Shipping Batteries & Electronics from China (2026): The Lithium & Dangerous-Goods Guide

Anything with a rechargeable battery in it, and that is most consumer electronics now, is a dangerous good in the eyes of a shipping line. Earbuds, power banks, cordless devices, e-bikes, LED gadgets: the moment there is a lithium cell inside, the parcel is subject to a body of dangerous-goods rules that tightened significantly in 2026. Get the classification, packing and paperwork right and battery products ship reliably from China. Get them wrong and shipments are rejected at booking, held at the port, or, in the worst case, become a genuine safety incident.

This is the 2026 guide to fulfilling battery-powered electronics from China: what changed on 1 January, the documents that gate every shipment, and where a fulfilment partner's job ends and your manufacturer's begins.

Quick answer: Lithium batteries are Class 9 dangerous goods. From 1 January 2026, IMDG Amendment 42-24 requires most lithium-ion batteries shipped by sea, including those in equipment (UN3481), to be at no more than 30% state of charge, and it adds new rules for battery-powered vehicles and sodium-ion cells. Every shipment needs a valid UN38.3 test summary, an SDS/MSDS, Class 9 labelling and correct declarations. Those test documents come from your manufacturer; we handle compliant packing, documentation and booking on lanes that accept batteries.

What changed on 1 January 2026

The maritime rulebook for dangerous goods, the IMDG Code, moved to Amendment 42-24, mandatory from 1 January 2026. For anyone shipping battery products by sea, three changes matter most:

• The 30% state-of-charge rule. Most lithium-ion batteries offered for sea transport, including those packed with or contained in equipment under UN3481, must now be shipped at a state of charge not exceeding 30% of rated capacity. A battery at half charge that shipped fine last year may be non-compliant now. Lines increasingly ask for written confirmation of the state of charge on higher-capacity batteries.
• Battery-powered vehicles reclassified. The old generic classification that covered all battery-powered vehicles is no longer permitted for lithium-ion or sodium-ion powered vehicles; dedicated UN numbers now apply. If you ship e-bikes, scooters or similar, the declaration has changed.
• Sodium-ion joins Class 9. For the first time, sodium-ion batteries are classified as Class 9 dangerous goods rather than moving as general cargo.

If any product you sell has a cell in it and moves by sea, Amendment 42-24 changes how it must be packed, declared and documented.

Classification: know your UN number

Lithium batteries are Class 9 dangerous goods, and the exact UN number depends on chemistry and how the battery travels:

• UN3480: lithium-ion batteries shipped on their own.
• UN3481: lithium-ion batteries packed with, or contained in, equipment. This is most finished electronics.
• UN3090 / UN3091: the lithium-metal equivalents (non-rechargeable), alone or in equipment.

Class 9 status is not a formality. It dictates the packaging standard, the labelling, the declarations and which carriers and lanes will even accept the goods. Declaring a battery product as ordinary cargo to dodge the process is both non-compliant and dangerous, and it is exactly what customs and carrier screening is looking for.

The documents that gate every shipment

No battery ships without paperwork, and missing or invalid documentation is the single most common reason lithium shipments are rejected. The core set:

• UN38.3 test summary. Proof the cell or battery passed the required series of safety tests. This is the foundational document.
• Safety Data Sheet (SDS/MSDS). The hazard and handling data for the specific battery.
• Safe Transport Certificate, where required, plus correct Class 9 labels and mode-specific dangerous-goods declarations.

Here is the honest division of labour: these documents originate with your battery cell or product manufacturer, not with us. The UN38.3 testing is done at the manufacturing stage; a fulfilment warehouse cannot create a test report for a cell it did not make. What you must do is get valid, current documentation from your supplier for every battery variant before goods ship. What we do is verify it is present and correct, pack and label to the dangerous-goods standard, prepare the declarations, and book the shipment on a carrier and lane that accepts it.

Can it go by air? Often no

Sellers used to fast air express are frequently surprised here. Air transport of lithium batteries is tightly restricted. Some batteries above certain watt-hour or lithium-content thresholds cannot travel by passenger air at all, standalone batteries are refused on many express lanes, and whether a given product can fly depends on the specific battery, how it is packed with the device, and the destination country's rules.

For many larger or higher-capacity battery products, sea freight as properly declared dangerous goods is the compliant route, not air express. Planning around that from the start, rather than discovering it when an express booking is rejected, is part of fulfilling this category well. Our freight team books dangerous-goods sea and, where the product and destination allow, compliant express lanes.

How we fulfil battery products from Shenzhen

With the manufacturer's documentation in hand, the fulfilment side is where we add value:

• Verify and organise documentation so every shipment leaves with a valid UN38.3 summary and SDS matched to the correct SKU.
• Dangerous-goods packing and labelling to the Class 9 standard, including state-of-charge handling for lithium-ion.
• Correct declarations and booking on carriers and lanes that accept the specific battery and destination.
• Inspection on the bench, because a swollen or damaged cell caught in Shenzhen never becomes an incident in transit. Our QC process checks condition before anything is packed.

Where your job ends and ours begins

To be blunt about the boundary: battery testing, the UN38.3 report and the SDS are your manufacturer's responsibility. No fulfilment provider can manufacture that compliance for you, and any that claims it can is one to avoid. Our role is to handle your compliant product correctly, pack, label, document and ship it to the dangerous-goods rules, and route it on a lane that will carry it. Sell a battery product without valid test documentation and no reputable partner should, or will, ship it.

The bottom line

Battery-powered electronics are a strong, high-value category to fulfil from China, and a heavily regulated one that got stricter in 2026. Know your Class 9 UN number, get valid UN38.3 and SDS documentation from your manufacturer for every battery, plan for the 30% state-of-charge rule and the reality that many items must go by sea, and work with a partner that packs, documents and books dangerous goods properly. Tell us about your battery products and we'll map a compliant route.