The Civil Aviation Authority says flights could be delayed this summer unless passengers are warned of the dangers of packing electrical gadgets in their suitcases.
The body says 36% of passengers are unaware that lithium-powered devices must be carried as hand luggage, not in checked-in luggage, as they can overheat at altitude.
Reports of overheating or malfunctioning devices nearly doubled last year, according to the CAA, and there are now tow lithium battery incidents every week.
Two have occurred on UK-bound flights in recent weeks, it said.
Power banks and vapes pose the greatest risk, according to the CAA, but the list of banned items from checked-in luggage also includes laptops, Bluetooth speakers, fitness watches, smart watches, digital cameras, tablets and e-readers, wireless headphones and electric fans.
CAA Director of Aviation Safety Giancarlo Buono said: “As millions of people prepare to travel this summer, packing your devices correctly is an important part of flying safely.
“Power banks, vapes and spare lithium batteries should always be carried in the cabin, not packed in checked baggage.
“Pack right for a safe flight and help reduce the risk of delays, diversions and safety risks this summer.”
The CAA is also reminding passengers that they can’t travel with more than two power banks, and these must not be recharged inflight. It is advising passengers to check any other restrictions on electronic devices with their airlines before you fly, as some have additional restrictions.
Giuseppe Capanna, product safety engineer at Electrical Safety First, advised passengers to check their devices before heading to the airport.
“If a battery is bulging, swelling, changing shape, overheating or showing any other signs of damage, don’t take the risk. Instead, safely dispose of it as soon as possible at a local recycling centre with dedicated facilities for electronics and batteries and never put it in your general waste,” he said.
“Battery safety starts before you even step foot on an aircraft, starting with where you shop. When shopping for your summer getaway, the best way to protect yourself and those around you is to stick to a reputable high street retailer you know and trust to ensure your power bank or any other lithium-ion battery product you’re taking away with you is safe.”
