Lithium batteries power almost every modern consumer electronic product—from smartphones, laptops, and power banks to advanced drones and electric surfboards. However, because they contain highly flammable electrolytes, international transport agencies classify them as Class 9 Dangerous Goods (DG).
If handled improperly, physical damage, internal short-circuits, or manufacturing defects can trigger thermal runaway, causing the batteries to overheat and catch fire. Consequently, shipping batteries out of China involves strict international enforcement.
In this guide, updated with the latest 2026 international safety frameworks, we explain how to classify your battery cargo, the vital documents your Chinese factory must provide, and how to stay compliant with global shipping laws.
1. Classifying Your Battery Shipment (UN Numbers)
Before booking space with a carrier, your China freight forwarder must determine the exact UN Number for your cargo. Classification depends on the chemical makeup of the battery and how it is packed.
Lithium-Ion Batteries (Rechargeable)
- UN 3480 (Lithium-ion batteries shipped alone): Bulk batteries, replacement cells, or loose power banks. Strictly forbidden on passenger aircraft as cargo; they must move via ocean freight or specialized cargo planes.
- UN 3481 (Lithium-ion batteries packed with equipment): A drone shipped with its batteries packed inside a separate compartment within the same box.
- UN 3481 (Lithium-ion batteries contained in equipment): A smartphone or laptop where the battery is pre-installed inside the sealed device.
Lithium-Metal Batteries (Non-Rechargeable / Disposable)
- UN 3090 (Lithium-metal batteries shipped alone): Loose industrial or medical batteries.
- UN 3091 (Lithium-metal batteries packed with or in equipment): Devices packaged with or pre-fitted with disposable button cells or AA lithium batteries.
2. Crucial 2026 Regulatory Update: The 30% State of Charge (SoC) Rule
Critical Compliance Alert: Previously, only standalone lithium-ion batteries (UN 3480) were restricted to a maximum 30% charge during air transport. Under the current 2026 IATA Dangerous Goods Regulations (67th Edition), this safety rule has expanded significantly.
Starting January 1, 2026, lithium-ion batteries packed with equipment (UN 3481) with a rating greater than 2.7 Wh, alongside lithium-powered vehicles (UN 3556) exceeding 100 Wh, must also be shipped at a State of Charge (SoC) not exceeding 30% of their rated design capacity for air freight.
You must instruct your Chinese factory to configure their production lines to discharge the cells to 30% or less prior to final export packing.3. Three Mandatory Compliance Documents
To book a dangerous goods slot with a shipping line or airline in China, your supplier must furnish three legal certificates. If your factory cannot provide these, no legitimate carrier will accept the cargo:
1. UN 38.3 Test Summary (UN38.3 Test Report)
This document proves the battery model successfully completed eight rigorous safety tests in a certified laboratory:
- Altitude Simulation (low pressure)
- Thermal Test (extreme temperature cycles)
- Vibration Test
- Shock Test
- External Short Circuit Test
- Impact / Crush Test
- Overcharge Test
- Forced Discharge Test
2. MSDS (Material Safety Data Sheet)
A technical document specifying the chemical composition of the cargo, potential hazards, emergency firefighting instructions, and safe handling procedures during transportation.
3. Appraisal for Material Transportation Conditions (运输条件鉴定书)
Issued by authorized civil aviation or maritime institutions in China (such as the Shanghai Research Institute of Chemical Industry), this official appraisal formally declares whether the goods are classified as restricted or unrestricted dangerous cargo for the chosen transit year.
4. Packing and Labeling Standards
DG cargo requires specialized, resilient packaging designed to prevent short circuits caused by physical friction or shifting during transit.
- UN-Specification Packaging: Standalone bulk batteries require heavy-duty cardboard boxes or crates certified to withstand structural tests, including a 1.2-meter drop test and a 3-meter stacking weight test.
- Short-Circuit Prevention: Individual batteries must be enclosed in non-conductive inner packaging (such as individual plastic blister packs or wrapped terminals) to ensure they cannot touch other batteries or metallic surfaces.
- Required Hazard Labels: Packages must display the standard Class 9 Lithium Battery Hazard Label showing a bundle of batteries over black-and-white vertical stripes. If shipping bulk batteries via air, you must also attach the orange Cargo Aircraft Only (CAO) label.
[ Class 9 Battery Label ] + [ Cargo Aircraft Only Label ]
(Required for all battery shipments) (Required for UN3480/UN3090 by Air)5. Frequently Asked Questions (FAQ)
Q1: Can I ship standalone power banks via standard Air Express (DHL/FedEx)?
Answer: No. Standard door-to-door express courier networks do not accept loose power banks or standalone batteries from standard accounts because they fall under UN 3480. They must be processed via specialized DG Air Freight channels using dedicated cargo aircraft, or shipped via Ocean Freight (LCL/FCL) using certified hazardous materials containers.
Q2: What happens if a supplier tries to hide lithium batteries inside a general cargo shipment?
Answer: This is called undeclared dangerous goods, and it is a severe criminal offense. Chinese ports and airport customs hubs use advanced dual-view X-ray scanners to inspect outward cargo. If hidden batteries are intercepted, customs will permanently impound the entire shipment, black-list the exporter, and levy massive structural fines on both the shipper and the broker.
Q3: Are sodium-ion batteries subject to the same strict rules as lithium batteries?
Answer: Yes, the framework governing alternative chemistries has tightened. Modern shipping protocols align sodium-ion batteries right alongside lithium protocols. They require successful UN 38.3 testing, distinct UN classification numbers, and must adhere to the 30% state of charge maximum limit during air transport.
Q4: My device has a tiny button-cell battery pre-installed. Does it still require full DG documentation?
Answer: If the battery is a small lithium-ion cell under 20 Wh (or lithium-metal under 1 gram of lithium content) and is safely contained inside the equipment (UN 3481/UN 3091 Section II), it qualifies for a regulatory exception. While it still requires a valid UN 38.3 test summary from the manufacturer, it can often bypass full dangerous goods declarations and fly on passenger aircraft, provided the outer package bears a standard Lithium Battery Mark.
Q5: Can damaged or recalled lithium batteries be shipped from China for repairs?
Answer: No. International maritime and aviation laws strictly prohibit the commercial transport of damaged, leaking, defective, or recalled lithium batteries. If an item is deemed a safety hazard or has a history of swelling, it is entirely barred from global transport networks.
Planning to Export Electronic Products or Batteries from China?
Don’t let hazardous material compliance delay your supply chain. Provide our dangerous goods specialists with your battery parameters (Watt-hours or lithium weight), and we will engineer a compliant packing and routing blueprint for you. [Speak with a DG Logistics Expert Now]