I. Compliance Prerequisites for Importing Energy Storage Components
A key characteristic of importing energy storage components is that core items, such as lithium batteries, are classified as dangerous goods. Both lithium-ion and lithium-metal batteries fall under Class 9 (Miscellaneous Dangerous Substances and Articles) of the UN Recommendations on the Transport of Dangerous Goods – Model Regulations: lithium-ion batteries shipped alone are classified as UN 3480, while those contained in equipment are UN 3481;
lithium-metal batteries are classified as UN 3090/3091. Importers must possess the appropriate qualifications: generally, this requires a “Record-filing for Foreign Trade Operators,” and if hazardous chemicals are involved, a “Hazardous Chemical Operation License” or a filing for hazardous chemical import/export operators is also required.
Compliance hinges on clarifying tax, licensing, and inspection requirements prior to declaration: lithium battery imports typically involve tariffs and VAT, require specific certifications (UN38.3, MSDS), and necessitate inspections (for dangerous goods);
missing any of these elements can lead to cargo seizure or delays. Verification of certifications is essential: UN38.3 (Tests T1–T8, mandatory for air/sea transport), IEC 62133, UL 1642/2054, and CE;
power batteries may also require 3C certification. Importers should request complete test reports from suppliers—rather than just the certificates—and verify the issuing body (ISO 17025 accreditation), the date, and the specific test results.
II.
Classification, Documentation, and Declaration Preparation
The second step in the import and procurement of energy storage components involves classification, documentation, and preparation for customs declaration.
Classification: Batteries fall under HS Chapter 85—specifically lithium-ion accumulators (8507.60), primary cells (8506), lead-acid batteries (8507.10/720), and nickel-metal hydride batteries (8507.50). Different tariff rates apply based on the intended use (energy storage, motive power, or consumer electronics); applying for an advance customs classification ruling is recommended to avoid penalties or overpayment of duties due to misclassification.
Tariff rates: MFN duties for lithium-ion batteries are approximately 8%–10% (the 2024 tariff adjustment temporarily lowered the duty on certain lithium-ion battery components from 6% to 3%), plus 13% VAT. The correct HS code determines the required declaration elements and regulatory conditions.
Documentation: Standard commercial documents (contract, commercial invoice, packing list, bill of lading/waybill); corporate credentials (business license, record-filing as a foreign trade operator); battery-specific documents (UN38.3 test report or summary, bilingual MSDS/SDS, dangerous goods declaration specifying UN number/hazard class/packing group, third-party test report, certificate of transport conditions, and import license if applicable). Missing or non-compliant MSDS formats are common reasons for shipment rejection;
pre-screening by professional dangerous goods logistics providers is essential.
Customs Clearance Process and “Two-Step Declaration”: The “Two-Step Declaration” method is the standard procedure for importing energy storage components.
Step 1 (Summary Declaration): For goods not subject to prohibitions, restrictions, or mandatory inspection/quarantine, only nine data elements and two logistics items need to be declared (with additional items required if licenses or inspections apply). Goods can be released after the summary declaration (based on bill of lading info) and—if necessary—port inspection; taxable goods can be released upon submission of a tax guarantee (security deposit, bank guarantee, or guarantee insurance) without needing to submit all supporting documents upfront.
Step 2 (Complete Declaration): The remaining data elements must be declared and taxes paid within 14 days of the transport vehicle’s entry declaration.
The traditional process involves: document exchange (exchanging the original or telex-released Bill of Lading for a Delivery Order) → inspection declaration → customs declaration (submitting the electronic declaration form) → tax payment → customs release → delivery arrangement → (local inspection declaration). The deadline for customs declaration is 14 days from the date the transport vehicle declares its entry;
late declarations incur a surcharge. Compliant goods typically clear customs in about 2 to 4 days; lithium batteries often trigger “Red Channel” inspections, where customs verifies the compliance of the MSDS, UN38.3 test reports, and labeling.
The entire process is handled online via the International Trade “Single Window” platform; for tax-related items, consolidated payments can be made by the end of the fifth working day of the month following the complete tax declaration, thereby easing cash flow pressure.
IV.
Transport and Packaging of Dangerous Goods
The transport and packaging of dangerous goods—such as imported energy storage components—are critical to both customs clearance and safety. Packaging requirements: Operations must comply with the International Maritime Dangerous Goods (IMDG) Code or the IATA Dangerous Goods Regulations (DGR).
Outer packaging must display the UN certification mark (durable, clear, and consistent with the declaration report), the Proper Shipping Name, and the UN number (character height ≥ 12mm). Lithium batteries meeting Special Provision 188 (SP188) criteria may be exempt from certain regulations but must bear the specific lithium battery mark. Batteries with a capacity exceeding 100Wh or a lithium content over 2g per unit require reinforced packaging; individual cells or battery packs with a gross weight of ≥12kg require a sturdy, impact-resistant outer casing. Maritime declaration (for sea transport): The shipper must file a “Safety Suitability Report for Dangerous Goods” (Cargo Declaration) and apply for a “Permit for Ships Carrying Dangerous Goods Entering/Leaving Port” (Ship Declaration) with the maritime administration.
These procedures are handled by qualified declarants who have passed the “Two Personnel” (shipper and packer) competency assessment, using the China Maritime Safety Administration’s “One-Stop Service” platform. Maritime bureaus—such as the one in Zhejiang—have launched “Green Channels” for the “New Three” products (electric vehicles, lithium-ion batteries, and solar cells), offering convenience measures such as waiving repeated submissions of technical specifications for the same manufacturer/consignor/model and implementing a “single-document system” for transshipment.
Export-side packaging assessment: Shipments that do not qualify for exemptions must undergo performance testing and usage assessment for dangerous goods packaging through the local customs authority.
Before transport, confirm that the carrier accepts the specific battery type and route.
V.
Supplier Selection and Risk Control
Supplier selection and risk control for the import of energy storage components determine the smoothness of the customs clearance process.
Supplier Selection: Source suppliers via B2B platforms like Alibaba, Made-in-China, and Global Sources; verify certifications (UN38.3, IEC 62133, UL/CE), documentation completeness, export experience, and familiarity with dangerous goods regulations—as product quality, documentation integrity, and expertise in handling dangerous goods directly impact shipment success. Request samples for safety testing: visual inspection (checking for swelling, corrosion, welding issues, or terminal defects), voltage and capacity testing, internal resistance measurement, and protection circuit verification (BMS cut-off for overcharge, over-discharge, and short circuits), with third-party laboratory verification if necessary.
Risk Control: Have a dangerous goods freight forwarder pre-check documents (ensuring the MSDS format is correct, UN numbers match the actual goods, and labeling is compliant); declare a reasonable dutiable value to avoid customs scrutiny and penalties resulting from under-declaration; utilize “two-step declaration” procedures to expedite cargo release for compliant goods; leverage preferential customs clearance treatment available to AEO-certified enterprises; and mitigate the risk of supply disruptions or delays by diversifying across multiple ports and suppliers.
Contracts should clearly specify Incoterms (e.g., DDP, which can include destination clearance and delivery), delivery schedules, packaging and dangerous goods liability, and payment terms (e.g., L/C or milestone-based payments).
For compliant shipments, it is recommended to engage a professional dangerous goods import agent for the initial process, transforming customs clearance from a major obstacle into a routine procedure.
Conclusion
The import procurement process for energy storage components forms a closed loop comprising compliance, classification, customs clearance, transportation, and supplier selection. As lithium batteries are classified as dangerous goods, it is essential to prepare the UN38.3 report, MSDS, and dangerous goods declaration, while verifying all certifications. Classification should be handled under codes such as HS 8507.60 (subject to 8–10% tariffs and 13% VAT), with the option for pre-classification. Expedite the process by utilizing the “two-step declaration” method and releasing goods within the 14-day customs declaration window. Ensure compliance with UN 3480/3090 labeling and IMDG/IATA packaging standards, and complete the necessary maritime cargo and vessel declarations.
Finally, select professional suppliers with complete documentation and maintain records for traceability.
Prioritizing compliance and document verification before cargo release ensures a fast and stable import process for energy storage components.
