# Lithium Battery Guide for Shippers

- **operation:** document
- **citation:** PHMSA Guidance, Lithium Battery Guide for Shippers
- **title:** Lithium Battery Guide for Shippers
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2024-11-21
- **effective on:** 2024-11-21
- **summary:** Lithium Battery Guide for Shippers Document Lithium-Battery-Guide-2024.pdf (12.27 MB) Updated October 2024! This compliance resource was prepared to assist shippers to safely package lithium cells and batteries for transport by all modes according to the latest (May 10, 2024; HM-215Q) regulatory requirements. This publication directs readers to scenario-based shipping guides that outline the requirements to ship pack
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- **app url:** https://regulus.evalyn.ai/document/phmsa-guidance-lithium-battery-guide-shippers-687f8079
- **source url:** https://www.phmsa.dot.gov/regulatory-compliance/phmsa-guidance/lithium-battery-guide-shippers
**body:**

Lithium Battery Guide for Shippers

Document

 Lithium-Battery-Guide-2024.pdf (12.27 MB)

        Updated October 2024! This compliance resource was prepared to assist shippers to safely package lithium cells and batteries for transport by all modes according to the latest (May 10, 2024; HM-215Q) regulatory requirements. This publication directs readers to scenario-based shipping guides that outline the requirements to ship packages of lithium cells and batteries in various configurations. Each distinct shipping guide in this document refers to the regulatory requirements for a specific lithium cell/battery type, configuration, or size.

          Issued Date: Thursday, November 21, 2024

<<<PAGE 1>>>

LITHIUM BATTERY GUIDE FOR SHIPPERS
A Compliance Tool for All Modes of Transportation
Revised October 2024
WWW.PHMSA.DOT.GOV
PHMSA | PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION
1

<<<PAGE 2>>>

The contents of this guide do not have the force and effect of law and are not meant to bind the public in
any way. This guide is intended only to provide information to the public regarding existing requirements
under the Hazardous Materials Regulations.
INTRODUCTION
This compliance resource was prepared to assist a shipper to safely package lithium cells and batteries for transport by
all modes of transportation according to the latest regulatory requirements. This guide provides scenario-based situations
that outline the applicable requirements that a shipper must follow to ship packages of lithium cells and batteries in various
configurations. Each distinct shipping guide in this document refers to the regulatory requirements for a specific lithium cell/
battery type, configuration, and size. In this way, a shipper will easily find the applicable provisions that they must follow
depending on the scenario they encounter as a shipper.
Please note that these shipping guides are based on the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) and
can be used as a compliance tool to help outline applicable scenario-based regulatory requirements; this document is not
a substitute for the HMR. While every effort has been made to provide a simplified compliance resource consistent with the
HMR, if there is any instance in which this document is inconsistent with the HMR, then the HMR requirements supersede
this guide. The regulations themselves are the final authority for proper shipping procedures.
The HMR includes provisions for the classification, packaging, hazard communication (e.g., package marking, labeling,
shipping papers), stowage, and handling of all hazardous materials. The purpose of these regulations is to protect the
safety of people, property, and the environment when hazardous materials such as lithium batteries and battery-powered
devices are shipped. If the applicable minimum regulatory requirements are not followed, lithium cell or battery shipments
may be more likely to contribute to fires, injuries, or other incidents during transport.
Whether shipping a single battery, a palletized load of batteries, or a battery-powered device, the safety of the package,
and those who handle it along its journey, depends on compliance with the HMR. Failure to comply with the applicable
regulations may result in fines or even criminal prosecution.
For any questions about regulatory requirements, please contact our Hazardous Materials Information Center at 1-800-
467-4922/202-366-4488 or infocntr@dot.gov. The Information Center can answer any regulatory questions and provide
additional compliance resources.
Effective May 10, 2024, the latest rulemaking (HM-215Q, published April 11, 2024) extends the
requirement that lithium ion batteries must be marked with the Watt-hour rating on the outside
case to include batteries larger than 100 Wh, revises the test summary requirement, specifies
quantity limits for cells and batteries packed with equipment, and removes exceptions for small
lithium cells and batteries shipped by air (when not packed with or contained in equipment).
In addition, HM-215Q removes the telephone number requirement from the lithium battery
mark, with a phaseout date of December 31, 2026. As such, this guide now includes footnotes
specifying the phaseout date in each instance of the lithium battery mark.
2

<<<PAGE 3>>>

CELL VS. BATTERY
WHY LITHIUM BATTERIES ARE REGULATED IN TRANSPORTATION
Lithium cells and batteries power countless items that support everyday
life, from portable computers, cordless tools, smartphones and watches, to
wheelchairs and motor vehicles. Our society has come to depend on lithium
cells and batteries for an increasingly mobile lifestyle. Today's lithium cells
and batteries are more energy dense than ever, bringing a steadily growing
number of high-powered devices to market. With the increased energy density
comes greater risk and the need to manage it. Shippers play an important role
in reducing this risk and preventing incidents—including fires aboard aircraft or
other transport vehicles.
CELL: A cell is a single encased
electrochemical unit.
BATTERY: A battery is made up
of multiple electrically connected
component cells, such as in a laptop
computer battery.
Note: A battery can also be
comprised of only a single cell, such
as the common AA, C, or a coin cell.
A single cell battery is considered
a “cell” and must be offered for
transportation in accordance with the
requirements for cells.
The risks posed by lithium cells and batteries are generally a function of type,
size, and chemistry. Lithium cells and batteries can present both chemical
(e.g., corrosive or flammable electrolytes) and electrical hazards. Unlike
standard alkaline batteries, most lithium batteries manufactured today contain
a flammable electrolyte and have an incredibly high energy density. They
can overheat and ignite under certain conditions, such as a short circuit,
overcharging, or mechanical damage. Once ignited, lithium cell and battery
fires can be difficult to extinguish. Additional, although infrequent, events can
result in lithium cells and batteries experiencing thermal runaway, a chain
reaction leading to a violent release of stored energy and flammable gas. This
thermal runaway can propagate to other batteries or combustible materials nearby, potentially resulting in large fires with
severe consequences.
The Federal Aviation Administration (FAA) Technical Center issued a series of test reports in 2004, 2006, 2010, and 2014
that characterized the hazards posed by lithium cells and batteries transported as cargo on aircraft and the effectiveness of
certain aircraft fire suppression agents and packaging configurations in mitigating the associated risks. The FAA Technical
Center testing shows that oxygen starvation through depressurization in the case of cargo aircraft, common shipping
containers (e.g., unit load devices), or aircraft fire suppression systems are not effective in containing or suppressing many
potential lithium cell or battery fires.
Lithium cells and batteries can become dangerous and cause fires and electrical shocks if not safely packaged and handled
when transported. Misused, mishandled, modified, improperly packaged, improperly stored, overcharged, damaged, or
defective lithium cells or batteries can short circuit, overheat, and sometimes cause fire. The heat from a single cell in
thermal runaway can propagate from cell to cell and package to package until the entire shipment has been consumed.
Temperatures of lithium cells or batteries in thermal runaway are sufficient to ignite typical fiberboard packaging and
nearby materials.
Always remember that ALL lithium cells and batteries are hazardous materials when being transported, no matter the size
or quantity. However, there may be exceptions from the regulations depending on whether the cells and batteries
meet specific:
•
Size limitations
•
Packaging requirements
•
•
Hazard communication requirements
Additional requirements for air transportation.
PHMSA | PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION
3

<<<PAGE 4>>>

THE HMR, INTERNATIONAL, AND MODAL REQUIREMENTS
This document provides generalized guidance on the requirements for proper packaging and hazard communication of
shipments of lithium cells and batteries and lithium battery-powered equipment by all modes of transportation. Shipments
to, from, or within the United States are subject to the HMR. For international transport, PHMSA authorizes the use of the
International Civil Aviation Organization's Technical Instructions for the Safe Transport of Dangerous Goods by Air (ICAO TI)
and the International Maritime Dangerous Goods Code (IMDG Code) subject to the additional conditions and limitations of the
HMR specified in subpart C of part 171 of the HMR (§§ 171.22-26).
VESSEL TRANSPORTATION
Lithium batteries and battery-powered equipment may be transported within the United States by vessel and by motor
vehicle or rail either before or after being transported by vessel in accordance with the IMDG Code. We recommend that
shippers consult the most recent edition of the IMDG Code, issued by the International Maritime Organization (IMO) for
additional requirements. Publications and regulations issued by IMO can be found at: www.imo.org.
AIR TRANSPORTATION
Lithium batteries and battery-powered equipment may be transported within the United States by aircraft and by motor
vehicle or rail either before or after being transported by aircraft in accordance with the ICAO TI. We recommend that
shippers consult the most recent edition of the ICAO TI for additional requirements, along with any applicable origin/
destination State Variations. State Variations are additional conditions and limitations imposed by the country of origin and
destination. For example, US State Variations contain the additional HMR requirements that apply when shipping to, from, or
within the US by air under the ICAO TI. Publications and regulations issued by ICAO can be found at: www.icao.int.
For both international and domestic shipments, we also recommend checking with the air carrier for any additional
requirements. Many air carriers have supplemental policies and/or limitations with respect to lithium battery shipments. These
requirements can often be found by consulting directly with the air carrier or International Air Transport Association (IATA)
publications. Air carriers, working closely with the FAA, use their Safety Management Systems (SMS) to evaluate their ability
to safely carry lithium batteries and determine safety mitigation strategies. General FAA hazmat resources can be found at
www.faa.gov/hazmat, with specific lithium battery resources at https://www.faa.gov/hazmat/resources/lithium_batteries.
In summary, when shipping batteries for air transportation, shippers should always consult their air carrier or ICAO/IATA
publications for both country-specific and carrier-specific policies/limitations.
4

<<<PAGE 5>>>

LITHIUM BATTERY TYPES
There are many different chemistries of lithium cells and batteries, but for transportation purposes, all lithium cells and
batteries fall into one of two basic types: lithium ion and lithium metal. Both battery types are characterized by a higher energy
density and a longer operating life than alkaline, nickel cadmium, and nickel metal hydride chemistries.
•
Lithium ion, including lithium polymer:
•
•
are generally rechargeable (secondary) batteries
are found in a wide range of electronic devices such as laptop and tablet computers, cellular telephones, hybrid
vehicles, etc.
•
Lithium metal:
•
•
•
are generally non-rechargeable (primary, one-time use)
have a longer life than standard alkaline batteries
are commonly used in hearing aids, wristwatches, smoke detectors, cameras, key fobs, children’s toys, etc.
LITHIUM CELLS AND BATTERY TESTING REQUIREMENTS
Shippers are responsible for ensuring that lithium cells and batteries offered for transportation have passed the design
tests found in the United Nations (UN) Manual of Tests and Criteria, Section 38.3. The UN 38.3 testing accounts for
transportation impacts such as:
•
•
Altitude
External short circuit
•
•
Forced discharge
Impact/crush
•
•
Overcharge
Shock
•
•
Thermal test
Vibration
Effective January 1, 2022, lithium cell and battery manufacturers and subsequent distributors of lithium cells or batteries,
except for button cells installed in equipment (including circuit boards), manufactured on or after January 1, 2008 must
make a lithium battery test summary available to others in the supply chain. The test summary includes a standardized
set of elements that provide traceability and accountability to ensure that lithium cell and battery designs offered
for transport meet UN 38.3 test requirements. We recommend the shipper check with the battery manufacturer or
distributor to determine if a battery design has passed these tests, or obtain, if possible, the test summary. For additional
information on test summaries, refer to PHMSA’s "Lithium Battery Test Summaries (TS)” outreach publication.
Any change or modification to a lithium battery that would lead to a failure of any of the UN 38.3 tests must be
considered a new type and subjected to the required tests. See the UN Manual for the types of changes that may be
considered sufficiently different from a tested type and that may lead to a failure of a lithium battery test result.
See § 173.185(a) for all testing and test summary requirements. Refer to §§ 173.185(d)(1) and (e), respectively, for exceptions
from the testing requirements for lithium cells or batteries shipped for disposal or recycling and for low production runs
and prototype lithium cells or batteries.
PHMSA | PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION
5

<<<PAGE 6>>>

HOW ARE LITHIUM BATTERIES REGULATED?
Lithium cells and batteries are Class 9 (miscellaneous) hazardous materials. There are eight possible descriptions for
lithium cells and batteries, depending on the battery chemistry. These descriptions, or proper shipping names, are found
in the Hazardous Materials Table (HMT) in § 172.101 of the HMR. They are as follows:
•
•
•
•
•
Stand-alone—Package contains only the cells/batteries—no equipment:
•
UN3090, Lithium metal batteries including lithium alloy batteries
•
UN3480, Lithium ion batteries including lithium ion polymer batteries
Packed with—Package contains not only the equipment, but also cells/
batteries that are not installed in the equipment:
•
UN3091, Lithium metal batteries packed with equipment including
lithium alloy batteries
•
UN3481, Lithium ion batteries packed with equipment including lithium
ion polymer batteries
Contained in—Package contains equipment with cells/batteries installed:
•
UN3091, Lithium metal batteries contained in equipment including
lithium alloy batteries
•
UN3481, Lithium ion batteries contained in equipment including lithium
ion polymer batteries
Vehicles—Package or shipment contains a vehicle powered by
lithium batteries:
•
UN3171, Battery-powered vehicle
Cargo Transport Unit—Lithium batteries installed in a cargo transport unit and designed only to provide power external to
the cargo transport unit.
•
UN3536, Lithium batteries installed in cargo transport unit lithium ion batteries or lithium metal batteries
BATTERY SIZE – SMALLER BATTERY THRESHOLDS
What are considered “Vehicles” or
“Equipment” in the HMR?
Vehicles are self-propelled apparatuses
designed to carry one or more persons
or goods. Examples of such vehicles are
electrically-powered cars, motorcycles,
scooters, three- and four-wheeled vehicles
or motorcycles, trucks, locomotives, bicycles
(pedal cycles with an electric motor) and
other vehicles of this type (e.g. self-balancing
vehicles or vehicles not equipped with at least
one seating position), lawn tractors, self-
propelled farming and construction equipment,
boats, aircraft, wheelchairs and other
mobility aids.
Equipment means the device or apparatus for
which the lithium cells or batteries will provide
electrical power for its operation.
It is important to remember that the size of the cell or battery has important implications for shipping requirements. Size refers
not only to physical dimensions and weight, but also the energy capacity of the battery. For lithium ion cells and batteries, size
is measured by Watt-hour (Wh) ratings. For lithium metal cells and batteries, size is measured by lithium content in grams (g).
The Wh rating is often marked on the outside case of the lithium ion cell or battery. Beginning May 10, 2024, the Wh rating
must be marked on the outside case of all lithium ion batteries regardless of size (see § 173.185(a)(5)).
The size of a lithium cell or battery is an important aspect of classification because “smaller” cells and batteries qualify for
certain exceptions from regulatory requirements when packed in certain quantities. For the purposes of DOT regulations, a
“smaller” cell or battery is as follows:
•
Lithium Ion: Cells equal to or less than 20Wh; and batteries equal to or less than 100Wh
•
•
For highway and rail ONLY: Cells not exceeding 60Wh; and batteries not exceeding 300Wh
Lithium Metal: Cells equal to or less than 1g; and batteries equal to or less than 2g
•
For highway and rail ONLY: Cells not exceeding 5g; and batteries not exceeding 25g
Note: For a single cell battery, such as a typical coin cell or standard AA or AAA replacement battery, refer to the size for cells.
Cells and batteries that exceed these “smaller” cell or battery size thresholds must be shipped as fully regulated Class
9 hazardous material. The shipping requirements for these fully regulated cells and batteries are more stringent. The
shipping guides outlined on page 7 and the flowcharts on pages 8 and 9 make the distinction between size thresholds,
when applicable, for shipping purposes.
6

<<<PAGE 7>>>

DISPOSAL OR RECYCLING LITHIUM BATTERY PROVISIONS
FOR MOTOR VEHICLE ONLY
Lithium cells and batteries, including those contained in or packed with
equipment, being shipped for disposal or recycling may qualify for certain
exceptions in § 173.185(d) of the HMR. The following exceptions only apply when
transported by motor vehicle to a permitted storage facility, disposal site, or for
the purposes of recycling:
•
UN 38.3 cell and battery testing
•
UN specification packaging requirements (when packed in a strong
outer packaging)
In addition, when these shipments meet the applicable size, packaging, and
hazard communication conditions for “smaller” cells and batteries in § 173.185(c) of
the HMR, they are also eligible for the “smaller” cells and batteries exceptions.
Please note that all other requirements of the HMR apply, including, but not
limited to, protecting the lithium cells and batteries from short circuiting and from
damage caused by shifting within the outer package. For more details on the
requirements for a specific shipment, use the appropriate shipping guide in
this document.
Many packages
designed to ship lithium
batteries for recycling
are subject to the
terms of a DOT Special
Permit (DOT-SP). When
utilizing packaging
subject to the terms
of a DOT-SP, the exact
instructions of the DOT-
SP provided by the
manufacturer must
be followed.
SHIPPING DAMAGED, DEFECTIVE, OR RECALLED (DDR)
LITHIUM BATTERIES
Lithium cells or batteries that have been damaged or identified by the manufacturer as being defective for safety reasons,
that have the potential of producing a dangerous evolution of heat, fire, or short circuit (e.g., those being returned to the
manufacturer for safety reasons) may only be transported by highway, rail, or vessel. These cells or batteries are strictly
forbidden for transportation by aircraft. Furthermore, they must be packaged according to the provisions of § 173.185(f),
which include:
•
Placing the cell or battery in individual, non-metallic inner packaging that completely encloses the cell or battery
•
Surrounding the inner packaging with cushioning material that is non-combustible, electrically non-conductive, and
absorbent
•
Packaging the inner packaging in Packing Group I performance level packaging. Note that only one inner
packaging may be placed in an outer packaging (i.e., only one cell or battery per package)
•
Marking the outer packaging with an indication that the package contains a damaged/defective battery, in addition
to any other required marks and labels on the package.
Note that there are no exceptions from any HMR requirements (e.g., training, shipping papers, marking, labeling) for
DDR lithium cells or batteries.
Many packages designed to ship damaged, defective, or recalled batteries are
subject to the terms of a DOT Special Permit (DOT-SP). When utilizing packaging
subject to the terms of a DOT-SP, the exact instructions of the DOT-SP provided by
the manufacturer must be followed.
PHMSA | PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION
7

<<<PAGE 8>>>

X979271
NFG01-2013
N: 6l6
PRETA: GB/T 18287-2000
L J: A69TA005H
4: (02)6712-6700
THI: 3.8V ==-1560mAh
0798) 40
ZU12011 - 13427A
Tri
(Changsu) Inc. x27:87
*ag/s SimploTechnology
84: 8Vdc, 1560mAh
S.:g: PP11L1115
YAU
ssembled in China
ф APN: 615-0719
4: 7097
910-1t2
LESYFHF
D8S:487
101
03whr-
741-0119
MFG11/20131
Li-ion Polyme
3.BV=5.45VI
APN: 616-0613
VPN: LIS1491APPCS
WARNING
Authorized Service
Sn
4176%: GB/T 18287-2000
LA 14030.
Provider Only
Potential for fire or
1440mAh
disassemble, puncture,
burning. Do not
crush, heat, or burn.
Auth
Li-ion Polymer Battery
01909901
Potential fo
Provi
3.8V =т: 5.92Whr
APN: 616-0718
16-0805
d in China
37:87
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310mAh
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2013
crush, heat, orb
disassemble, punr
burning. Do
VPN: A69TA006H
Li-ion Polymer B
VPN: A69TA
APN: 616-0
3.8V = 5.92'
Apple South Asle
TIS 2217-2548
(Thailand) Limited
(Thailand)
R4S065

<<<PAGE 9>>>

SHIPPING GUIDES
For the purposes of this document, the ways to describe and configure packages of lithium cells and batteries, including
smaller cells and batteries, are divided between ten distinct, standalone shipping guides. The shipping guides are
numbered Guide 01 - Guide 10.
The flowcharts on pages 10 and 11 provide a process to navigate possible descriptions/packaging configurations. Use the
flowcharts to determine the appropriate shipping guide in this document. Each shipping guide contains information on the
required hazard communication, quantity limits, and packaging. Each shipping guide also contains additional requirements
or restrictions depending on the mode of transport (i.e., highway, rail, aircraft, and vessel).
If viewing this document electronically (i.e., on a computer or device), the guide number icons below are hyperlinked to the
corresponding shipping guide for quicker navigation through the document.
THE SHIPPING GUIDE NUMBERS ARE AS FOLLOWS:
GUIDE
01
UN3480 LITHIUM ION BATTERIES (FULLY REGULATED CELLS AND BATTERIES)
P. 12
GUIDE
02
UN3480 LITHIUM ION BATTERIES (SMALLER CELLS AND BATTERIES)
P. 14
GUIDE
03
UN3481 LITHIUM ION BATTERIES PACKED WITH OR CONTAINED IN EQUIPMENT (FULLY REGULATED CELLS AND BATTERIES).
P. 17
GUIDE
04
UN3481 LITHIUM ION BATTERIES PACKED WITH OR CONTAINED IN EQUIPMENT (SMALLER CELLS AND BATTERIES)
P. 20
GUIDE
05
UN3090 LITHIUM METAL BATTERIES (FULLY REGULATED CELLS AND BATTERIES)
P. 23
GUIDE
06
UN3090 LITHIUM METAL BATTERIES (SMALLER CELLS AND BATTERIES)
P. 25
GUIDE
07
UN3091 LITHIUM METAL BATTERIES PACKED WITH OR CONTAINED IN EQUIPMENT (FULLY REGULATED CELLS AND BATTERIES)
P. 28
GUIDE
08
UN3091 LITHIUM METAL BATTERIES PACKED WITH OR CONTAINED IN EQUIPMENT (SMALLER CELLS AND BATTERIES)
P. 30
GUIDE
09
UN3171 BATTERY-POWERED VEHICLE P. 34
GUIDE
10
UN3536 CARGO TRANSPORT UNITS P. 36
PHMSA | PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION
9

<<<PAGE 10>>>

INSTRUCTIONS
Use this flowchart to direct to the appropriate guide number in this publication for information on hazard
communication, quantity limits, and packaging requirements for lithium ion cells and batteries. If viewing
this document electronically (i.e., on a computer or device), the guide number icons below are hyperlinked to
the corresponding shipping guide for quicker navigation through the document.
Lithium Ion Cells and Batteries
START HERE
All cells and batteries must be tested in accordance with the UN Manual of
Tests and Criteria Part III, Subsection 38.3 - see § 173.185(a).
Passed UN
Testing? NO
Prototype/Low
Production Run?
NO Redesign/Test
YES
YES
Refer to
provisions in
§ 173.185(e)
Lithium Ion Batteries
Lithium Ion Batteries
Contained in
Equipment
Lithium Ion Batteries
Packed with
Equipment
Lithium Battery
Powered Vehicles or
Equipment
Installed in a Cargo
Transport Unit
Cells
greater
than
20Wh;
and
Batteries
greater
than
100Wh
Cells equal
to or less
than 20Wh;
and Batteries
equal to or
less than
100Wh
AND
For highway
and rail
ONLY - Cells
not
exceeding
60Wh; and
Batteries not
exceeding
300Wh
Cells
greater
than
20Wh;
and
Batteries
greater
than
100Wh
Cells equal
to or less
than 20Wh;
and Batteries
equal to or
less than
100Wh
AND
For highway
and rail
ONLY - Cells
not
exceeding
60Wh; and
Batteries not
exceeding
300Wh
Cells
greater
than
20Wh;
and
Batteries
greater
than
100Wh
Cells equal
to or less
than 20Wh;
and Batteries
equal to or
less than
100Wh
AND
For highway
and rail
ONLY - Cells
not
exceeding
60Wh; and
Batteries not
exceeding
300Wh
All cell and
battery sizes
All cell and
battery sizes
GUIDE
09GUIDE
10
P.32 P.34
GUIDE
01GUIDE
02GUIDE
03GUIDE
03GUIDE
04GUIDE
04
P.10 P.15 P.15
P.12 P.18 P.18
10

<<<PAGE 11>>>

INSTRUCTIONS
Use this flowchart to direct to the appropriate guide number in this publication for information on hazard
communication, quantity limits, and packaging requirements for lithium metal cells and batteries. If viewing
this document electronically (i.e., on a computer or device), the guide number icons below are hyperlinked to
the corresponding shipping guide for quicker navigation through the document.
Lithium Metal Cells and Batteries
START HERE
All cells and batteries must be tested in accordance with the UN Manual of
Tests and Criteria Part III, Subsection 38.3 - see § 173.185(a).
Passed UN
Testing? NO
Prototype/Low
Production Run?
NO Redesign/Test
YES
YES
Refer to
provisions in
§ 173.185(e)
Lithium Metal Batteries
Lithium Metal Batteries
Contained in
Equipment
Lithium Metal Batteries
Packed with Equipment
Lithium Battery
Powered Vehicles or
Equipment
Installed in a Cargo
Transport Unit
Cells
greater
than 1 g;
and
Batteries
greater
than 2 g
Cells equal
to or less
than 1 g; and
Batteries
equal to or
less than 2 g
AND
For highway
and rail
ONLY - Cells
not
exceeding
5 g; and
Batteries not
exceeding
25 g
Cells
greater
than 1 g;
and
Batteries
greater
than 2 g
Cells equal
to or less
than 1 g; and
Batteries
equal to or
less than 2 g
AND
For highway
and rail
ONLY - Cells
not
exceeding
5 g; and
Batteries not
exceeding
25 g
Cells
greater
than 1 g;
and
Batteries
greater
than 2 g
Cells equal
to or less
than 1 g; and
Batteries
equal to or
less than 2 g
AND
For highway
and rail
ONLY - Cells
not
exceeding
5 g; and
Batteries not
exceeding
25 g
All cell and
battery sizes
All cell and
battery sizes
GUIDE
09GUIDE
10
P.32 P.34
GUIDE
05GUIDE
06GUIDE
07GUIDE
07GUIDE
08GUIDE
08
P.21 P.26 P.26
P.23 P.29 P.29
PHMSA | PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION
11

<<<PAGE 12>>>

GUIDE
01 UN3480 LITHIUM ION BATTERIES
(FULLY REGULATED CELLS AND BATTERIES)
This guide outlines the requirements for lithium ion batteries being shipped as fully regulated Class 9 lithium batteries.
Beginning May 10, 2024, all lithium ion batteries must be marked with the Wh rating on the outside case. Always check the
applicable special provisions in § 172.102 for any additional requirements or restrictions that may not be included in this guide.
UN ID Number: UN3480
Proper Shipping Name: Lithium Ion Batteries
Hazard Class Label: Class 9 Lithium Battery
Packaging Requirements - § 173.185(b) (see Guide 01 diagram for additional details):
•
Cells and batteries must be:
*
*
*
Protected against short circuiting. This means that terminals must be protected!
Placed in non-metallic inner packagings that completely enclose the cell or battery and separate them from contact with
electrically conductive materials (e.g., metal) in the packaging.
Packed to prevent shifting that could cause damage to the cells or batteries within the outer packaging.
•
The outer packaging must be a UN specification packaging meeting Packing Group II performance requirements. Remember,
all packaging instructions provided by the packaging manufacturer must be followed!
*
Alternatively, instead of a UN specification package, lithium batteries with a mass of 12 kg (26.5 pounds) or more with a
strong, impact-resistant outer casing, may be packed in strong outer packaging (such as crates) or banded to pallets or
other handling devices. Batteries packaged in this way require Associate Administrator approval for air transport.
Required Hazard Communication – Subparts C-E of Part 172 (see Guide 01 diagram for additional details):
•
Class 9 Lithium Battery label
•
Cargo Aircraft Only label (if being shipped for air transport – § 172.101(j)(4))
•
UN ID number – UN3480
•
Proper Shipping Name mark – “Lithium ion batteries”
•
Consignor (shipper) or Consignee (recipient) name and address
•
When overpacked (e.g., authorized outer packagings are further packaged or consolidated by any means), the Class 9 Lithium
Battery label, Cargo Aircraft Only label (as applicable), UN ID number, and Proper Shipping Name must be visible or replicated
on the overpack (§ 173.25).
Additional Details:
•
DOT Hazmat Employee Training – All employees involved in the shipment, including preparation for shipment are subject to the
hazmat employee training requirements of § 172.704.
•
Hazardous Materials Shipping Paper – Shippers must prepare and offer a hazardous materials shipping paper prepared in
accordance with subpart C of part 172 of the HMR (§§ 172.200-205).
•
Emergency Response Information and Emergency Response Telephone Number – Shippers must provide the appropriate
emergency response information and emergency response telephone number per subpart G of part 172 of the
HMR (§§ 172.600-606).
12

<<<PAGE 13>>>

GUIDE
01
UN3480 LITHIUM ION BATTERIES
(FULLY REGULATED CELLS AND BATTERIES)
Additional Air Restrictions or Requirements:
•
Damaged, defective, or recalled lithium batteries are forbidden from air transport. See page 7 for information on DDR batteries.
•
These shipments are forbidden to be transported as cargo on passenger aircraft (column 9 of the HMT - § 172.101).
•
When shipped by cargo aircraft, the lithium ion cells and batteries must be offered at a state of charge not exceeding 30 percent
of their rated capacity (special provision A100 – § 172.102).
•
Packages may not exceed a 35 kg net quantity of lithium ion cells and batteries, unless approved by the Associate Administrator
(column 9 of the HMT - § 172.101). “Net quantity” refers to the weight of the cells and batteries, without packaging materials.
•
Up to two replacement lithium ion cells or batteries specifically used for medical devices may be transported as cargo on
passenger aircraft and exceeding 30 percent state of charge, when approved by the Associate Administrator, and meeting the
requirements of § 173.185(g).
•
Lithium ion cells and batteries must not be packed in the same outer packaging with substances and articles of Class 1
(explosives) other than Division 1.4S, Division 2.1 (flammable gases), Class 3 (flammable liquids), Division 4.1 (flammable solids), or
Division 5.1 (oxidizers) (§ 173.185 (b)(7)).
PACKAGING AND HAZARD COMMUNICATION DIAGRAM
The inner packaging must completely enclose the cells or batteries in the package. The
inner packaging may also be used to meet protection against short circuiting/terminal
protection requirements. See § 173.185(b)(3)(i).
Protection against short circuiting/terminal protection is an important aspect of packaging.
Any method is acceptable, provided this important performance requirement is met.
Cargo Aircraft Only Label § 172.448
(if being shipped for air transport)
Class 9 Lithium Battery Label
§ 172.447
Consignor (shipper) or
Consignee (recipient)
Name and Address -
§ 172.301
UN ID Number and
Proper Shipping
Name -
§ 172.301
UN3480, Lithium Ion Batteries
u
n
4G/Y50/S/19/
USA/0000
u
n
4G/Y50/S/19/
USA/0000
Sample UN Specification Package Marking
For UN Specification packaging, always
follow the packaging manufacturer’s
packaging and closure instructions
Authorized Specification Outer Packaging Types *:
Boxes: Metal (4A, 4B, 4N), wooden (4C1, 4C2, 4D, 4F), fiberboard (4G), or solid plastic (4H1, 4H2)
Drums: Metal (1A2, 1B2, 1N2), plywood (1D), fiber (1G), or plastic (1H2)
Jerricans: Metal (3A2, 3B2) or plastic (3H2)
See § 173.185(b)(3)(ii).
* Must meet the Packing Group II Performance requirements
PHMSA | PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION
13

<<<PAGE 14>>>

GUIDE
02
UN3480 LITHIUM ION BATTERIES
(SMALLER CELLS AND BATTERIES)
This guide outlines the requirements for lithium ion batteries meeting exceptions for smaller lithium cells and batteries
in § 173.185(c). Beginning May 10, 2024, all lithium ion batteries must be marked with the Wh rating on the outside case. Always
check the applicable special provisions in § 172.102 for any additional requirements or restrictions that may not be included in
this guide.
UN ID Number: UN3480
Proper Shipping Name: Lithium ion batteries
Hazard Class Label: N/A
Packaging Requirements - § 173.185(b) (see Guide 02 diagram for additional details):
•
Cells and batteries must be:
*
*
*
Protected against short circuiting. This means that terminals must be protected!
Placed in non-metallic inner packagings that completely enclose the cell or battery and separate them from contact with
electrically conductive materials (e.g., metal) in the packaging.
Packed to prevent shifting that could cause damage to the cells or batteries within the outer packaging.
•
Each outer package must be a strong outer packaging and capable of withstanding a 1.2 meter drop test, in any orientation,
without damage to the cells or batteries, without shifting that would allow battery-to-battery contact, and without release of the
contents. They are not required to be packaged in UN specification packaging.
•
Completed package must not exceed 30 kg (66 pounds) gross weight. See Additional Air Restrictions or Requirements for the
package quantity limits for air transportation.
Required Hazard Communication - § 173.185(c) (see Guide 02 diagram for additional details):
•
Lithium Battery Mark
*
UN ID Number – 3480 (Replaces “*” on Lithium Battery Mark)
*
*
*
Telephone number for additional information (Replaces “**” on Lithium Battery Mark) †
The mark must be in the form of a rectangle or a square with hatched edging. The mark must be not less than 100 mm
(3.9 inches) wide by 100 mm (3.9 inches) high and the minimum width of the hatching must be 5 mm (0.2 inches), except
marks of 100 mm (3.9 inches) wide by 70 mm (2.8 inches) high may be used on a package containing lithium batteries
when the package is too small for the larger mark
When placed in an overpack, the mark must be visible or reproduced on the overpack and the overpack must be marked
with the word “OVERPACK” in lettering at least 12 mm (0.47 inches) high
•
•
Text marking that shipment is forbidden for transport aboard passenger aircraft (see § 173.185(c)(1)(iii) for text marking options)
or Cargo Aircraft Only (CAO) label (For shipments made in accordance with international standards and regulations, the CAO
label may be required)
For highway and rail transportation only: Cells that exceed 20 Wh, but do not exceed 60 Wh, and batteries that exceed 100
Wh, but do not exceed 300 Wh, the text marking “LITHIUM BATTERIES—FORBIDDEN FOR TRANSPORT ABOARD AIRCRAFT
AND VESSEL” is required. (See § 173.185(c)(1)(iv)). This text marking should be used in place of the transport aboard passenger
aircraft text marking or CAO label.
† Telephone number removed from lithium battery mark with a phaseout date of December 31, 2026 (HM-215Q, effective May 10, 2024)
14

<<<PAGE 15>>>

GUIDE
02
UN3480 LITHIUM ION BATTERIES
(SMALLER CELLS AND BATTERIES)
Additional Details - § 173.185(c):
•
Hazmat employees are not subject to the training requirements of § 172.704. However, for air shipments, each person who
prepares a package for shipment, must receive instruction on these requirements, corresponding to their functions.
•
No Hazardous Materials Shipping Paper required
•
No Emergency Response Information and Emergency Response Telephone Number required.
Additional Air Restrictions or Requirements - § 173.185(c)(5):
•
A package prepared in accordance with the size limits for small batteries is subject to all requirements applicable to fully regulated
lithium ion batteries. However, if the package contains no more than 10 kg of lithium ion cells or batteries, UN performance
packaging is not required when the package displays both the Lithium Battery Mark and the Class 9 Lithium Battery label. See
173.185(c)(5)(i) for details.
•
Damaged, defective, or recalled lithium batteries are forbidden from air transport. See page 7 for information on DDR batteries.
•
These shipments are forbidden to be transported as cargo on passenger aircraft (column 9 of the HMT - § 172.101).
•
When shipped by cargo aircraft, lithium ion cells and batteries must be offered at a state of charge not exceeding 30 percent of
their rated capacity (special provision A100 – § 172.102).
•
For transportation by aircraft, lithium cells and batteries must not be packed in the same outer packaging with substances and
articles of Class 1 (explosives) other than Division 1.4S, Division 2.1 (flammable gases), Class 3 (flammable liquids), Division 4.1
(flammable solids), or Division 5.1 (oxidizers).
•
Each package must be capable of withstanding, without damage to the cells or batteries contained therein and without any
reduction of effectiveness, a force applied to the top surface equivalent to the total weight of identical packages stacked to a
height of 3 meters (including the test sample) for a duration of 24 hours.
PHMSA | PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION
15

<<<PAGE 16>>>

GUIDE
02
UN3480 LITHIUM ION BATTERIES
(SMALLER CELLS AND BATTERIES)
PACKAGING AND HAZARD COMMUNICATION DIAGRAM (OTHER THAN BY AIR)
Protection against short circuiting/terminal protection is an important aspect
of packaging. Any method is acceptable, provided this important performance
requirement is met.
UN Specification packaging is not required. Packaging must meet performance
requirements listed in the "Packaging Requirements" section of this shipping guide.
UN3480
For more information call...................
Cargo aircraft only label
§ 172.448
Alternatively, a text marking
listed in § 173.185(c)(1)(iii)
may be used, as applicable.
However, the CAO label
may be required for ship-
ments made in accordance
with international stan-
dards and regulations.
UN3480
For more information call...................
Lithium Battery Mark
§ 173.185(c)(3)
•
•
•
UN ID Number(s)
Telephone number for ad-
ditional information about
the shipment †
A minimum of 100 mm
wide x 100 mm high, or
when the package is too
small 100 mm wide x 70
mm high
Text markings, when used, must use let-
ters at least 6 mm (0.25 inch) in height on
packages having a gross weight of 30 kg
(66 pounds) or less, except that smaller font
may be used as necessary when package
dimensions so require.
Letters must be at least 12 mm (0.5 inch) in
height on packages having a gross weight
of more than 30 kg (66 pounds).
If cells exceed 20 Wh, but do not exceed 60 Wh, or
batteries exceed 100 Wh, but do not exceed 300 Wh...
The text marking "LITHIUM BATTERIES—FORBIDDEN FOR
TRANSPORT ABOARD AIRCRAFT AND VESSEL" is required.
See § 173.185(c)(1)(iv). This text marking should be used in
place of the transport aboard passenger 
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