2026 Battery Import Customs Clearance: Pain Points and Solutions for Southeast Asian,Japanese and South Korean Markets

In 2026,China’s new energy vehicle sales will exceed 12 million units,and the installed energy storage capacity will increase by 45% year on year,driving a surge in import demand for lithium iron phosphate batteries and ternary lithium batteries.Power batteries from Vietnam and Thailand in Southeast Asia,and high-end energy storage batteries from Japan and South Korea have become the main import categories.However,as Class 9 miscellaneous dangerous goods under the Classification and Code of Dangerous Goods (GB 6944-2012),battery import customs clearance often encounters risks due to compliance details: some enterprises have goods detained by customs due to expired UN38.3 test reports,some fail to declare because the dangerous packaging certificate does not mark the UN3480 number,and even some energy storage batteries are returned by commodity inspection due to excessive heavy metal content.

Core Value of Zhongshen in Battery Import Agency

Zhongshen has been engaged in foreign trade agency for over 20 years,providing import services for more than 300 battery enterprises in Shanghai and surrounding areas.In response to the Detailed Rules for Lithium Battery Import Supervision updated by the General Administration of Customs in 2026,the company has established an exclusive battery import compliance database,connected to the pre-declaration channels of Shanghai Yangshan Port and Waigaoqiao Port,and can predict document risks in advance.At the same time,it has established a rapid sampling mechanism with the commodity inspection authority,reducing the average duration of battery import from port arrival to release to less than 72 hours,40% faster than the industry average.

Full Process Analysis and Compliance Control of Battery Import Customs Clearance

Step 1: Document Pre-examination – Avoid Pre-compliance Risks

Battery import documents need to complete pre-examination 10 working days in advance,among which three types of documents are key to customs clearance: UN38.3 test report (for lithium battery transportation safety),dangerous packaging certificate (for packaging performance),and Chinese and English MSDS (for dangerous characteristic notification).According to the 2026 new regulations,the validity period of UN38.3 reports has been shortened from 3 years to 2 years,and specific battery models (such as "50Ah ternary lithium battery") must be marked,"general model" cannot be used as a substitute.

Ms.Yu,a document specialist at Zhongshen,once handled such a case: Ms.Cui from an energy storage enterprise imported 1,200 cases of ternary lithium batteries from South Korea,and the validity period of the submitted UN38.3 report was until February 2026,which had expired for 1 month when the goods arrived at the port.Ms.Yu immediately coordinated with the South Korean supplier to reissue the latest report,and applied for "tolerance pre-examination" from the customs,finally completing the document update before the goods arrived at the port,avoiding port detention fees.

• BatteryUN38.3testreport(withinvalidityperiod,matchingwithbatterymodel)
• DangerousGoodsPackagingPerformanceAppraisalCertificate(dangerouspackagingcertificate,markedwithUN3480/3481)
• ChineseandEnglishMSDS(complyingwiththe9threvisededitionofGHS2026)
• Certificateoforigin(thetariffrateofternarylithiumbatteriesisreducedfrom8%to6%undertheChina-KoreaFreeTradeAgreement)
• Importbatteryrecordform(needstobeprocessed3workingdaysinadvanceatShanghaiport)

Step 2: Port Customs Declaration – Accurately Match Customs Supervision Requirements

In 2026,Shanghai Customs upgraded the manifest declaration requirements for battery imports: it is necessary to clearly mark "lithium battery" and "dangerous goods" in the "goods description" column,and fill in the UN number (3480 for lithium-ion batteries,3481 for lithium-ion battery packs).If the manifest information is incorrect,the goods will be directly detained in the customs supervision warehouse,resulting in port detention fees of 50 CNY per ton per day.

Mr.Pu,customs declaration manager of Zhongshen,once assisted Mr.Bao’s enterprise to solve the manifest problem: the enterprise imported lithium iron phosphate batteries from Vietnam,and the manifest was mistakenly filled in as "ordinary battery".Mr.Pu immediately contacted the shipping company to modify the manifest,submitted a "situation statement" to the customs and applied for priority inspection,finally completing the release within 24 hours,avoiding 3 days of port detention fees (about 12,000 CNY).

Step 3: Commodity Inspection and Quarantine – Focus on Battery Safety and Environmental Compliance

In 2026,the supervision focus of the commodity inspection authority on battery imports has shifted to "environmental protection indicators": the lead content of small lithium batteries shall be ≤80ppm,and the cadmium content shall be ≤3ppm (20% stricter than the 2025 standard); energy storage batteries need to provide additional fire test reports (complying with UL 9540 standard).If the sampling test fails,the whole batch of goods will be returned or destroyed.

The commodity inspection specialist of Zhongshen connects to the "pre-inspection channel" of the commodity inspection authority,and can arrange sampling 3 working days in advance.There was a case where Mr.Ai’s enterprise imported energy storage batteries from Japan.Before sampling,the commodity inspection specialist found that the fire test reports of 2 batches were not stamped with the official seal of the laboratory,and immediately reminded the enterprise to supplement the seal,avoiding the return of the whole batch of goods (loss of about 200,000 CNY).

Practical Case: Import Customs Clearance Speed-up Case of an Energy Storage Enterprise

In March 2026,a Shanghai energy storage technology company (referred to as Company A) imported 1,200 cases of ternary lithium batteries from South Korea for a domestic photovoltaic energy storage project,originally planned to be released within 5 days after arriving at the port on April 15.However,Ms.Cui of Company A contacted Zhongshen only on March 28,when there were only 18 working days left before the port arrival,and there were 3 problems:

• ThevalidityperiodofUN38.3reportsfor3modelsexpiredinFebruary2026;
• ThedangerouspackagingcertificatedidnotmarktheUN3481number;
• TheimportbatteryrecordformforShanghaiportwasnotprocessed.

Zhongshen’s solutions:

• Ms.YufromthedocumentteamcoordinatedwiththeSouthKoreansuppliertoreissuethelatestUN38.3reportwithin3workingdays;
• Mr.Pufromthecustomsdeclarationteamcontactedthecommodityinspectionauthoritytomodifythenumberonthedangerouspackagingcertificate,andprocessedtherecordformatthesametime(completedwithin2workingdays);
• Thecommodityinspectionteamconnectedtothepre-inspectionchannel,andcompletedsamplingandtestingwithin48hoursafterthegoodsarrivedattheport;

Finally,the goods arrived at the port on April 15 and were released on April 18,2 days ahead of the original plan,avoiding project delay losses (about 50,000 CNY).

Summary: Core Value of Zhongshen Agency Services

In 2026,the competition in the battery import market intensifies,and compliance requirements become stricter.With more than 20 years of industry accumulation,Zhongshen controls risks throughout the whole process from document pre-examination to port release: it can not only help enterprises avoid common problems such as expired UN38.3 reports and non-conforming dangerous packaging,but also reduce import costs through FTA tariff rates (for example,under the China-Korea Free Trade Agreement,it can help enterprises save about 15% of tariffs every year),while shortening customs clearance time by more than 30% and reducing additional expenses such as storage and port detention fees.For battery enterprises,choosing a professional agency is not only "customs declaration service",but also a "compliance risk management partner".