UN3481 vs UN1323: Classification Guide for Lithium Batteries

UN3481 applies to lithium-ion batteries packed with or contained in equipment, while UN1323 applies to flammable organic solids and is not used for batteries.

If you ship lithium batteries internationally, choosing the correct UN number is critical. This guide explains UN3481 meaning, UN3481 battery labeling requirements, shipping regulations, and how UN3481 differs from UN3480 and other battery classifications.

Key takeaways

• UN3481 is the correct classification for rechargeable lithium-ion batteries shipped with equipment or inside equipment.
• UN1323 is a Class 4.1 flammable solid classification and does not apply to lithium batteries.
• The UN3481 label identifies lithium-ion batteries associated with electronic devices.
• The main difference between UN3480 and UN3481 is that UN3480 covers batteries shipped alone, while UN3481 covers batteries shipped with equipment.
• Incorrect classification can result in shipment delays, fines, and dangerous goods compliance violations.
• UN3481 shipments must comply with IATA, IMDG, DOT, and applicable national regulations.

Part 1. What is a lithium battery?

A lithium battery is an electrochemical energy storage device that uses lithium as a key active material.

Lithium batteries are widely used in:

• Consumer electronics
• Medical devices
• Drones
• Power tools
• Solar energy storage systems
• Electric vehicles (EVs)
• Industrial equipment

There are two primary categories:

Lithium-Ion Batteries (Rechargeable)

Examples include:

• Smartphones
• Laptops
• Power stations
• Solar batteries
• Electric vehicles

Lithium Metal Batteries (Non-Rechargeable)

Examples include:

• Watches
• Sensors
• Medical monitoring devices
• Backup memory batteries

Because lithium batteries can present thermal runaway and fire risks, international transport regulations require proper classification, packaging, testing, and labeling.

For transportation testing requirements, see: UN38.3 Testing Requirements for Lithium Batteries

Part 2. What does un3481 mean?

UN3481 is the official UN number assigned to:

Lithium-Ion Batteries Contained in Equipment

Examples:

• Laptop with battery installed
• Smartphone with battery installed
• Medical device with built-in battery
• Electric tool with battery installed

Lithium-Ion Batteries Packed With Equipment

Examples:

• Drone shipped with spare battery
• Power tool shipped with battery in the same package
• Communication equipment shipped with replacement battery

In both cases, the batteries are associated with the equipment being shipped.

UN3481 battery classification

UN3481 batteries are classified as: Class 9 — Miscellaneous Dangerous Goods

Common UN3481 battery examples

• Laptop batteries
• Smartphone batteries
• Drone batteries
• Power tool batteries
• Portable medical batteries
• Solar monitoring device batteries

Part 3. What does un3481 label mean?

The UN3481 label meaning is straightforward: The package contains lithium-ion batteries that are either:

• Installed in equipment, or
• Packed together with equipment

The lithium battery mark helps carriers, handlers, customs officials, and emergency responders identify the contents and follow appropriate safety procedures.

Typical information on a UN3481 battery label includes:

• Lithium battery symbol
• UN number (UN3481)
• Emergency contact information when required by regulations

The exact marking requirements depend on:

• Battery watt-hour rating
• Quantity shipped
• Mode of transport
• Applicable regulations

Part 4. What does un1323 mean?

Unlike UN3481, UN1323 is not a battery classification.

UN1323 is officially described as: Flammable Solid, Organic, N.O.S. (Not Otherwise Specified)

It is used for certain combustible organic materials that do not fit more specific UN classifications.

Examples may include:

• Certain chemical powders
• Organic industrial compounds
• Specialized manufacturing materials

Important

UN1323:

• Is not a lithium battery classification
• Is not used for lithium-ion batteries
• Is not used for lithium metal batteries
• Should never appear on a lithium battery shipment

If a lithium battery shipment is labeled as UN1323, it has likely been misclassified.

Part 5. Un3481 vs un1323: what’s the difference?

The difference between UN3481 and UN1323 is fundamental.

Why the difference matters

Misclassifying a battery shipment can lead to:

• Customs holds
• Shipment rejection
• Regulatory investigations
• Carrier penalties
• Increased liability in case of incidents
• Delays in international supply chains

For battery manufacturers and importers, correct UN classification is essential for compliance and safety.

Part 6. Difference between un3480 and un3481

One of the most searched questions is: What is the difference between UN3480 and UN3481?

UN3480 examples

• Bulk battery shipments
• Standalone battery packs
• Solar batteries shipped separately
• Replacement batteries

UN3481 examples

• Laptop with battery installed
• Drone with battery included
• Medical device shipped with battery
• Power tool and battery in same carton

Quick rule

• Battery only = UN3480
• Battery + equipment = UN3481

This distinction affects:

• Packaging instructions
• Labeling requirements
• Documentation
• Air transport limitations

Part 7. How to identify a un3481 battery shipment

Your shipment is likely UN3481 if all of the following are true:

• The battery is lithium-ion
• The battery is rechargeable
• The battery is shipped with equipment or installed in equipment
• The battery is not being transported separately

Decision table

Part 8. Why proper un3481 battery classification matters?

Safety

Proper packaging reduces:

• Short circuits
• Thermal runaway
• Fire risks
• Transportation incidents

Regulatory Compliance

Accurate classification helps satisfy:

• IATA requirements
• IMDG Code requirements
• DOT regulations
• Customs inspections

Insurance Protection

Many insurance providers require full dangerous goods compliance before accepting claims related to transportation incidents.

Supply Chain Efficiency

Correct labels and documentation reduce:

• Customs delays
• Shipment rejections
• Carrier restrictions
• Unexpected compliance costs

Part 9. Un3481 shipping regulations

IATA Air Transport Requirements

For air transport, UN3481 generally follows:

• Packing Instruction 966 (packed with equipment)
• Packing Instruction 967 (contained in equipment)
• Terminal protection requirements
• Quantity limitations
• Lithium battery marking requirements

IMDG Sea Freight Requirements

For ocean transport:

• Class 9 classification applies
• Packaging must prevent movement and damage
• Batteries must be protected from short circuits
• Documentation requirements must be met

DOT Requirements in the United States

U.S. shipments typically follow:

• 49 CFR Parts 171–180
• 49 CFR 173.185 lithium battery provisions
• Hazard communication requirements
• Incident reporting requirements where applicable

Part 10. Safe shipping practices for un3481 batteries

Follow these best practices:

1. Use Approved Packaging

Packaging should:

• Prevent crushing
• Prevent movement
• Protect batteries from damage

2. Prevent Short Circuits

• Cover exposed terminals
• Separate batteries from conductive materials

3. Apply Correct Labels

Use the correct:

• UN3481 battery mark
• Handling labels
• Documentation

4. Verify Documentation

Ensure:

• Shipping papers are accurate
• Battery specifications are available
• UN38.3 test reports are maintained

5. Train Personnel

Personnel handling lithium batteries should receive dangerous goods training appropriate to their responsibilities.

Part 11. Summary of lithium battery un numbers

For additional battery transportation guidance, see: Lithium Battery Shipping Regulations Guide

Part 12. FAQs about un3481 batteries