If you are an airline passenger packing your bags to travel for the holidays, the Federal Aviation Administration (FAA) advises you to take a moment to check out the agencys Pack Safe website. There are many items that people use on a daily basis that are considered hazardous materials when packed to fly on a plane. Flyers should know that e-cigarettes, vaping devices, and spare lithium batteries should NOT be packed in their checked luggage. Spare lithium batteries the kind that are found in personal electronic devices and back-up charging devices can only travel in carry-on baggage.
Electronic devices powered by lithium batteries can catch fire if they are damaged or have exposed electrical terminals. Devices that smoke or catch fire are much easier to extinguish in the cabin than they are in the cargo hold. So, the FAA recommends that passengers keep cell phones and other devices nearby in the cabin, so they can quickly access them, if necessary.
However, even in carry-on baggage, spare lithium batteries should be protected from damage or short circuiting. Ensuring that the batteries are packed properly and are not touching or bumping something that could potentially cause them to spark. If batteries are not sealed in manufacturer packaging, the battery terminals should be protected by covering them with tape and placing them in separate bags to prevent short circuits.
Some of the other common toiletries that passengers may plan to pack, but that could be hazardous include: aerosol cans that may contain hair spray, deodorant, tanning spray or animal repellant; nail polish; artist paints; and glues.
For more detailed information about materials that should not fly, visit the FAAs Hazardous Materials Safety website.
To be on the safe side, when in doubt, just leave it out!