Why do they ask if you have batteries in your luggage?
Lithium batteries can produce dangerous heat levels, cause ignition, short circuit very easily, and cause inextinguishable fires. That's why renowned aviation authorities, including those in the USA, have banned lithium batteries when traveling.
People Also Ask
Checked Bags: NoSpare (uninstalled) lithium ion and lithium metal batteries, including power banks and cell phone battery charging cases, must be carried in carry-on baggage only.
Spare (uninstalled) lithium ion and lithium metal batteries, including power banks and cell phone battery charging cases, must be carried in carry-on baggage only. With airline approval, passengers may also carry up to two spare larger lithium ion batteries (101–160 Wh) or lithium metal batteries (2-8 grams).
Lithium batteries, which power everyday devices, can catch fire if damaged or if battery terminals are short-circuited. Devices containing lithium metal batteries or lithium ion batteries, including – but not limited to – smartphones, tablets, cameras and laptops, should be kept in carry-on baggage.
The battery voltage must not exceed 12 volts and the battery watt hour rating must not exceed 100 watt hours. Battery-powered equipment must be protected against accidental activation and the evolution of heat, and damage to the terminal posts.
Portable chargers or power banks containing a lithium ion battery must be packed in carry-on bags. For more information, see the FAA guidance on portable rechargers.
Damaged, defective or recalled lithium batteries must not be carried in carry-on or checked baggage if they are likely to be a safety concern by overheating or catching on fire.
Batteries Allowed in Checked Bags:Except for spare (uninstalled) lithium batteries, all the batteries allowed in carry-on baggage are also allowed in checked baggage; however, we recommend that you pack them in your carry-on bag whenever possible.
A: The bags are scanned for security, not specifically for lithium batteries. If you leave a lithium battery in your bag it will travel with you. It is safer for the battery to be in the cabin so that if a thermal runaway occurs the cabin crew can deal with it.
Spare (uninstalled) lithium ion and lithium metal batteries, including power banks and cell phone battery charging cases, must be carried in carry-on baggage only. With airline approval, passengers may also carry up to two spare larger lithium ion batteries (101–160 Wh) or lithium metal batteries (2-8 grams).
A flashlight that is less than 7 inches in length and is not classified as a tactical weapon can be brought on a plane through carry-on. You can bring any flashlight through checked luggage but you must carry lithium batteries with you in your carry-on bag.
Safety Razors: Because the razor blades are so easy to remove, safety razors are not permitted in your carry-on luggage with the blade. They're fine to pack in your carry-on without the blade. The blades must be stored in your checked luggage. The same applies for straight razors.
Are suitcases with chargers allowed on planes? Suitcases with chargers are allowed on planes as long as the battery is removable. For example, if your luggage comes with an external battery bank, you'll want to eject it before turning the baggage in.