IMDG CODE 2024 & EV MARITIME TRANSPORT UPDATE
The IMDG Code 2024, also known as Amendment 42-24, introduces important changes for the maritime transport of new energy vehicles. From January 1, 2026, the 2024 edition will become mandatory, and many battery-powered vehicles that were previously handled under UN 3171 will need to be classified under dedicated UN numbers, including UN 3556, UN 3557, and UN 3558.
This article focuses on UN number changes, Class 9A labeling, special provisions, and practical actions for EV exporters and maritime logistics teams. For service support on lithium battery classification, packaging, labels, shipping documents, and exemption strategy, please refer to REACH24H's Lithium Battery Transportation Compliance and Transport of Dangerous Goods services.
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Search Intent: This Page Explains IMDG Code 2024 Changes for EV Maritime Transport
This article should target readers searching for IMDG Code 2024, IMDG Code Amendment 42-24, UN 3556, UN 3557, UN 3558, EV maritime transport, and Class 9A battery label. It should support, rather than replace, REACH24H's dedicated service pages for Lithium Battery Transportation Compliance and Transport of Dangerous Goods.
| Page Type | Primary Search Intent | Recommended Conversion Path |
|---|---|---|
| This article | Understand the IMDG Code 2024 changes for battery-powered vehicles, including new UN numbers, labels, special provisions, and transition timing. | Guide readers to classification review, label and document check, lithium battery transport compliance, or dangerous goods shipping support. |
| Service pages | Find consulting support for lithium battery transport, dangerous goods classification, packaging, labels, SDS, dangerous goods declarations, exemption evaluation, and logistics training. | Use the service pages as the main conversion destination for companies needing direct consulting support. |
Key Update: IMDG Code 2024 Becomes Mandatory from January 1, 2026
The IMDG Code 2024 introduces a more refined approach to battery-powered vehicles transported by sea. During the transition period, companies may start using the new edition voluntarily. From January 1, 2026, the 2024 edition will become mandatory, meaning shipping declarations, dangerous goods labels, transport documents, booking information, and internal logistics procedures should be updated in advance.
The most important change for EV exporters and shipping teams is that many lithium-ion, lithium-metal, and sodium-ion battery-powered vehicles will no longer be handled under the broad UN 3171 approach. Instead, dedicated UN numbers should be used to better reflect battery type and emergency response considerations.
Practical reminder: Companies should not wait until the mandatory implementation date. Exporters, freight forwarders, carriers, warehouse teams, customs brokers, and dangerous goods document preparers should update UN number selection, labels, marks, SDS references, dangerous goods declarations, and logistics SOPs before regular shipments are affected.
Dedicated UN Numbers for Battery-Powered Vehicles
Under the updated classification framework, the scope of UN 3171 is narrowed, while dedicated UN entries are introduced for mainstream new energy vehicles. This improves identification of battery-related transport risks throughout the maritime supply chain.
| UN Number | Applicable Vehicle / Equipment Type | Practical Compliance Action |
|---|---|---|
| UN 3171 | Narrowed scope for battery-powered vehicles and equipment not covered by the new dedicated lithium or sodium-ion vehicle entries. | Do not automatically use UN 3171 for new energy vehicles. Recheck battery type and applicable special provisions. |
| UN 3556 | Vehicle, lithium-ion battery powered. | Update booking, dangerous goods declaration, SDS references, labels, marks, and logistics instructions for lithium-ion EV shipments. |
| UN 3557 | Vehicle, lithium-metal battery powered. | Confirm battery chemistry, transport classification, packaging or enclosure requirements, and documentation before shipment. |
| UN 3558 | Vehicle, sodium-ion battery powered. | Assess whether sodium-ion vehicle shipments meet standard dangerous goods requirements or whether an exemption scenario may apply. |
Class 9A Label and Special Provisions: Key Changes to Track
Beyond UN number changes, IMDG Code 2024 also affects labels, markings, and special provisions. Companies should update transport labels and shipping documents in parallel, especially where vehicles are shipped in enclosed outer packaging or where sodium-ion battery vehicles may qualify for specific exemptions.
| Requirement / Provision | Main Change | Recommended Action |
|---|---|---|
| Class 9A battery label | Vehicles under UN 3556, UN 3557, and UN 3558 should use the Class 9A label to reflect battery-related risks. | Update label inventory, packaging SOPs, container loading instructions, shipping documents, and warehouse training materials. |
| SP388 | Clarifies that lithium and sodium-ion battery vehicles should not remain under the former broad UN 3171 approach where the new dedicated entries apply. | Review all existing shipping templates that still use UN 3171 for EVs and correct them before mandatory implementation. |
| SP961 | Provides a potential exemption scenario for certain sodium-ion battery vehicles where the battery is in a non-energized, short-circuited state and the condition is easily identifiable. | Evaluate whether sodium-ion vehicle shipments can technically meet the exemption conditions and prepare proof for carrier review. |
| SP962 | Requires appropriate markings and labels on outer packaging where vehicles are fully enclosed and cannot be directly identified. | Check crates, enclosures, containerized packaging, and external marks before booking and port entry. |
What the Update Means for Exporters and Maritime Supply Chains
The IMDG Code 2024 update affects more than the dangerous goods declaration form. It can affect product classification, booking, SDS content, label design, packaging review, warehouse handling, shipping instructions, port documentation, and customer communication.
| Affected Team | Potential Impact | Recommended Action |
|---|---|---|
| EV manufacturers and exporters | Battery type and transport status may change UN number, label, and document requirements. | Create a model-by-model classification list for lithium-ion, lithium-metal, sodium-ion, lead-acid, and other battery types. |
| Logistics and booking teams | Incorrect UN number selection may lead to booking delays, document rejection, or port handling issues. | Update booking templates, dangerous goods declarations, checklists, and carrier communication language. |
| Packaging and warehouse teams | Fully enclosed packaging may require outer labels and markings under SP962. | Review crates, outer packaging, labels, marks, container loading SOPs, and photo evidence before shipment. |
| Regulatory and EHS teams | SDSs, internal classification records, labels, and transport documentation may need synchronized updates. | Align IMDG classification with GHS/SDS/MSDS/label compliance and dangerous goods transport documents. |
Practical Checklist Before IMDG Code 2024 Becomes Mandatory
Companies exporting EVs or battery-powered equipment by sea should use the transition period to complete a systematic compliance review. The following checklist can help regulatory, EHS, logistics, packaging, warehouse, and customs teams coordinate implementation.
Audit product lines: identify vehicle models, battery type, battery chemistry, transport condition, packaging format, and destination routes.
Reassign UN numbers: determine whether UN 3171, UN 3556, UN 3557, or UN 3558 applies to each product model.
Review Class 9A labeling: ensure battery-powered vehicles under the new UN entries use the correct Class 9A label where required.
Check enclosed packaging: confirm whether SP962 applies to vehicles packed in crates, enclosures, or other outer packaging that prevents direct identification.
Evaluate sodium-ion exemption scenarios: assess whether SP961 can apply to sodium-ion battery vehicles transported in a non-energized and clearly identifiable short-circuited state.
Update documents: revise SDSs, dangerous goods declarations, packing lists, booking information, shipping instructions, SOPs, and customer-facing transport compliance statements.
Train operational teams: provide targeted training for logistics, customs, warehouse, packaging, shipping, and sales teams to avoid habitual use of outdated UN 3171 templates.
Confirm carrier acceptance: communicate with shipping lines, freight forwarders, and ports early because some operators may apply the 2024 edition before the mandatory date.
How REACH24H Can Support IMDG Code 2024 Transition
REACH24H supports EV manufacturers, battery manufacturers, vehicle exporters, logistics providers, freight forwarders, packaging teams, and multinational EHS teams in reviewing transport classification and dangerous goods documentation under IMDG Code 2024. Our support connects the IMDG update with practical lithium battery transportation compliance and dangerous goods transport implementation.
IMDG classification review: determine whether UN 3171, UN 3556, UN 3557, or UN 3558 applies to each vehicle or equipment type.
Lithium battery transport compliance: review battery type, energy capacity, UN 38.3 status, packaging, label, and transport mode requirements.
Sodium-ion battery vehicle assessment: evaluate whether SP961 exemption conditions may apply and what evidence should be prepared.
Labeling and marking review: check Class 9A labels, outer packaging marks, container marks, and enclosed packaging requirements under SP962.
Transport documentation: support preparation and review of dangerous goods declarations, shipping instructions, packing documents, SDSs, and transport compliance statements.
Exemption strategy: assess whether exempted transport or special provision-based routes are feasible without increasing compliance risk.
Operational training: provide targeted training for logistics, customs, warehouse, packaging, EHS, and sales teams.
Global alignment: coordinate IMDG Code requirements with air, road, and rail dangerous goods rules, SDS and label compliance, and broader global regulatory compliance.
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