Watt-hours (Wh)
The number that rules everything. Read it from the label, or convert with Wh ≈ mAh × nominal voltage ÷ 1,000. Higher watt-hours mean tighter limits and, past a point, no air option.
Guide
How to Ship Power Banks from China
Power banks are one of the highest-volume lithium products leaving China — and one of the easiest to have refused at the warehouse door. Here is how portable chargers are classified, the paperwork they need, and the shipping methods that actually accept them.
By the Cargo163 operations team · Updated 30 September 2026 · 8 min read
Classification
Are power banks dangerous goods?
Yes. In the eyes of every major transport regulation, a power bank is dangerous goods. A portable charger is a self-contained lithium-ion battery, and lithium-ion cells and batteries are regulated for air, road, rail and sea movement. When a power bank travels on its own — not packed with or inside the device it charges — it is usually assigned UN3480, “Lithium ion batteries”. A battery shipped inside or alongside the equipment it powers may instead fall under UN3481, but a standalone spare charger is almost always UN3480.
That classification brings the Class 9 (miscellaneous) dangerous-goods rules with it, so power banks cannot be sent as ordinary parcels. Capacity matters: carriers commonly apply extra limits, smaller permitted quantities or outright bans above recognised watt-hour thresholds — the region around 100 Wh is a frequently referenced cutoff — and very high-capacity units may not be accepted for air at all. Because the exact treatment depends on the carrier, mode and destination, watt-hours are the first specification any forwarder will ask about.
The variables
Key specs that decide how they can ship
Four specifications drive almost every decision about how a power bank can move. Get them documented accurately before asking for a route.
State of charge
Lithium-ion batteries shipped alone are commonly required to be at a reduced charge — a frequent guideline is 30% or less — because a partly discharged cell is less energetic if it is damaged.
Quantity
How many batteries in each package, and how many packages in the shipment. Express services cap cells per box; dangerous-goods air freight handles larger counts under full DG rules.
Configuration
Standalone, packed-with-equipment or contained-in-equipment changes the UN number, the applicable packing instruction and the paperwork required.
Paperwork
Documents you will need
Forwarders and airlines will usually ask for a small pack of paperwork before accepting a power-bank shipment:
- UN38.3 test summary — proof the model passed the UN transport tests, in the standardised summary format
- MSDS / SDS — a safety data sheet covering the lithium-ion chemistry and hazards
- Specification sheet — the product datasheet confirming model, cell type and watt-hours
- Dangerous Goods Declaration (DGD) — needed for full air-freight consignments tendered as dangerous goods
Every document should name the exact model in the boxes, and the stated watt-hours should match the label on the units and the marks on the carton. A summary for a different charger, or figures that contradict the paperwork, is one of the most common rejection reasons.
Acceptance is per shipment
There is no blanket approval that follows a power-bank model from one booking to the next. Classification is fixed, but whether a specific consignment is accepted depends on its quantity, packaging, route, carrier and the current dangerous-goods edition in force — so the documents are re-checked every time.
Choosing a lane
Express vs air freight for power banks
Two practical routes cover most power-bank exports from China, and they suit different volumes. The right one depends on how many chargers you are moving and how the courier or airline wants them handled.
Express couriers — DHL, UPS, FedEx
Best for smaller, eligible parcels. Each courier publishes its own lithium-battery acceptance rules, so not every service or lane will take power banks, and some are restricted to certain destinations. The parcel still needs the correct UN classification, documents, packaging and marks; the courier then manages the dangerous-goods detail on your behalf.
Dangerous-goods air freight
For larger quantities and palletised consignments. The shipment is tendered as Class 9 cargo with a DGD, packed by a trained person and fully labelled — and depending on watt-hours and quantity it may require cargo-aircraft-only handling. Neither route is automatic: carriers reserve the right to refuse, and approval is decided shipment by shipment.
Boxes and marks
Packaging & labelling basics
Correct packaging and marking are as important as the paperwork — a well-documented shipment with a non-compliant box will still be stopped.
Short-circuit protection
Protect every terminal individually — caps, tape or separate anti-static inner packs — so contacts cannot touch metal or each other in transit.
Cushioning & rigid outer
Batteries must not move or be crushed. Use void fill and a strong outer carton rated for the packed weight and stacking.
Lithium battery mark
The rectangular mark showing the battery symbol, the UN number and a telephone contact, used on smaller conforming packages.
Class 9 label
Full dangerous-goods shipments carry the Class 9 lithium battery label alongside the shipping name and UN markings on the box.
Shipping power banks out of China?
Tell us the model, watt-hours and quantity — we check the UN classification and documents first, then match your cargo to an express or dangerous-goods air route that will actually accept it.
Related reading: Battery Shipping from China · UN3480 vs UN3481 · UN38.3 Test Explained · Battery Shipping Cost · All guides
Note: Classification, documentation, packaging and acceptance requirements for lithium-ion power banks vary by model, watt-hours, transport mode, destination and carrier, and are decided per shipment. This guide is general logistics information and does not replace the applicable dangerous-goods regulations. Cargo163 reviews each shipment's documents before confirming a solution.