CAA tightens lithium battery rules amid rising fire fears

Travelers carrying power banks and other portable electronics now face tighter UK aviation rules as the Civil Aviation Authority presses airlines and passengers to treat lithium batteries as a growing safety threat. The regulator said the changes, which took effect on 27 March 2026, were designed to reduce fire risk and make passenger and airline responsibilities clearer.

The updated guidance applies to lithium cells, batteries and power banks carried by air. The Civil Aviation Authority says those devices must be treated as dangerous goods, with safety requirements built around International Civil Aviation Organization technical instructions for the safe transport of dangerous goods by air. For passengers, the practical message is straightforward: lithium-powered items are no longer a routine afterthought in baggage handling, but a regulated risk category that airlines are expected to manage more tightly.

The regulator has sharpened its focus because it sees fire, smoke and fumes as one of aviation’s most serious hazards. Its own analysis says the highest risk comes from undeclared and undetected lithium batteries being carried as cargo or mail. It has previously warned that a lithium battery fire in the hold of an aircraft is a significant operational safety risk, a scenario that can quickly escalate into an emergency the crew may struggle to contain.

The Civil Aviation Authority has also tried to push the issue beyond rulemaking. On 4 May 2023, it launched the industry campaign Batteries are included to explain the measures needed for the safe shipping of lithium batteries by air. The regulator says it also provides guidance videos for cabin crew and cargo workers on safe handling and transport, including fire-risk awareness and compliance with the international technical instructions. That training is meant to close the gap between written rules and day-to-day enforcement, where undeclared batteries can still slip through.

The CAA says more awareness is needed and asks passengers to do the right thing. The warning lands at a time when portable chargers, spare cells and battery-packed devices have become essential travel items, but one that also underlines a broader aviation problem: the fastest-growing consumer convenience in the cabin is also one of the industry’s hardest fire risks to police.