The classification decides everything
Lithium-ion cells and batteries carried on their own are UN3480. The same cells packed with equipment, or installed in it, are UN3481. Lithium-metal equivalents are UN3090 and UN3091. All are Class 9.
The classification drives the packing, the marking, the paperwork and which vessels will take the container. Getting it wrong at booking is the usual cause of a shipment sitting at origin.
What the factory has to give you
A UN38.3 test summary for the exact cell, issued by the cell manufacturer or the test house. This is the document that most often does not exist for a cheap cell, and it cannot be produced retrospectively.
A safety data sheet, and packing that matches the classification — including the correct marks and labels on each package and the outer carton.
A dangerous goods declaration for the shipment. We check these before a booking is made rather than after the container is stuffed.
Why bookings fall through
Not every carrier accepts Class 9 lithium on every service, and DG slots on a vessel are limited. A forwarder without a DG desk will often quote on the assumption the cargo is general, then withdraw.
Storage and demurrage build up quickly when a DG shipment is held for paperwork, because the container cannot simply be moved to an ordinary yard.
Sea, not air
Air carriage of lithium cells is tightly restricted and expensive. For cells in commercial quantity, sea freight is the practical route, and it is the only mode we run.
A note on accuracy
Dangerous goods rules are revised on a regular cycle and vary by carrier and by port. Treat the above as orientation, not as a compliance checklist — we confirm the current requirement with the carrier for each shipment before booking.
Related questions
[01]What is the difference between UN3480 and UN3481?
UN3480 covers lithium-ion cells and batteries shipped on their own. UN3481 covers the same cells when they are packed with equipment or already installed in it. Both are Class 9, but the packing, marking and documentation differ.
[02]What is a UN38.3 test summary and do I need one?
It is a summary of the transport safety tests a lithium cell must pass, issued by the cell manufacturer or test house. You need it to ship legally, and it has to exist for the specific cell — it is not something a supplier can write for you after the fact.
[03]Can lithium batteries be shipped by sea from China?
Yes, as Class 9 dangerous goods on a carrier and service that accepts DG, with the correct declaration, packing and marking. Availability of DG slots is the practical constraint, not legality.
Read next
- DDP, FOB or EXW: which should you buy on when importing from China?What each Incoterm actually covers, where the surprise costs sit, and the question that decides whether a DDP quote is real.