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Safety first: Shipping lithium-ion batteries by air

International commitments to achieve carbon neutrality in the coming decades depend on the electrification of our economies, and that means a greatly expanded role for rechargeable lithium-ion batteries. To keep this critical technology moving through global supply chains, shippers must understand how to safely ship lithium-ion batteries by air.

Fully charged: the growing demand for lithium-ion batteries

Global demand for lithium-ion battery technology has skyrocketed in recent years, with forecasts predicting 18% annual growth in the years to come. This will be driven largely by the transformational electrification of our transportation sector – above all through electric vehicles (EVs). Realistic projections show EVs making up more than 50% of new car sales by 2040, and advances in EV science may well see this happen sooner.

The unrelenting consumer demand has pushed manufacturers to engineer lithium-ion batteries in ever greater density. As a result, today’s batteries offer an unbeatable combination of performance, light weight, and efficiency. But this energy density also heightens the risks if the batteries are not transported properly. The airline industry, in particular, is concerned about the lack of awareness of the potential danger posed by lithium-ion batteries and increasing incidents of intentionally mis-declared or non-compliant lithium batteries in cargo shipments.

Surging global demand for lithium-ion batteries

Surging global demand for lithium-ion batteries

Source: Statista, January 2023

Is shipping lithium-ion batteries hazardous? It depends …

Officially, yes: Lithium-ion batteries are governed under the United Nations regulations UN3480 and UN3481 as Class 9 “miscellaneous dangerous goods.” Two dangers stand out: First, improperly packaged lithium-ion batteries can lead to short circuits if they come into contact with each other or with other conductive surfaces. Second, thermal runaway can occur if improperly packaged or secured lithium-ion batteries suffer damage to their internal circuitry when shaken or dropped. Either of these situations can end in fire or explosion.

Unfortunately, most people are unaware that lithium-ion batteries are hazardous and cannot be shipped like other goods. This awareness gap, coupled with the complexity and inadequacy of current regulations, has fueled the widespread and growing noncompliance that is of such concern to the airline industry.

But there’s good news: Lithium-ion batteries can be shipped safely by air if shippers take proper precautions. As with all hazardous goods, safely shipping lithium-ion batteries by air requires having personnel with the appropriate expertise and training and complying with strict labeling and packaging requirements. That’s why the International Air Transport Association (IATA) is promoting the increased viability of air transport for lithium-ion batteries through a four-part approach:

  1. Generate awareness of the potential risk and applicable regulations.
  2. Promote the development of outcome-based, harmonized safety-related screening standards and processes for lithium batteries.
  3. Advocate for stricter enforcement mechanisms, including stiffer penalties for rogue shippers and the criminalization of egregious or willful offenses.
  4. Institute protections against accidents, such as fire-resistant aircraft containers.

Li-ion and EV revolution by the numbers


Expected annual growth in global demand for lithium-ion batteries between 2023 and 2030

2,035 gigawatt-hours

Projected annual global demand for lithium-ion battery capacity in 2030


Share of the global demand for lithium-ion batteries expected to come from transportation sector in 2030


Projected share of EVs among new car sales in 2040

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Up and away: how to ship lithium-ion batteries by air

As mentioned above, transporting lithium-ion batteries is regulated by UN3480 (for batteries “contained in or packed with the equipment, but not attached to the source”) and UN3481 (“contained in or packed with the equipment, installed/integrated at the source”). There are also IATA regulations for air transport. Shippers must follow these rules, be appropriately certified, and have the training and expertise to prepare lithium-ion batteries for safe air transport.

Here are some of the criteria for shipping lithium-ion batteries by air:

Lithium-ion batteries must be packaged in compliance with regulations including UN3480, UN3481, and IATA-specific rules. (Picture credit: GWP Group)

State of charge

Lithium-ion batteries in transit may not exceed a defined maximum state of charge (SoC) – their level of charge relative to capacity. According to the IATA, the SoC must not exceed 30%, and it’s the shipper’s responsibility to ensure compliance with this regulation.


Lithium-ion batteries shipped alone must be packaged in isolation from one another and other conductive surfaces to avoid short circuits. They must also be isolated from certain other dangerous goods. Their packaging must prevent undue movement in transit and damage if dropped to protect against thermal runaway.


Lithium-ion batteries must be appropriately labeled so everyone handling them can comply with the relevant guidelines for Class 9 dangerous goods. The required information on the label may include the type, weight, dimensions, and capacity of the battery, along with the mode of transport.


Ultimately, shippers are solely and entirely responsible for compliance and legally liable in the event of accidents due to noncompliance, so it is in their own self-interest to familiarize themselves with the UN and IATA requirements.

IATA CEIV Li-batt: the symbol of operational excellence

The Center of Excellence for Independent Validators Lithium Batteries (CEIV Li-batt) is a certification program spearheaded in part by IATA to address safety concerns and help shippers, freight forwarders, cargo handling facilities, and airlines comply with the applicable transport regulations. This compliance is documented by CEIV Li-batt certification.

CEIV logo

Applicants must pass a CEIV Li-batt training, followed by an assessment and validation conducted by an Independent Validator to determine compliance with the criteria of the CEIV Li-batt audit checklist. Recertification is required every two years.

DHL Global Forwarding is the first CEIV Li-batt-certified organization in the United Kingdom. The certification covers six sites – Birmingham, Glasgow, London, Luton, Manchester, and Purfleet – and follows a rigorous months-long certification process across these locations encompassing employee training, on-site assessments, and audits.

Certified excellence, simply delivered

Lithium-ion battery supply chains must avoid the kinds of problems facing semiconductor supply chains. This means:

  • All modes of transport must be made viable. CEIV Li-batt certification addresses the airlines’ concerns by meeting IATA’s own regulations.
  • Specialized expertise is vital. At DHL, we are committed to acquiring and maintaining the expertise needed to make air transport of lithium-ion batteries safe and reliable.

The CEIV Li-batt certification confirms our compliance with safe packing, handling, and shipment of lithium batteries by air while complementing our earlier qualifications for the shipment of dangerous goods by road and rail. It also demonstrates our operational excellence, so we are auditing and certifying other key facilities in our global air freight network.

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Published: April 2023

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