Which UN38.3 documents should a battery buyer receive, and how do you check them?

Direct answer: Ask for the UN38.3 test summary, not just a statement. It should name the manufacturer, the test laboratory, a unique report number and date, the exact battery model with its mass and Wh rating, the tests and pass/fail results, the UN Manual edition used and a signatory. Check each item against your order.

UN38.3 refers to sub-section 38.3 of the UN Manual of Tests and Criteria, the set of tests lithium cells and batteries must pass for transport. Under the US hazardous materials rules (49 CFR 173.185), each manufacturer and subsequent distributor must make a test summary available for lithium cells and batteries made on or after 1 January 2008. The requirement also applies in air and sea transport.

A valid summary uses a standard list of elements, as PHMSA’s guide describes: manufacturer name and contacts; the test laboratory’s name and contacts; a unique test report number; the report date; a description of the cell or battery (lithium-ion or metal, mass, watt-hour rating or lithium content, model number); the list of tests with pass/fail; a reference to assembled-battery testing where applicable; the UN Manual edition and amendments used; and a signature with name and title. There is no set form, so layouts differ.

Check it against your order. Does the model number match the one on the label and the invoice, for example the 48V 100Ah golf cart pack, the 12V 100Ah pack or the 48V 280Ah forklift pack? Does the Wh rating match the pack’s nominal energy (5.12 kWh, 1.28 kWh and 14.33 kWh on those pages)? Is the report dated, signed and numbered, and does the laboratory exist?

Know the limits of the document. It shows the design passed transport tests. It is not a certificate of safe operation, does not replace IEC 62619 or other product certificates, and says nothing about the cells’ cycle life. A summary for a smaller cell or a different pack configuration does not automatically cover your model, so check whether it names the finished battery or only its cells.

Ask for the summary before shipping and keep it with the shipping papers and asset records. The Redway pages list UN38.3 and UN3480 for these models, but do not say that a summary is published online or exists for each model, so ask Redway per model. If a supplier cannot produce one, treat that as a risk for transport, not a paperwork detail.