Lithium batteries are classified as Dangerous Goods Class 9 under international air transport regulations due to their potential to cause fire, explosion, or thermal runaway if improperly handled.

The global air transport of lithium batteries is primarily regulated by the:

• International Air Transport Association (IATA) Dangerous Goods Regulations (DGR)
• International Civil Aviation Organization (ICAO) Technical Instructions
• United Nations Model Regulations

This guide explains how lithium batteries must be classified, packaged, labeled, and shipped under IATA standards in 2026.

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1. Overview of IATA Lithium Battery Regulations

According to IATA:

Lithium batteries must be classified, packaged, and declared according to their chemistry, configuration, and Watt-hour (Wh) rating.

Source: International Air Transport Association (IATA)
https://www.iata.org/en/programs/cargo/dgr/lithium-batteries/

The IATA Dangerous Goods Regulations (DGR) are the industry implementation of ICAO Technical Instructions, making them the most widely used operational standard for air cargo globally.

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2. Lithium Battery Classification Under IATA

IATA classifies lithium batteries based on configuration:

2.1 Lithium Ion Batteries

• UN3480 → Lithium-ion batteries shipped alone
• UN3481 → Lithium-ion batteries contained in or packed with equipment

2.2 Lithium Metal Batteries

• UN3090 → Lithium metal batteries shipped alone
• UN3091 → Lithium metal batteries contained in or packed with equipment

Source: United Nations Economic Commission for Europe
UN Model Regulations: https://unece.org/transport/dangerous-goods/un-model-regulations

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3. IATA Packing Instructions (Critical Compliance Rules)

Each lithium battery shipment must follow specific Packing Instructions (PI) defined in the IATA DGR:

• PI965 → UN3480 (Lithium-ion batteries only)
• PI966 → UN3481 (packed with equipment)
• PI967 → UN3481 (contained in equipment)
• PI968–PI970 → Lithium metal batteries (UN3090/3091)

Source: International Civil Aviation Organization (ICAO)
https://www.icao.int/safety/DangerousGoods/Pages/default.aspx

These instructions define:

• Packaging standards
• Quantity limits
• Labeling requirements
• Documentation obligations
• Acceptance conditions by airlines

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4. State of Charge (SoC) Requirements

One of the most critical air transport restrictions is State of Charge (SoC).

For UN3480 lithium-ion batteries:

• Maximum SoC is typically ≤30%
• Applies to cargo aircraft shipments unless otherwise approved

Source: International Air Transport Association (IATA)
https://www.iata.org/en/programs/cargo/dgr/

SoC control is a key safety requirement to reduce thermal runaway risk during transport.

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5. Packaging Requirements (IATA DGR Compliance)

IATA requires lithium batteries to be packaged to prevent:

• Short circuits
• Mechanical damage
• Accidental activation
• Thermal propagation

Typical requirements include:

• Strong rigid outer packaging
• Non-conductive inner separation
• Terminal protection (tape or caps)
• Shock and vibration resistance
• Compliance with PI965–PI967 standards

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6. Labeling and Marking Requirements

All lithium battery shipments under IATA must include:

• Lithium Battery Handling Label
• UN number marking (UN3480 / UN3481 / UN3090 / UN3091)
• Class 9 Dangerous Goods label (when applicable)
• Cargo Aircraft Only label (for restricted shipments)

Incorrect labeling is one of the most common reasons for airline rejection.

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7. Documentation Requirements (Mandatory)

IATA-compliant lithium battery shipments typically require:

• UN38.3 Test Report (mandatory for transport approval)
• Material Safety Data Sheet (MSDS)
• Shipper’s Declaration for Dangerous Goods (DGD)
• Commercial Invoice
• Packing List
• Air Waybill (AWB)

Source: International Air Transport Association (IATA)
https://www.iata.org/en/publications/dgr/

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8. Airline Acceptance Rules

Airlines apply additional operational restrictions on top of IATA rules:

• Operator approval required for most lithium battery cargo
• Cargo Aircraft Only (CAO) restrictions for UN3480
• Quantity limitations per package
• Route-specific acceptance policies

These rules vary by carrier but are all derived from IATA DGR compliance frameworks.

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9. Common Compliance Failures

Most lithium battery shipment failures occur due to:

• Incorrect UN classification (3480 vs 3481 confusion)
• Missing or invalid UN38.3 report
• Improper SoC declaration
• Non-compliant packaging
• Incorrect labeling or missing hazard marks

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10. IATA vs ICAO vs UN Regulations

Understanding the hierarchy is critical:

• UN Model Regulations → Define global classification system
• ICAO Technical Instructions → Legal aviation standard
• IATA DGR → Industry operational implementation

Source: International Civil Aviation Organization (ICAO)
https://www.icao.int/safety/DangerousGoods/Pages/default.aspx

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The IATA Lithium Battery Shipping Regulations form the global operational backbone for air transport of lithium batteries.

Compliance is based on three pillars:

• Correct classification (UN3480 / UN3481 / UN3090 / UN3091)
• Proper packaging under IATA Packing Instructions (PI965–PI970)
• Full documentation including UN38.3 certification

Failure to comply may result in:

• Shipment rejection by airlines
• Customs delays
• Financial penalties
• Safety incidents

For international logistics operators, strict adherence to IATA DGR is essential for safe, legal, and efficient lithium battery transportation.