marking and labelling
Basic staff training

Before making use of an exemption, it is advisable to check the most recent regulations, as these are regularly updated to improve safety.

Conclusion

Navigating the complex regulations surrounding UN3481 lithium metal batteries requires care and attention to detail. Correct classification, packaging and documentation are not only legally required but also essential for safety during transport and storage. By understanding the specific requirements for different modes of transport and knowing which exemptions may apply, you can ensure that your lithium metal batteries are transported safely and in compliance with the law. This prevents delays, fines and – most importantly – potential safety risks. At Faes, we understand the challenges involved in transporting sensitive and dangerous goods such as lithium batteries. As specialists in packaging solutions for the defence sector and other regulated industries, we can help you with packaging that not only complies with all relevant UN standards but also provides optimal protection for your valuable equipment.

Frequently Asked Questions

How do I prepare my staff to handle UN3481 batteries safely?

Provide specific training on the hazards of lithium metal batteries, correct handling techniques and emergency procedures in the event of incidents. Staff must be certified in accordance with the relevant regulations (ADR, IATA, IMDG) depending on the mode of transport. Regular refresher courses are essential, as regulations are frequently updated. Document all training and ensure clear work instructions are in place on the work floor.

What should I do if a UN3481 battery is damaged during transport?

Immediately isolate the damaged battery and, if possible, place it in a fire-resistant container. Prevent contact with other batteries or flammable materials. Report the incident to the responsible safety manager and follow your internal emergency procedures. Document the incident carefully and, if necessary, inform the relevant authorities. If there are signs of overheating, smoke or fire, evacuate the area and call the emergency services immediately.

What documents do I need to keep to comply with UN3481 regulations?

Retain all transport documents for at least two years, including dangerous goods declarations, packaging certificates, battery test reports, staff training certificates and any exemptions or special permits. Also keep a register of all UN3481 batteries shipped, detailing quantities, destinations and modes of transport. This documentation is crucial during inspections by the authorities and helps demonstrate compliance.

How can I ship UN3481 batteries internationally to countries with different regulations?

Always research the specific regulations of both the country of origin and the destination, as some countries have stricter requirements than international standards. Work with a freight forwarder specialising in dangerous goods and familiar with local requirements. Consider using IATA’s ‘Global Dangerous Goods Network’ for air freight or consult local customs authorities regarding specific import requirements. Allow for potentially longer processing times for approvals.