A Comprehensive Guide to Safely Shipping Lithium Batteries from China via Sea or Air

As a leading international freight forwarder based in Shenzhen, China, we understand the critical importance of compliance and safety when transporting lithium batteries. This guide is designed to inform overseas buyers sourcing from China, supply chain managers, and the general public about the essential regulations and procedures for shipping these regulated items.

1. The Nature of Lithium Batteries as Dangerous Goods

Lithium batteries are classified as Class 9 Miscellaneous Dangerous Goods under international regulations, including the UN Recommendations on the Transport of Dangerous Goods and the International Maritime Dangerous Goods (IMDG) Code. This classification is due to the reactivity of lithium metal, which poses potential safety hazards such as fire if the batteries are damaged, defective, or improperly packaged. It is crucial for all parties in the supply chain to recognize this classification.

2. Mandatory Chinese Export Compliance

According to China's Law on Import and Export Commodity Inspection, the use of certified dangerous goods packaging is mandatory for lithium battery exports. The exporter (or manufacturer) must obtain two key certificates from the local Customs authority:

• Performance Test Certificate for Transport Packaging of Export Goods: This certifies that the packaging design type has passed required performance tests. To apply, the packaging manufacturer must first possess a valid Export Dangerous Goods Packaging Manufacturer Code (format: C + 6 digits, e.g., C52XXXX, where "52" represents Huangpu Customs).
• Use Certificate for the Transport Packaging of Dangerous Goods for Export (commonly known as the "Dangerous Goods Package Certificate"): This certifies that the specific goods have been properly packed in the certified packaging for shipment. The application must specify the lithium battery's rated energy in Watt-hours (Wh).

During the inspection for the Use Certificate, Customs officials verify critical packing details, including:

• Correct and legible UN packaging marks, batch numbers, and hazard labels on the package.
• Clean, residue-free, and leak-proof external packaging.
• Secure and undamaged packaging structure (e.g., nailed wood cases must have clinched nails).
• Electrical Insulation: Batteries or cells must be separated by non-conductive material to prevent contact and short-circuiting.
• Protection against short circuits and proper stacking to prevent terminals from bearing the weight of other batteries.

3. Key Documents Required for Lithium Battery Shipment

To book cargo space with a shipping line or airline, the following documents are typically required:

• Material Safety Data Sheet (MSDS) for the lithium batteries (bilingual Chinese/English recommended).
• Dangerous Goods Package Certificate, which includes the Packaging Specification.
• Performance Test Certificate (mentioned above).
• Dangerous Goods Classification Identification Report.
• Transport Condition Assessment Report – may be required by the carrier.
• Shipping Instruction Letter/Booking Note containing complete shipper/consignee details, port information, cargo description, weight, dimensions, and any special handling notes.

Required Application Materials:

• For the Performance Test Certificate: Factory inspection report, corporate declaration, supply contract, and periodic test reports (if applicable).
• For the Use Certificate: Factory inspection report from the company using the packaging, the original Performance Test Certificate, and for first-time use of certain plastic/composite containers, a Compatibility Test Report or self-declaration.

4. Summary of the Export Process

The standard workflow involves:

• A. Preparation: Obtain the Manufacturer Code and complete external packaging compliance filing with the local Commodity Inspection Bureau.
• B. Certification: Apply for and secure the Performance Test Certificate and Use Certificate from Customs, using the documents listed above.
• C. Booking: Submit the Dangerous Goods Package Certificate, MSDS, and other required documents to your freight forwarder or directly to the carrier to apply for dangerous goods slot booking for sea or air freight.