Can You Take an Electric Toothbrush on a Plane?
Share
Packing for a trip and wondering whether your electric toothbrush will make it through security? In almost every case it will. Whether you're flying across the Tasman, across the Atlantic or around the world, the rules come down to a few simple principles about batteries, packing and charging. This guide covers them all, plus how to keep your oral care routine low-waste on the road.
The Short Answer
Yes. Electric toothbrushes with built-in lithium-ion batteries are allowed on passenger flights, and the small battery inside is well within international limits. Pack it in your carry-on, switched off, in a case. Check your airline's own policy before you fly, because airlines and national regulators can be stricter than the international baseline.
How Airline Battery Rules Work Worldwide
Most countries base their passenger rules on guidance from IATA, the international airline industry body, which regulators and airlines then apply in their own way. In summary:
- Up to 100 Wh, installed in a device: allowed in carry-on. In checked baggage, IATA's guidance requires the device to be completely switched off (not in sleep mode), with some exceptions for very small batteries.
- Spare batteries and power banks: carry-on only, never checked. Protect the terminals from short circuit with the original packaging, tape or a pouch.
- 100 to 160 Wh: needs airline approval. This applies to things like larger camera and laptop batteries, not toothbrushes.
- Over 160 Wh: generally not permitted on passenger aircraft.
The Crescent Nest sonic toothbrush has a 1100mAh lithium-ion battery, which works out to only a few watt-hours, a small fraction of the 100 Wh threshold.
Rules by Region at a Glance
| Region / Body | Electric toothbrush | Key points |
|---|---|---|
| International (IATA) | Allowed, up to 100 Wh installed | Spare batteries and power banks in carry-on only; 100 to 160 Wh needs airline approval |
| United States (TSA / FAA) | Allowed in carry-on and checked bags | TSA recommends devices with lithium batteries go in carry-on; officers may ask you to switch the device on; toothpaste in carry-on must be 3.4 oz / 100 ml or less |
| Australia (CASA) | Allowed in carry-on or checked bags | Device must be fully switched off and protected from accidental activation; spare batteries in the cabin |
| New Zealand (Air New Zealand) | Allowed, up to 100 Wh installed | Spare lithium-ion batteries in carry-on only, protected from short circuit |
| Everywhere else | Almost always allowed | Check your airline and the aviation authority at your departure and arrival airports |
Carry-On or Checked Bag?
Carry-on is the better choice almost everywhere. If a battery ever malfunctions, crew can respond quickly when the device is in the cabin, it avoids rough handling in the hold, and it keeps your toothbrush with you if your checked bag is delayed. Security officers can also ask you to switch an electronic device on, so make sure it has some charge.
How to Pack Your Electric Toothbrush
- Switch it fully off so it can't turn on in your bag.
- Use a rigid case. It protects the brush head and prevents accidental button presses. Our bamboo travel case is designed for this.
- Charge it before you leave.
- Never fly with a damaged, swollen or overheating battery.
- Keep spare brush heads handy. A spare bamboo brush head weighs almost nothing.
Charging Abroad: Voltage, Plugs and USB-C
Many travellers worry about voltage converters and plug types. With a USB-rechargeable toothbrush, most of that goes away. The Crescent Nest sonic toothbrush charges over USB-C at 5V/1A, so you can use the same cable and charger you already carry for your phone, and a USB charger works on the 100 to 240V power found in most countries. You only need a plug adapter to fit the local sockets.
Better still, the battery lasts around 55 to 60 days from full to empty, so for most trips you can leave the charger at home entirely. If you do carry a power bank, remember it counts as a spare battery and must travel in your carry-on.
Toothpaste, Floss and Other Items
- Toothpaste: in carry-on, many countries limit liquids and pastes to 100 ml (3.4 oz) per container, packed in a clear bag. Larger tubes go in checked luggage.
- Floss: allowed in carry-on. Some travellers prefer a refill spool to save space; see our PFAS-free floss guide for what to look for.
- Tongue scraper: a stainless steel scraper is a simple, solid object that travels well. Many people like using one after a long flight; see Tongue Scraping 101.
Build a Low-Waste Travel Kit
A complete oral care routine on the road doesn't need single-use plastic:
- Your sonic toothbrush with a spare bamboo head
- A stainless steel tongue scraper
- Bamboo charcoal floss in its refillable jar or a refill spool
- A bamboo travel case to keep everything together
Prefer a ready-made option? The Travel Ready Set brings these together. For more ideas on packing with less waste, see Travel Lighter, Brush Smarter.
Travel Tips for Different Trips
Long-haul flights
Brush before you board and again on arrival. A fully charged brush will last well beyond the flight, so there's no need to recharge in the airport.
Backpacking and camping
Battery life matters most here. With weeks of use per charge, a sonic brush is practical where power outlets are scarce. Keep it in a case to protect it from knocks and moisture.
Business trips and carry-on only
A compact case, a spare head and a tongue scraper add very little weight. Pack toothpaste in a 100 ml container to stay within carry-on liquid limits.
Hotels and shared bathrooms
Store your brush upright in its case and let the head dry fully between uses. See our guide to caring for your bamboo sonic toothbrush.
FAQs
Can you take an electric toothbrush in hand luggage?
Yes. Switch it off and protect it from accidental activation. Carry-on is the recommended place for any device with a lithium-ion battery.
Can an electric toothbrush go in checked luggage?
Usually, if the battery is installed and the device is fully switched off. Carry-on is safer, and your airline's rules apply.
Is an electric toothbrush battery under the 100 Wh limit?
Yes. The Crescent Nest sonic toothbrush has a 1100mAh lithium-ion battery, only a few watt-hours, far below the 100 Wh threshold.
Do I need a voltage converter for my electric toothbrush overseas?
Not for a USB-C rechargeable brush. A standard USB charger handles 100 to 240V, so you usually just need a plug adapter for the local sockets.
How long does the battery last?
The Crescent Nest sonic toothbrush lasts around 55 to 60 days from full to empty, so most trips don't need a charger.
Are spare batteries or power banks allowed?
Spare lithium batteries and power banks must go in carry-on only and be protected against short circuit.
Can I take toothpaste on a plane?
Yes, in carry-on it's usually limited to 100 ml (3.4 oz) per container. Larger tubes go in checked luggage.
Airline and airport rules vary by country and change over time. Always check your airline and the aviation and security authorities for your departure and arrival airports before you travel.
