Lithium-Ion Battery State of Charge: What Shippers Need to Know

As of January 1, 2025, the IATA Dangerous Goods Regulations (DGR), 66th Edition, recommend that lithium-ion batteries shipped by air—whether packed with equipment (UN 3481) or contained in equipment—be offered for transport with a state of charge (SoC) not exceeding 30% of their rated capacity.

This recommendation brings batteries packed with or contained in equipment in line with the existing SoC requirement for standalone lithium-ion batteries (UN 3480).

What’s Recommended—and What’s Mandatory?

Recommended for 2025

• Lithium-ion batteries packed with or contained in equipment should have a SoC of 30% or less.

Mandatory as of January 1, 2026

• Lithium-ion batteries packed with equipment (UN 3481, PI 966) must have a SoC of 30% or less, unless transported under an applicable special approval.

• Vehicles powered by lithium-ion batteries (UN 3556)  are also subject to a 30% SoC limit or not exceeding 25% indicated battery capacity, unless an applicable approval applies.

Why Does State of Charge Matter?

Reducing the state of charge of lithium-ion batteries helps reduce the potential severity of a thermal runaway event during air transport. The 2025 recommendation period gives shippers and supply chains time to implement processes and prepare for the mandatory requirements that took effect in 2026.

How DGC Logistics Can Help

Preparing for changing regulations can be challenging. DGC Logistics can help you:

• Prepare Early: Establish SoC controls and procedures for lithium-ion battery shipments.

• Stay Compliant: Review your shipments and documentation against applicable IATA requirements.

• Reduce Delays: Help identify potential compliance issues before your shipment reaches the airline.

Need help with lithium-ion battery shipments? Contact DGC Logistics for expert dangerous goods guidance and support.