Edition and archive note. This historical DGSA address has been reconstructed as an updated resource page. It is not a recovered verbatim copy of the previous article, and the US guide is not presented as an ADR rule or exemption.
Official guide and edition
PHMSA publishes the Lithium Battery Guide for Shippers. Its official page describes an October 2024 update, based on the US regulatory changes of 10 May 2024 (HM-215Q). The guide is organised around shipping scenarios, with different instructions according to battery type, configuration and size.
Open the official PHMSA guide page and its PDF. The download is identified there as Lithium-Battery-Guide-2024.pdf. Check that page for replacements or later editions rather than relying on an undated local copy.
United States scope, not an automatic ADR exemption
The PHMSA resource concerns the US Hazardous Materials Regulations, 49 CFR Parts 171-180, across road, rail, air and water transport. Its supporting website identifies 49 CFR 173.185 as a key provision for lithium battery shipments.
For a shipment involving Spain, use this resource for the US leg where relevant, and review the applicable road, rail, maritime or air requirements separately. This page does not determine a UN number, packing instruction or exemption for an individual consignment.
Battery condition and supporting evidence
PHMSA highlights short circuits, physical damage and thermal runaway as transport risks. It provides separate resources for damaged, defective or recalled batteries, and for batteries going to disposal or recycling. It also directs shippers to manufacturers or suppliers for the relevant UN 38.3 test-summary information.
PHMSA lithium battery transport resources bring those topics together. A used battery should not simply be treated as identical to a new, undamaged product without reviewing its condition.
Information to prepare for a DGSA review
To help us assess your proposed operation, prepare the battery chemistry and model, rated energy or lithium content as applicable, quantity and mass, condition, whether it travels alone or with equipment, available test documentation, packaging proposal and all transport modes on the route.
This is our suggested information checklist, not a replacement for the guide's decision process or a declaration of compliance. See DGSA advisory services and dangerous goods training for support with your actual activities.
Discuss your operation with DGSA
Send us the information relevant to your proposed shipment or training needs. Our review will distinguish the source publication from the rules applicable to your operation.