What Is a UN 38.3 Test Summary?

The UN Manual of Tests and Criteria contains the design-type testing framework used for applicable lithium cells and batteries offered for transport. The tests are intended to examine how a cell or battery design behaves under conditions associated with transport and specified abuse scenarios.

For classification, packing, marking and mode-specific obligations beyond the test-summary question, use the separate lithium battery shipping regulations guide.

The test summary is the supply-chain record of specified facts about that testing. It helps a buyer, shipper, carrier or regulator connect a physical cell, battery or product with the tested design and the underlying test report.

That distinction matters:

• The test summary presents required identification and result information in a concise form.
• The full test report contains more detailed laboratory records and test evidence.
• The shipment review determines how the actual goods must be classified, packed, documented and accepted for the selected route.

Suppliers sometimes use expressions such as “UN 38.3 certificate,” “UN38.3 report” or “battery certificate” loosely. Do not decide from the filename. Open the document and determine whether it is the paragraph 38.3.5 test summary, the underlying laboratory report, another declaration, or a different certificate.

Passing the design-type tests is an important transport requirement, but the summary alone does not establish the correct UN number or packing instruction. It also does not prove that the packaging is suitable, the battery is undamaged, the documents are complete, or a particular carrier will accept the shipment.

Who Must Make the Test Summary Available, and When?

The IATA 2026 battery guidance states that, except for its specified treatment of button cells installed in equipment, manufacturers and subsequent distributors of applicable cells, batteries and battery-powered equipment must make the test summary available. The responsibility is not transferred to a freight forwarder merely because the forwarder asks for the document.

“Make available” does not normally mean that a paper copy must travel with every consignment. According to the same guidance, the information may be supplied on paper or made accessible electronically, including through a website, QR code or URL associated with the battery, packaging or transport documentation. Any party in the supply chain may request it.

For air cargo, IATA does not support making a paper test summary a routine attachment to every shipment unless a State or operator requires it. In practice, the shipper should still obtain the correct summary early and keep it readily accessible. A carrier, consolidator, regulator, destination partner or customer may request it during review.

Availability is not acceptance. Airlines may impose requirements beyond the general regulations and are not obliged to carry every product. Ocean carriers, terminals, road operators, rail operators and courier networks also apply their own acceptance processes. The current route and operating parties must therefore be checked before tendering cargo.

What Information Should a UN 38.3 Test Summary Contain?

Paragraph 38.3.5 identifies ten information groups. The IATA 2026 guidance reproduces them in a practical table and provides example layouts. There is no mandated visual template, so two valid summaries can look different. What matters is whether the required information is present and traceable.

A logo, laboratory stamp or large word such as “PASS” does not replace these fields. Conversely, the lack of a decorative certificate layout does not make a summary invalid. Review its contents and relationship to the actual design.

How Do You Match the Summary to the Battery Being Shipped?

The most important review is not whether a PDF contains the words “UN 38.3.” It is whether the document can be connected to the exact battery or product in the shipment.

Match the manufacturer and model identifiers

Start with the product and battery labels. Record the product manufacturer and model, battery manufacturer and model, chemistry, nominal voltage, rated capacity and Watt-hour rating. Then compare those facts with the test summary, technical specification, commercial invoice, packing list and any other supporting product information.

Look carefully at prefixes, suffixes and variant codes. A model family may include different capacities, voltages, cell arrangements or enclosures. A partial model match is a question to resolve, not enough evidence to declare the summary applicable.

Brand ownership and manufacturing identity can also differ. A consumer brand, contract manufacturer and battery-cell supplier may all appear in the document set. The files need a coherent relationship, but the reviewer should ask for clarification rather than assume that different company names automatically mean the summary is wrong.

Compare the Watt-hour rating

For a rechargeable lithium-ion battery, a basic reasonableness check is:

Watt-hours (Wh) = nominal voltage (V) × rated capacity (Ah)

If capacity is shown in milliampere-hours, divide the mAh value by 1,000 before multiplying. For example, a battery marked 12.8 V and 100 Ah has a calculated rating of 1,280 Wh.

This calculation can reveal a transcription or document mismatch. It does not replace the manufacturer's technical data, laboratory evidence or a qualified classification decision. Some labels use rounded values, and a complete product may contain several cells, modules or battery packs. Resolve the architecture before drawing a conclusion.

Identify whether the evidence covers a cell, battery, pack or product

A cell, a battery assembled from cells, a module, a large battery pack and equipment containing a battery are not interchangeable descriptions. Evidence for a component cell should not automatically be treated as evidence for every assembled battery built from that cell.

Ask what design was tested and what is being offered for transport. Compare the tested model, physical description, mass, energy rating, protective features and configuration with the finished battery or product.

For a detailed explanation of standalone batteries, batteries packed with equipment and batteries contained in equipment, see UN 3480 vs UN 3481.

Check summaries that cover multiple models

The IATA guidance allows one summary to cover multiple batteries, manufacturers or products when all required information is included. It can also list multiple test houses.

The practical question is whether the shipped model is clearly identified and can be matched to the correct report number, report date, technical description and other required information. A long product-family list is not useful if the actual variant cannot be located or its data cannot be distinguished.

Verify traceability without pretending to authenticate the laboratory

Check that the laboratory details, test-report number, date, UN Manual edition and responsible person's name/title are present. If the source is unclear, ask the manufacturer or distributor for the original file or official download location.

A document reviewer can identify missing or inconsistent information. Authenticating a laboratory, determining accreditation, validating the underlying test work or deciding whether a design change requires retesting may require the manufacturer, laboratory, competent authority or another qualified party.

Test Summary, Full Test Report, SDS and Shipping Documents: What Is the Difference?

Several battery documents may refer to the same model, but they answer different questions.

IATA's dangerous-goods guidance warns that many SDS documents do not provide accurate transport classification. Its 2026 battery guidance also states that an SDS is not a transport document and is not a substitute for the test summary.

An operator or logistics provider may still request an SDS or product data sheet as supporting information. If so, the manufacturer, model, chemistry and ratings should remain consistent across the SDS, test summary, product specification, invoice and packing list.

Does a UN 38.3 Test Summary Expire?

The IATA 2026 public FAQ does not assign a fixed expiry period to the test summary. It states that the summary remains valid if the lithium or sodium-ion cell or battery type has not changed in a way that requires renewed testing.

This does not mean that the date can be ignored. Use it together with the report number, tested model, product history and current design. Ask for clarification when:

• the current battery rating or voltage differs materially from the tested design;
• cell chemistry, materials, protective devices, software, safety design, cell count or connection method changed;
• the product was repaired, refurbished or remanufactured using different parts or specifications;
• the manufacturer or model naming changed and the relationship is not documented;
• the report is unreadable or its referenced edition cannot be identified;
• a carrier, regulator, customer or contract requires additional or updated evidence.

The 2026 IATA guidance summarizes design changes that can create a new type requiring testing. For rechargeable cells and batteries, examples include a change of more than 20% in Watt-hours or an increase of more than 20% in voltage, as well as any change that could materially affect the test results. A qualified party should assess the actual design change; a freight quote should not be used as that determination.

What About Equipment, Multiple Batteries and Special Cases?

Batteries shipped alone or with equipment

The test-summary question applies across lithium battery configurations, but the shipment classification and operating rules differ. A standalone lithium-ion battery may start from UN 3480, while a lithium-ion battery packed with or contained in equipment may start from UN 3481. Lithium-metal batteries use different entries. The actual chemistry and configuration must be confirmed.

The summary does not choose the UN number for the shipment. It helps establish the identity and testing record of the cell or battery design used in that classification decision.

Equipment containing button cells

The IATA 2026 guidance contains a test-summary exception for equipment, including circuit boards, containing only button cells. Do not extend that air-guidance statement to a different product, transport mode or jurisdiction without checking the applicable current rule.

Vehicles and large battery systems

Battery-powered vehicles, EV packs and energy-storage systems can involve additional classification, packaging, handling, lifting, securing and routing questions. The presence of a test summary does not decide whether a complete item is classified as a battery, equipment, vehicle or cargo transport unit.

Use the dedicated EV battery logistics guide or BESS and energy-storage container guide for the wider operating context.

Sodium-ion batteries

IATA's 2026 guidance also addresses test summaries for sodium-ion batteries with organic electrolyte under the current air framework. Do not relabel a sodium-ion product as lithium-ion or assume every sodium chemistry uses the same entry. See the separate sodium-ion battery shipping guide for the broader topic.

A Practical Document-Check Workflow Before Shipping from China

1. Identify the exact product and battery

Collect the manufacturer and model of both the product and battery. Record the chemistry, nominal voltage, rated capacity, Wh rating or lithium content, battery count, configuration and condition. Note whether the battery ships alone, beside the equipment or installed inside it.

2. Obtain the original test summary source

Ask the manufacturer or subsequent distributor for the summary that covers the actual model. Keep the original file, website address or QR-code destination. Avoid relying only on a cropped screenshot, edited table or an unrelated model supplied in a sales chat.

The U.S. Pipeline and Hazardous Materials Safety Administration also provides a plain-language test-summary resource and sample layout. Its implementation details are U.S.-specific, but the example can help readers recognize the required information groups.

3. Cross-check the identifiers and ratings

Compare the product label, battery label, specification, test summary, invoice, packing list and available SDS or product data. Record discrepancies instead of silently correcting one document to match another.

Confirm that the shipped model appears in the summary and that the chemistry, mass, Wh rating or lithium content and physical description are reasonably consistent. Check the report number, date, Manual edition and responsible-person field.

4. Classify the actual shipment

Identify the relevant battery configuration and condition. New tested batteries, prototypes, damaged batteries, defective batteries, recalled products, waste and batteries for recycling can follow different pathways.

Then check the current rules for the selected mode. Air, sea, road, rail and courier networks do not use one interchangeable packing and acceptance checklist. For the broader process, read How to Ship Lithium-Ion Batteries Internationally.

5. Request a route and operator review

Provide the document set together with the package count, gross and net weights, dimensions, packing photographs, China pickup point, destination, cargo-ready date and preferred mode. A carrier review based on the real cargo is more useful than asking whether “lithium batteries” can ship in general.

For air-specific preparation, see battery air-shipping requirements. For ocean planning, see the battery sea-freight guide.

Common Problems to Resolve Before Booking

The model number does not match

The battery label may show a suffix or capacity that does not appear in the summary. Ask the supplier to document whether the model is covered. Do not remove the suffix from another shipping document merely to create a visual match.

The summary covers a cell, but the cargo is a battery pack

Cell evidence can be relevant to the battery design, but it should not automatically be treated as the complete test-summary evidence for a materially different assembled pack. Identify what was tested and what is being shipped.

The technical ratings differ among files

Different voltage, capacity, Wh, mass or chemistry information can prevent a clean match. Use the basic Wh calculation as a reasonableness check, then obtain corrected or explanatory manufacturer information.

Required fields are missing or unreadable

A document may omit laboratory contact details, report identifiers, the test date, model numbers, the cited Manual edition or the responsible person's title. An unreadable scan can create the same practical problem as a missing field.

One generic document is used for every variant

A single summary can cover multiple models, but each applicable product still needs adequate identification and required information. Confirm that the exact shipped model is genuinely included.

An SDS is submitted as the only proof

An SDS/MSDS is not the UN 38.3 test summary. Ask for the applicable summary and keep the SDS as supporting information only when it is relevant to the operating review.

The shipper assumes that the summary guarantees acceptance

Design testing is one layer. Classification, condition, packing, marks, labels, declarations, route restrictions, State variations and operator policy remain separate. A carrier can still decline the cargo or ask for additional evidence.