An electric toothbrush is a small device with a battery in it, and that is the part that matters at an airport. The brush itself is harmless. The question is how to pack the battery, the handle and the charger so that nothing switches on, gets crushed or gets pulled out of your bag at the gate.
This guide uses the US Federal Aviation Administration’s PackSafe guidance on lithium batteries as its reference. What we add on top, including the checklist, is our own suggestion. It does not replace your airline’s rules.
What the FAA says
The FAA’s PackSafe pages set out the rules for lithium batteries in baggage. In summary:
- Devices with lithium batteries should be carried in carry-on baggage, because flight crews are trained to recognise and respond to lithium battery fires in the cabin. If they go in checked baggage they must be completely powered off and protected to prevent unintentional activation or damage.
- Spare lithium batteries, including power banks and portable chargers, must be carried on and cannot be checked. They must be protected from damage and short circuit, and if your carry-on is checked at the gate they must be taken out and kept with you in the cabin.
- Damaged, defective or recalled lithium batteries must not go in either carry-on or checked baggage.
- Many airlines may set stricter limits than the FAA on spare batteries and power banks, so check with yours.
The FAA pages are written around laptops, phones, tablets, cameras and power banks. We did not find them naming toothbrushes, so we are applying the battery rules by type. If your brush has a built-in lithium-ion battery, those rules describe it. If it takes ordinary replaceable batteries, the manual and your airline are the guide.
Carry-on or checked?
| Question | Carry-on | Checked bag |
|---|---|---|
| Brush with a lithium battery | Fits the FAA wording | Only if completely powered off and protected |
| Spare lithium battery or power bank | Required place | Prohibited |
| Charger and cable | Fine for most airlines | Fine, but you may need it on arrival |
| Brush heads | Fine | Fine |
| Toothpaste | Counts as a liquid or gel for carry-on; see our oral care on a flight guide | Fine |
Our suggestion is to carry the brush, charger and any spare battery together in your cabin bag. That keeps the rule simple and keeps the brush within reach for a long journey.
Switch off, then check it is off
The FAA wording about unintentional activation matters most for a toothbrush, because a button press in a bag is easy to cause. Before packing:
- Turn it off and wait a second. Make sure the motor is not running.
- Use the travel lock if it has one. Some models have a travel lock or travel mode. Check your manual for how yours works.
- Put it in a case where the button cannot be pressed, such as a rigid tube or a hard case.
- Pack the charger separately from the brush so a plug or cable cannot press the button.
Keep it dry and clean
A damp head in a closed case invites smells. Dry the head and handle with a clean cloth, let the head air-dry for a few minutes if you can and then close the case. Our guide to packing a damp brush in a travel case goes through the details, and the travel oral-care kit checklist lists everything else for the bag. If you also travel with a water flosser, see the travel water flosser checklist.
Rain is worth a thought as well. A brush case in a damp outer pocket next to a wet umbrella is how a charger ends up soaked. Put the wet umbrella in its own bag or a sleeve, and keep the case in the main compartment.
Before you go: a short checklist
- Check the manual for the battery type and any travel lock.
- Carry the brush, charger and spares in your cabin bag.
- Protect spare batteries from damage and short circuit.
- Switch the brush off fully and put it in a rigid case.
- Pack a manual toothbrush as a backup in case the battery runs flat. Our electric vs manual toothbrush guide helps you choose one.
- Check your airline’s own limits, and the rules of the countries you are flying to.
A note on the umbrella
For openness: Calm Eden, which sells the umbrella below, has the same owner as FlosserGuide. The Haven Umbrella folds to 40 cm (15.75 in), weighs about 390 g and opens and closes with one press, and a swivel carabiner handle lets it clip to a bag. Those figures come from the listing, and nothing about packing a toothbrush depends on an umbrella. If you carry one through a wet airport, Calm Eden’s guide to carrying an umbrella on a plane covers the rules.
In short
- Lithium devices and spares belong in carry-on.
- If a brush is checked, it must be completely powered off and protected.
- Switch off, lock, case, and keep the charger apart.
- Check the airline, not just the FAA.
Sources: Federal Aviation Administration, PackSafe: portable electronic devices containing batteries and airline passengers and batteries, read on 25 October 2026. The packing checklist is our own. This guide is general information, not dental or aviation advice; check your airline and airport before you travel.
Common questions
Can I take an electric toothbrush in my carry-on?
Yes. The FAA's PackSafe guidance says devices containing lithium batteries should be carried in carry-on baggage, and gives the reason: flight crews are trained to recognise and respond to lithium battery fires in the cabin. That is also the simplest way to avoid the rules about checked bags. Check your airline for anything stricter.
Can I put an electric toothbrush in checked luggage?
The FAA says portable electronic devices powered by lithium batteries in checked baggage must be completely powered off and protected to prevent unintentional activation or damage. Carry-on is the safer choice for a brush you cannot be sure will stay off.
Can I pack a spare battery or power bank for it?
Spare lithium batteries, including power banks and portable chargers, must be carried on and cannot be checked, according to the FAA. It also says spare batteries must be protected from damage and short circuit, and that if a carry-on is checked at the gate, spare batteries must be taken out and kept with you in the cabin.
Does it matter what battery my brush has?
Yes. The FAA's rules are written for lithium metal and lithium-ion batteries. A model that takes ordinary replaceable batteries is a different case, so read the manual and the label for the battery type before relying on any rule.
How do I stop the brush switching on in my bag?
Use the travel lock or travel mode if your brush has one, and otherwise pack it in a case where the button cannot be pressed. The FAA's wording about protection from unintentional activation is the reason to take this seriously. Check your own model's manual for how its lock works.
Found a source that changes the advice? Send the article URL and supporting information to hello@flosserguide.com. We welcome corrections.