Standard · Transport

UN 38.3 transport test

Transport tests T.1–T.8 for lithium cells and batteries. Map spec sections to test groups cleanly, and do not miss OEM hardenings.

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T.1–T.8
Cell vs pack
Spec → plan

UN 38.3 · T.1–T.86 of 8 covered

T.1Altitude simulationOK
T.2Thermal cyclingOK
T.3VibrationOK
T.4Shock · OEM profileGap
T.5External short circuitOK
T.6Impact / crushOK
T.7Overcharge · acceptanceGap
T.8Forced dischargeOK

Excerpt · demo data

Context

What UN 38.3 means in the test plan

UN 38.3 is the transport test series for lithium cells and batteries in the UN Manual of Tests and Criteria. Without passed, documented tests the products usually cannot move as dangerous goods by road, rail, sea or air.

For validation teams UN 38.3 is rarely the only standard. It sits next to IEC 62619, OEM stress profiles and often the EU Battery Regulation. The plan has to separate cell, module and pack: the same spec paragraph often does not mean the same DUT level.

The eight test groups

Group	Scope	Typical DUT level	Typical planning trap
T.1	Altitude / low pressure	Cell and pack	SoC and packaging not carried through
T.2	Thermal cycling	Cell and pack	OEM asks for harsher profiles without acceptance
T.3	Vibration	Cell and pack	Axes, fixturing and sample state unclear
T.4	Shock	Cell and pack	OEM pulse instead of the UN profile, no evidence path
T.5	External short circuit	Cell and pack	Conditions and protective devices unspecified
T.6	Impact / crush	Primarily cell	Pack applicability not settled
T.7	Overcharge	Primarily pack	BMS dependence without acceptance criteria
T.8	Forced discharge	Primarily cell	Chemistry and construction overlooked

Note: This table is a planning grid, not a substitute for the standard. Profiles, sample counts and pass/fail live in the spec, the UN Manual and OEM addenda.

Cite: cevelar.com/en/standards/un-383#t1-t8

How Cevelar puts UN 38.3 on the chain

Requirements are extracted from the spec, mapped to T.1–T.8 plus OEM deltas, and gaps are flagged. The output is an auditable plan with sequence and traceability the lab can book. See test plan from an OEM spec sheet.

Impact

Transport evidence needs a matrix.

T.1–T.8 Eight groups, applicability by product

Cell ≠ Pack Wrong scope shifts the whole series

T.1–T.2 · Environment Altitude/pressure and thermal cycling. Often tied to SoC, packaging and harder OEM profiles.
T.3–T.4 · Mechanical Vibration and shock. Check axes, amplitude, mounting and sample state in the spec.
T.5–T.6 · Short circuit / impact Document short-circuit conditions. Impact/crush: clarify cell vs battery applicability.
T.7–T.8 · Charge abuse Overcharge often linked to BMS. Forced discharge especially relevant for certain chemistries.

Distinction

Cell vs pack

Typical spec trap

Label“Battery” means cell module
OEM add-onHarder cycles without acceptance
SamplesCounts/retest contradict chapters

Clean plan

ScopeCell / module / pack locked
MappingT.1–T.8 + OEM deltas
OutputTraceability, sequence, cost

Upload Upload the OEM specification as PDF, DOCX or XLSX.
Mapping Map requirements to T.1–T.8 and OEM deltas, flag gaps.
Output Estimate sequence and cost, export full traceability.

For heads of validation

Transport tests without traceability stay risk.

UN 38.3 often sits beside IEC 62619 and OEM stress profiles. Cevelar keeps Spec → test group → evidence together, EU-hosted.

Battery passport

UN 38.3 as conformity evidence from February 2027

A passed T.1–T.8 series is transport evidence. From 18 February 2027, EV, LMT and industrial batteries above 2 kWh also need that evidence behind the battery passport. The passport does not replace the test report. It cites it.

Conformity with Regulation (EU) 2023/1542 is the rulebook. The passport is the data layer. UN 38.3 fills the transport fields only when cell, module and pack are locked and the report is traceable to the spec. Battery passport software can store the field. It cannot invent the report.

The German guide maps each field to its evidence: Batteriepass-Anforderungen 2027. English version: battery passport requirements 2027. Regulation context: EU Battery Regulation 2023/1542.

Lab

Which measurements a UN 38.3 transport test needs

UN 38.3 names no instrument brands. The transport test defines the test; the accredited lab brings the rig. The plan still has to say what is measured and what passes.

T.1 Vacuum chamber, with pressure and dwell.
T.2 Temperature chamber for the cycle, plus temperature on the sample.
T.3 and T.4 Shaker for vibration and shock, with the profile recorded.
T.5 Short-circuit path with a defined resistance, voltage and temperature.
T.6 Impact or crush fixture, depending on cell construction.
T.7 and T.8 Source or load for overcharge and forced discharge, with voltage and temperature logging.

Without state of charge, sample condition and an acceptance criterion, the instrument is interchangeable and the evidence is not. The split from in-use safety sits on IEC 62619. Substance limits in the EU Battery Regulation 2023/1542 are a different statement: an analysis or a supplier declaration, not a transport test.

FAQ

UN 38.3 questions

What has to be settled before the lab is booked.

What is UN 38.3?

UN 38.3 describes transport tests for lithium cells and batteries under the UN Manual of Tests and Criteria. Without passed tests the products usually cannot be transported safely.

Which test groups does UN 38.3 cover?

The series covers T.1 altitude/pressure, T.2 thermal cycling, T.3 vibration, T.4 shock, T.5 short circuit, T.6 impact/crush, T.7 overcharge and T.8 forced discharge. Applicability depends on cell or battery.

Cell or pack: what has to be tested?

The spec must lock the DUT level. “Battery” often means a cell module. T.6 and T.7 do not apply automatically at every level. The wrong boundary shifts the whole series.

How do I build a UN 38.3 test plan from a spec?

Extract requirements, map them to T.1–T.8 and OEM addenda, flag gaps (samples, acceptance), then estimate sequence and cost. Cevelar keeps spec, test group and evidence together, EU-hosted.

Which instruments does a UN 38.3 transport test need?

The standard names no brands. T.1 needs a vacuum chamber, T.2 a temperature chamber, T.3 and T.4 a shaker, T.5 a short-circuit path with resistance and temperature, T.6 an impact or crush fixture, T.7 and T.8 a source or load with voltage and temperature logging. The plan must lock state of charge, sample condition and acceptance. The lab provides the rig.

Contact

Build the UN 38.3 plan from a spec.

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