BANGKOK, June 6 -- Thailand's aviation regulator has tightened rules on power banks on flights after a series of lithium-battery scares, more than two months after standards set by the International Civil Aviation Organisation (ICAO) took effect.

The move follows the January 2025 Air Busan fire in South Korea, where early investigations suggested a power bank may have been involved, as well as Thai-linked incidents on Thai AirAsia in January 2024 and Bangkok Airways in July 2025.

The Civil Aviation Authority of Thailand said power banks must now be carried only in cabin baggage and are banned from checked luggage, The Bangkok Post reported this week.

It capped devices at 100 watt-hours, or 20,000 milliampere-hours, while power banks be...