ICAO Caps Air Travelers to Two Power Banks Each

The International Civil Aviation Organization has endorsed new global guidance limiting airline passengers to two portable power banks each and prohibiting in flight recharging, marking the most significant tightening of lithium battery rules for travelers in years.

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New Global Standard Targets Growing Power Bank Risks

The updated guidance, reflected in the latest addendum to ICAO’s Technical Instructions for the Safe Transport of Dangerous Goods by Air, sets a clear global reference point for how many power banks individual travelers may carry. The core rule restricts passengers to no more than two power banks in their possession, with both devices required to travel in carry on baggage rather than checked luggage.

Power banks are formally treated as spare lithium ion batteries because their primary purpose is to supply power to other devices. Under the new framework, they remain strictly barred from checked baggage, in line with long standing concerns about undetected fires in aircraft holds. The two unit cap is intended to curb scenarios in which a single traveler boards with multiple high capacity battery packs, each representing a potential ignition source.

The guidance also formalizes an operational change that many airlines had already begun to adopt. Power banks are not to be recharged during flight, and passengers are advised not to use them to charge other devices while on board. Publicly available regulatory documents describe these limitations as risk reduction measures aimed at minimizing heat buildup and fire risk in confined cabin spaces.

While the ICAO Technical Instructions are not themselves domestic law, they function as the template that national regulators and airlines typically incorporate into their own rules. Industry commentary indicates that the new wording is being prepared for inclusion in the 2025 to 2026 edition of the instructions, with a transition period as individual authorities align their regulations.

How the Two Power Bank Limit Works in Practice

Under the new guidance, each passenger is allowed to carry up to two power banks meeting existing watt hour and design limits. The long standing threshold of 100 watt hours or less for most consumer devices remains the principal benchmark for carriage without special airline approval. Power banks above that level, up to 160 watt hours, generally require operator consent and are typically capped at two per passenger even under earlier lithium battery rules.

Quantity is only part of the equation. The devices must be individually protected against short circuit, for example by keeping terminals covered, using original packaging, or storing them in dedicated cases or pouches within a bag. Regulators also stress that damaged, swollen, or recalled power banks are not to be taken on board at all, reflecting concerns about cells that are more prone to thermal runaway.

Travelers accustomed to carrying several small power banks for long itineraries may feel the impact of the new ceiling most directly. However, consumer electronics trends have also shifted toward fewer, higher capacity units. Aviation safety specialists note that limiting the number per person is intended to keep the total fire load from portable batteries more manageable during an onboard incident.

For now, the practical effect for many passengers will depend on how quickly their home countries and preferred airlines move to update passenger notices, security screening procedures, and check in guidance. Some carriers already mirror the two spare battery limit in their dangerous goods tables, and are expected to relabel these provisions to refer explicitly to power banks.

From Cabin Incidents to Coordinated Global Response

The tightening of rules comes after a steady rise in reported cabin incidents involving lithium powered devices, including power banks. Public safety databases and media coverage document cases of battery packs overheating or igniting in overhead bins, seat pockets, and under seats, occasionally forcing emergency responses by crew and diversions by flight crews.

Earlier ICAO amendments had focused on restricting the carriage of active lithium powered devices in checked baggage and clarifying that spare batteries should remain in the cabin, where crew and passengers can detect smoke or heat more quickly. Regional regulators, including agencies in Europe, North America, and Asia Pacific, have also issued safety bulletins urging airlines to strengthen passenger briefings on how to pack and monitor lithium powered items.

Several national authorities and airport operators moved ahead with their own caps and usage bans in recent years, particularly after high profile incidents involving power banks. These measures included prohibitions on charging battery packs in flight, requirements to keep them on the person rather than in overhead bins, and numerical limits per traveler. The new ICAO benchmark is widely viewed by industry observers as an effort to harmonize such patchwork rules into a more consistent global baseline.

As ICAO’s technical guidance filters into airline operations manuals and airport procedures, travelers can expect more visible enforcement at security checkpoints and boarding gates. Carriers are likely to refine pre flight announcements and safety cards to emphasize that power banks should remain switched off, must not be charged on board, and must be limited in number.

What Air Travelers Should Do Now

For passengers, the most immediate adjustment is to plan itineraries around the expectation that only two power banks will be permitted, and that these must be packed in carry on bags. Experts recommend checking the watt hour rating, which is typically printed on the casing, to ensure each device remains within airline and regulatory limits and to avoid issues at security screening.

Travelers connecting between regions with differing enforcement timelines may encounter variations in how strictly the new standard is applied. Aviation organizations advise that passengers adopt the most conservative interpretation when in doubt, carrying only two compliant power banks and avoiding in flight use even on routes where older rules may still be displayed on airline websites or booking confirmations.

Alternative charging strategies, such as making greater use of power outlets in terminals or on board where provided, and consolidating devices around a single, reliable power bank, are likely to become more common. Some travel advisers suggest investing in one high quality unit that meets international labeling and certification standards, rather than multiple low capacity devices of uncertain origin.

As with earlier lithium battery regulations, the new ICAO guidance is expected to evolve in response to emerging technology and incident data. For now, the organization’s two power bank limit and in flight charging prohibition set a clear direction for airlines and regulators, while signaling to passengers that portable energy storage will remain a central focus of air travel safety policy.