Testing Lab of Power Supply/ IT / AV Products

Successfully exporting power and battery products internationally demands more than just a quality product — it requires navigating the full document ecosystem that international carriers and customs authorities require. The UN38.3 transport report sits at the center of that ecosystem, alongside the dangerous goods packaging certificate, MSDS, and transport condition appraisals. This guide walks through the complete process — from pre-application preparation to obtaining all required export documents — so manufacturers can move from testing to shipment with confidence.

1. Pre-Application Requirements

Before initiating a UN38.3 application, manufacturers should confirm three key items:

Confirm product scope　Determine whether the product is a lithium-ion battery, lithium-metal battery, device containing lithium batteries, or another chemical battery type (Ni-MH, Ni-Cd, lead-acid, etc.). Different battery chemistries involve different test requirements.

Define specifications　Based on the battery's cell model, capacity, voltage, dimensions, and other parameters, confirm the specific test items and parameters with the laboratory before submitting the application.

Identify transport mode　Determine whether shipping will be by air, sea, or land — each mode carries different supporting document requirements. This should be planned from the application stage to avoid rework later.

2. The Six-Step UN38.3 Certification Process

The UN38.3 report acquisition process has been highly standardized, comprising six steps:

Step 1 — Application Form　The manufacturer provides battery basic information: product name, model, cell type, capacity, voltage, dimensions, weight, and more. The laboratory generates the formal test application form.

Step 2 — Quotation and Agreement　The laboratory determines applicable test standards, timeline, and fees based on the submitted documentation. Both parties confirm the quote, sign the application form and service agreement, and the manufacturer pays the full project fee.

Step 3 — Sample Submission and Testing　The manufacturer ships battery samples to the laboratory, which conducts all eight UN38.3 tests (altitude simulation, thermal test, vibration, shock, external short circuit, impact/crush, overcharge, forced discharge). Testing timelines typically range from 2 to 6 weeks depending on product complexity.

Step 4 — Report Issuance　The laboratory issues the UN38.3 test report, which must be signed by a third-party institution with CNAS and CMA accreditation. The report must state the test basis, conditions, pass/fail criteria, and laboratory details.

Step 5 — Supporting Documents　Using the UN38.3 report, the manufacturer applies to the airline or shipping company for an air or sea transport condition appraisal, and to the local customs authority for the dangerous goods packaging certificate. The MSDS chemical safety data sheet is prepared simultaneously as needed.

Step 6 — Document Review and Booking　With all documents in hand, the manufacturer submits the UN38.3 report, MSDS, dangerous goods packaging certificate, and other required documents to the airline or freight forwarder for booking review. Shipment can only be arranged after review is approved.

3. Documents Required for UN38.3 Application

Manufacturers need to prepare the following core materials during the UN38.3 application process:

• UN38.3 Application Form — containing battery basic information, testing requirements, and applicant details
• Letter of Authorization and Lithium Battery Transport Declaration — authorizing the laboratory to conduct testing on behalf of the applicant
• Battery Specification Sheet — including cell model, capacity, voltage, dimensions, weight, protection circuit information, and other complete parameters
• Accompanying Documentation — lithium battery transport declaration and user manual
• Battery Samples — shipped to the laboratory in the required quantity and condition
• MSDS — Material Safety Data Sheet; Section 14 must clearly state transport classification and emergency response measures

4. Air Export Document Checklist

Battery air export involves mandatory review by airlines and airport cargo acceptance departments. Below is the complete document checklist:

Airlines typically require submission of the dangerous goods packaging certificate, MSDS, and UN38.3 report 72 hours in advance for booking review. Upon approval, packages must display the Class 9 hazard label and UN3480/UN3481 identifier, with a net weight limit of 35kg per package. Packages exceeding 5kg require an additional "Cargo Aircraft Only" label.

5. Packaging Requirements at a Glance

Beyond document compliance, battery packaging itself must meet strict physical safety requirements:

Inner packaging　Each lithium battery must be sealed in a blister tray or anti-static bag; electrodes must be insulated with tape. Batteries installed in devices must be secured to prevent movement and to ensure they cannot accidentally activate during transport.

Outer packaging　UN-approved packaging boxes (such as UN 4G/X55/S) are required, with Class 9 hazard labels affixed. Container loads must be secured with corner protection on all four sides of the pallet.

Drop test　Each package must withstand a 1.2-meter free fall in any orientation without damaging the enclosed batteries or causing any battery to fall out of the package. When batteries are shipped standalone, the gross weight of each package must not exceed 10kg.

6. Common Practical Questions

This article was generated with AI assistance. Content is for reference only and does not constitute any certification commitment or legal advice. Please refer to the latest official regulations.

Contact: net01@gtggroup.com