# Power Banks Get Fresh Scrutiny as Airlines Tighten In-Flight Safety Rules
Airlines worldwide are intensifying warnings about power banks in carry-on luggage following a coordinated safety campaign. The push targets lithium-ion batteries, which power the ubiquitous portable chargers millions of travelers carry daily.
The concern centers on thermal runaway, a chain reaction where lithium-ion cells overheat and ignite with little warning. Inside an aircraft cabin at 35,000 feet, a battery fire spreads fast and proves difficult to extinguish. Cabin pressure and altitude amplify the danger. Cargo holds lack fire-suppression systems, making fires there catastrophic.
Recent incidents drove the campaign. In 2023, an electrical fire on a cargo plane in Japan killed two pilots. Investigators traced it to lithium-ion batteries in cargo. Similar fires have struck cargo operations globally, prompting regulators including the FAA and European Union Aviation Safety Agency to coordinate messaging with airlines.
The new campaign urges passengers to declare power banks at check-in rather than pack them in checked baggage. Travelers should carry them in carry-on luggage instead, where flight crews monitor them. Airlines recommend passengers disable or isolate power banks by removing cables and placing them in protective cases.
Capacity matters too. Power banks over 100 watt-hours (Wh) face strict limits. Many standard models fall between 20,000-30,000 mAh, roughly equivalent to 75-111 Wh. Travelers need to check specs before boarding.
The campaign reflects aviation's broader reckoning with lithium-ion transport. Phone batteries, laptop chargers, and e-cigarettes all contain the same technology. As devices proliferate, so do battery-related incidents. Airlines can't eliminate the risk entirely, but they can manage it through disclosure and placement rules.
The message remains straightforward: declare before you fly, pack smart, and keep your battery where crew can see it.