Lithium Battery Shipping Requirements 2026: UN3480/UN3481, Vehicle UN 3556/UN3558 & UN38.3
2026 Changed the Rules: Battery UNs Stay, Vehicle UNs Are New
Every year, lithium battery shipments from China are delayed at Qingdao, Shanghai, and Shenzhen ports for one of four reasons: no UN38.3 test report, wrong UN number, non-certified packaging, or a document mismatch. In 2026, a fifth reason joined the list: declaring an electric vehicle under the old UN 3171 entry that no longer covers it.
Under IMDG Code Amendment 42-24, mandatory since 1 January 2026, the generic entry UN 3171 (“Battery-powered vehicle or battery-powered equipment”) is no longer available for lithium-ion, lithium-metal, or sodium-ion powered vehicles. Those vehicles must now be declared under three dedicated entries — UN 3556, UN 3557 and UN 3558 — while the standalone battery entries UN 3480 and UN 3481 remain unchanged for batteries shipped on their own or in equipment.
This guide walks through every requirement for 2026: the battery UN numbers, the new vehicle UN numbers, UN38.3 testing, certified packaging, documentation, and carrier rules, so you can book with confidence.
Why Are Lithium Batteries Regulated as Class 9 Dangerous Goods?
Lithium batteries store energy densely and contain flammable electrolytes. In a container fire, they can enter thermal runaway — generating heat faster than it can dissipate and releasing flammable gases. A single damaged cell can cascade across a whole container, which is why carriers treat battery cargo as a fire-risk commodity and why the International Maritime Organization regulates them under the IMDG Code rather than as general cargo.
Two families are regulated:
- Lithium-ion batteries (rechargeable) — used in phones, laptops, power banks, e-bikes, and energy storage systems.
- Lithium metal batteries (non-rechargeable, metallic lithium) — used in cameras, sensors, and medical devices.
Both families fall under Class 9, but they use different UN numbers, and the single most common error in China export bookings is mixing them up.
The Complete UN Number Map for 2026
Before you book, you need the right entry. This is the full map of battery and battery-vehicle UN numbers under IMDG Amendment 42-24:
| UN Number | Proper Shipping Name | What It Covers | Typical Cargo |
|---|---|---|---|
| UN3480 | Lithium-ion batteries | Standalone batteries (not installed in equipment) | Power banks, loose cells, battery packs for e-bikes |
| UN3481 | Lithium-ion batteries contained in / packed with equipment | Batteries installed in, or packed with, equipment | Phones, laptops, power tools |
| UN3090 | Lithium metal batteries | Standalone non-rechargeable batteries | Camera cells, sensor batteries |
| UN3091 | Lithium metal batteries contained in / packed with equipment | Non-rechargeable batteries in or with equipment | Medical devices, trackers |
| UN3556 | Vehicle, lithium ion battery powered | NEW in 42-24 — vehicles driven by lithium-ion batteries | EVs, e-bikes, e-scooters, AGVs, forklifts |
| UN3557 | Vehicle, lithium metal battery powered | NEW in 42-24 — vehicles driven by lithium-metal batteries | Vehicles with non-rechargeable battery packs |
| UN3558 | Vehicle, sodium ion battery powered | NEW in 42-24 — vehicles driven by sodium-ion batteries | Sodium-ion EVs, energy storage vehicles |
| UN3551 / UN3552 | Sodium-ion batteries (standalone / in equipment) | NEW in 42-24 — sodium-ion battery entries with organic electrolyte | Sodium-ion cells and equipment |
| UN3171 | Battery-powered vehicle or equipment (wet, sodium metal / sodium alloy) | Scope narrowed in 42-24 — no longer covers lithium or sodium-ion powered vehicles | Wet-battery vehicles (e.g., lead-acid forklifts) carried with batteries installed |
The distinction matters at the booking stage. A power bank (UN3480) and a phone with a battery inside (UN3481) are not the same commodity, they are not declared the same way, and carriers price them differently. The same logic now applies to vehicles: an e-bike and an electric forklift may both be “battery powered,” but their UN numbers depend on battery chemistry — and the Dangerous Goods Declaration must show the entry that matches the IMDG 42-24 Dangerous Goods List word for word.
UN 3556 / 3557 / 3558: The New Vehicle Entries (Formerly UN 3171)
What changed on 1 January 2026
IMDG Code Amendment 42-24 removed lithium-ion, lithium-metal, and sodium-ion powered vehicles from the generic UN 3171 entry. As Maersk’s customer advisory states: “The generic classification UN 3171, Class 9 — ‘Battery-powered vehicle’ is no longer permitted for lithium or sodium-ion powered vehicles.” All such shipments must be declared as:
- UN 3556 — Vehicle, lithium ion battery powered
- UN 3557 — Vehicle, lithium metal battery powered
- UN 3558 — Vehicle, sodium ion battery powered
The transitional year ended 31 December 2025. From 1 January 2026, using UN 3171 for an e-bike, an electric car, or any other lithium/sodium-ion powered vehicle is non-compliant and will be rejected at booking or at the port gate.
Which vehicles are affected
Any self-propelled vehicle with a lithium-ion, lithium-metal, or sodium-ion traction battery falls under the new entries:
- Electric cars, vans, and trucks
- E-bikes, e-scooters, and electric motorcycles
- AGVs (automated guided vehicles) and electric forklifts
- Electric sweepers, golf carts, and other industrial vehicles
If the vehicle is driven by a wet battery (e.g., lead-acid), sodium metal, or sodium alloy battery and ships with the battery installed, it stays under UN 3171. If the battery is lithium, lithium-metal, or sodium-ion chemistry, the new entries apply.
Packing instruction P912
The three new vehicle entries come with a new packing instruction, P912. Vehicles must be secured in strong, rigid outer packaging of suitable material and design to prevent accidental operation during transport. Two practical points:
- P912 packagings do not need to be UN type-tested under 4.1.1.3 — the rigid enclosure requirement is the standard.
- Under certain conditions, vehicles may be carried unpackaged (e.g., on roll trailers or in dedicated stowage) — but the stowage must still follow the IMDG provisions and carrier policy.
Marking and labelling when fully enclosed
If a vehicle is fully enclosed by packagings, crates, or other means that prevent ready identification, the package and transport unit must display the relevant Class 9 marks, labels, and placards per IMDG Chapter 5.2. An enclosed, unlabelled EV in a box no longer benefits from being “obviously a vehicle.”
Carrier placarding: SP 962
Under Special Provision 962, carriers increasingly require hazardous containers to be placarded on all four sides. Maersk recommends four-side placarding for all SP 962 containers before gate-in to avoid disruption. Confirm the placarding requirement with your forwarder before the container leaves the factory.
State of charge for vehicles
The same fire-risk logic that limits standalone batteries applies to vehicles. Carriers commonly require vehicle batteries to be shipped at a reduced state of charge (often ≤30% or a manufacturer-specified level), and many require the traction battery to be secured or partially disconnected where practical. Confirm the SoC and battery-disconnection rules with the carrier for your port pair.
UN38.3 Testing: The Non-Negotiable Prerequisite
Before any lithium battery — or any vehicle containing one — can be shipped by sea, its design type must pass the tests defined in Section 38.3 of the UN Manual of Tests and Criteria, universally known as UN38.3. There are no exceptions: every battery model must have a valid UN38.3 test summary issued by a qualified testing laboratory.
| Test (T1–T8) | What It Verifies |
|---|---|
| T1 Altitude simulation | Safe at low pressure (air transport context) |
| T2 Thermal test | Withstands rapid temperature cycling |
| T3 Vibration | Survives transport vibration |
| T4 Shock | Survives impacts |
| T5 External short circuit | Does not catch fire when short-circuited externally |
| T6 Impact / crush | Does not catch fire when crushed |
| T7 Overcharge | Safe under overcharge |
| T8 Forced discharge | Safe under forced discharge |
Practical points for shippers:
- The report must cover your exact battery model. A “similar” model report does not satisfy the carrier.
- The report is model-specific, not shipment-specific. You do not re-test per shipment, but the test summary must accompany the file.
- Test summaries should be current. Carriers increasingly ask whether the battery design has changed since the test; if the cell chemistry or casing changed, re-testing may be required.
- UN38.3 is also the gateway to everything else. Without the test summary, no classification, no packaging certificate, no booking. It is the first document to request from your battery factory.
For the latest evolution of these standards and how they apply to China exports, see our guide on lithium battery testing standards.
Packaging Requirements: Batteries and Vehicles
Batteries that pass UN38.3 still cannot be shipped in any box. The packaging must meet the UN performance standard appropriate to the packing group, and it must be marked accordingly.
The four packaging rules that matter most for batteries:
- UN-certified outer packaging. The box must carry a UN specification mark (e.g., a 4G fibreboard box certified for the relevant packing group), and the certification must be current (within its validity period).
- Inner packaging with short-circuit protection. Each battery or cell must be protected against short circuit — terminal insulation, non-conductive divider, or individual pouch. This is the single most common physical defect found during inspections.
- Proper cushioning and segregation. Batteries must not shift, and cells of opposite polarity must not come into contact.
- Correct marking and labeling. Every package must show:
- The Class 9 label (striped black-and-white hazard label);
- The UN number and Proper Shipping Name (e.g., “Lithium-ion batteries, UN3480” or “Vehicle, lithium ion battery powered, UN3556”);
- The lithium battery handling mark (per the current IMDG format);
- The “Lithium battery” transport mark where the reduced-requirement provisions (SP188) apply.
For vehicles (UN 3556/3557/3558): follow packing instruction P912 — secure the vehicle against accidental operation in strong rigid outer packaging, or confirm unpackaged carriage conditions with your forwarder. If the vehicle is fully enclosed, apply the Chapter 5.2 marks and labels.
For China exports, the packaging also needs the Dangerous Goods Packaging Use Certificate issued by the local inspection authority (a use qualification inspection confirming the packaging is fit for the specific goods). Without it, the customs gate will not clear the shipment.
Complete Documentation Checklist for Lithium Battery Ocean Freight
Get these documents in order before you request a booking:
| Document | What It Must Show | Issued By |
|---|---|---|
| UN38.3 test summary | Model match, T1–T8 results | Testing laboratory |
| MSDS/SDS | Product identity, Class 9, Section 14 with the correct UN number | Battery / vehicle manufacturer |
| Dangerous Goods Declaration (DGD) | UN number, PSN, class, quantity, emergency contact | Shipper/freight forwarder |
| DG Packaging Performance Certificate | UN mark validity, packing group | Testing laboratory |
| DG Packaging Use Certificate (China) | Use qualification for the specific consignment | Local inspection authority (e.g., commodity inspection bureau) |
| Transport Condition Identification Report | Classification confirmation for customs declaration | Qualified lab (e.g., Shanghai Institute of Chemical Industry) |
The consistent thread across all six documents is the UN number: UN3480, UN3481, UN3556, UN3557 or UN3558 must appear identically on the MSDS, the DGD, the booking, and the package marks. For vehicles, the PSN must match the 42-24 Dangerous Goods List exactly (e.g., “VEHICLE, LITHIUM ION BATTERY POWERED”). Our pre-shipment review at Eastern Cargo checks exactly this cross-document consistency before anything reaches the carrier.
Quantity Limits, Special Provisions & Carrier Rules
Not every battery shipment needs the full DG treatment, but the rules are precise:
- SP188 (small batteries). Cells up to 20 Wh and battery packs up to 100 Wh shipped in equipment or packed with equipment (UN3481/UN3091) can qualify for reduced requirements: no Class 9 label on the outer package if it passes the drop and crush tests, and a lithium battery mark is required instead. UN3480 standalone batteries do not benefit from SP188 — this is the trap that catches power-bank shippers.
- Vehicle-specific provisions. The new vehicle entries carry revised Special Provision 388 (SP388), which directs lithium-ion, lithium-metal, and sodium-ion vehicles to their dedicated entries and clarifies handling of prototype batteries and partially disassembled vehicles.
- Quantity limits per package and per container. Carriers publish state of charge (SoC) limits (commonly ≤30% for many carriers on UN3480 and on vehicle traction batteries), package quantity caps, and container loading rules. Bookings outside these limits are rejected at space confirmation, not at the gate.
- Stowage and segregation. Class 9 batteries must be stowed clear of heat sources and incompatible cargo; some carriers require them in specific positions. For UN3536 (lithium batteries installed in a transport unit), the stowage category changed to stowage category D under 42-24.
- Sodium-ion entries. UN3551 (sodium-ion batteries) and UN3552 (sodium-ion batteries in/with equipment) follow the same testing and packaging logic as their lithium counterparts — do not assume they can be shipped as general cargo.
These rules change with every IMDG amendment cycle. The 2026 cycle (Amendment 42-24) tightened documentation expectations for battery and vehicle shipments, so if your existing process predates 2026, revisit it before your next booking. For a full review of what changed in the 42-24 amendment, see our IMDG Code 2026 update guide.
How to Choose a Lithium Battery Freight Forwarder in China
Battery cargo is where the difference between a general forwarder and a DG specialist shows up fastest. A general freight forwarder can book a container of shoes without reviewing anything; a battery shipment fails at the first port inspection if the file is wrong. When selecting a forwarder for lithium batteries from China, check four things:
- IMDG certification and DG depth. The team should hold IMDG training certificates and handle battery cargo regularly — not “sometimes” — because carrier rules on state of charge and special provisions change every amendment cycle.
- Pre-booking document review. The forwarder should review your UN38.3 summary, MSDS, and packaging certificates before requesting space, and tell you exactly what to correct. A forwarder who asks no questions about your battery file is a risk, not a convenience.
- Direct carrier relationships for DG space. DG bookings are not the same as general bookings. A forwarder with allocated DG space at your port pair gets your container on board when space is tight, instead of watching it roll to the next vessel.
- China export process knowledge. Lithium battery exports from China require the dangerous goods packaging use certificate and the transport condition identification report. A forwarder who handles these with the local inspection authorities prevents customs-gate rejections that no carrier booking can fix.
These are the exact standards the team at Eastern Cargo applies to every battery and electric-vehicle consignment we ship from Qingdao and other Chinese ports — document review first, then booking, then a transparent quote.
5 Common Reasons Lithium Battery Shipments Get Rejected
- No or mismatched UN38.3 report — the report does not match the battery model on the invoice.
- UN3480 declared as UN3481 — standalone power banks booked under the equipment provision to avoid requirements; detected at booking and rejected.
- Vehicle still declared under UN 3171 — e-bikes, EVs, and other lithium/sodium-ion vehicles booked under the old entry after 1 January 2026; rejected as non-compliant under 42-24.
- Non-UN packaging — standard cartons without the UN specification mark, a certificate past its validity, or a vehicle not secured per P912.
- Fully charged cells — SoC above the carrier limit at the container gate.
- Document mismatch — UN number differs between MSDS, DGD, and package marks.
Every one of these is preventable before booking. If you are unsure about any of them, ship through an IMDG-certified DG freight forwarder who reviews the file before it reaches the carrier — that single step removes most rejection causes.
Frequently Asked Questions
Q1: Can lithium batteries be shipped by sea from China? Yes. Lithium-ion and lithium-metal batteries are shipped by ocean freight every day from Chinese ports. They are Class 9 dangerous goods, so they need UN38.3 testing, certified packaging, a DGD, and a DG-capable freight forwarder.
Q2: What is the difference between UN3480 and UN3481? UN3480 is a standalone lithium-ion battery (e.g., a power bank). UN3481 is a lithium-ion battery contained in or packed with equipment (e.g., a phone). UN3481 can benefit from reduced requirements under SP188 for small cells; UN3480 cannot.
Q3: What is UN3556 and when do I need it? UN3556 is the new IMDG entry for vehicles powered by lithium-ion batteries (e-bikes, EVs, AGVs, electric forklifts). Since 1 January 2026, these vehicles can no longer be booked under UN 3171 — use UN3556 for lithium-ion, UN3557 for lithium-metal, and UN3558 for sodium-ion powered vehicles.
Q4: Can I still use UN 3171? Only for vehicles or equipment powered by wet, sodium-metal, or sodium-alloy batteries with the battery installed. For any lithium-ion, lithium-metal, or sodium-ion powered vehicle, UN 3171 is no longer permitted under IMDG 42-24.
Q5: Do I need UN38.3 for every shipment? You need a valid UN38.3 test summary for the battery model you are shipping. It is not per-shipment testing, but the document must match the exact model.
Q6: What is the maximum state of charge for shipping? Most major ocean carriers require UN3480 cells and packs — and many require vehicle traction batteries — at ≤30% state of charge. Always confirm the limit with your carrier or forwarder before packing.
Q7: Can I ship lithium batteries by air instead? Yes, but UN3480 standalone batteries are prohibited as cargo on passenger aircraft, and air freight requires IATA Dangerous Goods Regulations compliance plus significantly higher cost. For volume battery cargo, ocean freight is the standard route.
Q8: How long does a lithium battery sea shipment from China take? Typical transit to Europe is 25–40 days and to the US West Coast 15–25 days, depending on the port pair, plus 3–7 days for DG booking and documentation before sailing.
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Ship Your Batteries Without the Rejection Drama
Lithium battery compliance is a checklist, not a mystery. Send us your battery model details, UN38.3 summary, and destination port — our IMDG-certified team will review the file, confirm the correct UN number and packaging, and return a transparent HAZMAT quote, usually within 24 hours.