Flying to Denver for a ski week, to Fairbanks for the northern lights, or to Green Bay for a December game? Bringing a heated vest makes sense, and heated clothing on a plane is allowed. What matters isn't the vest, it's the lithium battery. The FAA and TSA have clear rules for it, and your airline may add its own.
Short answer: Yes, you can bring heated clothing on a plane and even wear it. The lithium battery must go in your carry-on or stay on your body – never in checked bags. Under FAA rules, batteries up to 100 watt-hours are fine. Regular heated vest, jacket and glove batteries are well below that – but big tool batteries can go over.
Heated clothing on a plane: the core rules
The rules come from the FAA and TSA in the US and from EASA, the EU aviation safety agency, for flights in Europe. For heated clothing, four points matter:
- Batteries in your carry-on. Per the FAA, spare lithium batteries, including power banks, may only travel in carry-on bags. The TSA prohibits them in checked luggage. EASA says the same.
- Pull them if your bag gets gate-checked. If your carry-on ends up in the hold at the gate, the FAA says to take the batteries out first.
- The 100 Wh limit. The FAA limits lithium-ion batteries to 100 Wh each. For larger batteries above 100 Wh, the limit is two spares per person. EASA sets 100 Wh per device, or up to 160 Wh with airline approval.
- Short-circuit protection. Per EASA, power banks in carry-on bags must be protected against short circuits. The original case or taped-over terminals do the job.
Heated apparel brand ororo says the same on its product page: you may wear its heated vest on a plane, and because all its batteries are lithium, they must travel in carry-on.
Power bank or device battery?
Many heated clothing batteries have a USB port, so you can charge your phone with them. Technically, that makes them power banks. It matters, because EASA's bulletin SIB 2025-03 spells it out: power banks count as spare batteries, not devices.
EASA also recommends carrying power banks on your body and advises airlines to ban charging devices from power banks in flight. Whether an airline also restricts running a heated vest off such a battery isn't consistently defined. Airlines can set stricter rules of their own.
Our advice: keep the heat off during the flight and unplug the battery. You won't need it in the cabin anyway. Before you fly, check your airline's current rules on its website. They can be stricter than the FAA's.
How to check your battery's watt-hours
The FAA puts it simply: watt-hours = volts × amp-hours. Newer batteries print the Wh rating on the label. If yours only shows mAh, divide by 1,000 to get amp-hours.
Example: a 7.4V battery with 5,075 mAh has 7.4 × 5.075 = 37.5 Wh.
Here's how real batteries from our comparison stack up:
| Battery (product) | Voltage | Capacity | Energy | Under 100 Wh? |
|---|---|---|---|---|
| ororo B22A glove battery (Glasgow liner) | 7.4V | 2,000 mAh | 14.8 Wh | yes |
| Glovii sock battery (GQ3) | – | 2,400 mAh | 17.76 Wh (stated) | yes |
| Savior Heat glove battery (EH8 Pro) | 7.4V | 3,000 mAh | 22.2 Wh | yes |
| Gerbing 7V (Khione vest) | 7V | 3,400 mAh | 25.16 Wh (stated) | yes |
| DeWalt 20V MAX 1.5Ah (DCHJ066) | 18V nominal | 1,500 mAh | 27 Wh | yes |
| Venustas vest battery (M2118) | 7.4V | – | 36 Wh (stated) | yes |
| Milwaukee M12 3.0Ah | 12V | 3,000 mAh | 36 Wh | yes |
| ororo PD 5K (vests, jackets) | 7.4V | 5,075 mAh | 37.5 Wh | yes |
| Venustas jacket battery (W2168) | 7.4V | – | 72 Wh (stated) | yes |
| Makita LXT 18V 5.0Ah | 18V | 5,000 mAh | 90 Wh | yes, barely |
| Makita LXT 18V 6.0Ah | 18V | 6,000 mAh | 108 Wh | no |
Almost every heated clothing battery sits far below 100 Wh. The exception is big tool batteries. A Makita 18V 6.0Ah pack – used with the DCV202 vest or DCJ205 jacket – comes to 108 Wh. Under FAA rules, you can carry at most two such spares. For flights in Europe, EASA requires airline approval.
Some batteries are missing specs. ActionHeat doesn't list a voltage for its 10,000 mAh power bank. At the typical lithium-ion cell voltage of 3.6 to 3.7V, that would be about 36 to 37 Wh – but go by what's printed on the battery. When in doubt, check the label.
For more on the math and on runtime, see our guide to heated clothing battery life.
Insoles and socks with small batteries
Some heated insoles have the battery built into the sole. Glovii lists 6.66 Wh for the built-in battery of its GW2 insoles and 8.88 Wh for the external packs of its GW4U ski insoles. That's a fraction of the 100 Wh limit. Since you can't remove a built-in battery, carry-on is the simplest place for them. Your airline can tell you what applies to devices with built-in batteries in checked bags. Sock batteries are similarly small: Glovii lists 17.76 Wh for the GQ3.
Heated clothing on a plane: how to pack
- Turn batteries off and unplug them. Put them in your carry-on or leave them in an inside pocket of the garment you're wearing.
- Protect the terminals. Original case, a separate pouch or tape over the contacts.
- No batteries in checked bags. The vest itself can go in your suitcase; the battery can't.
- Check the label. If there's no Wh rating, work it out and note it down for screening.
- Check your airline's rules. Before every flight, even with an airline you know.
- Hand warmers count too. A rechargeable hand warmer usually doubles as a power bank, so the same rules apply.
Which heated gear travels best?
For air travel, pieces with their own small batteries are the easiest. A heated vest packs small and works under whatever jacket you wear at your destination. Heated socks have especially small batteries. Tool-battery gear is made for the job site, not your carry-on. The Warmth Finder shows which body zone to heat first once you land.
Frequently asked questions
Can you bring a heated vest on a plane?
Yes. ororo confirms its heated vests can be worn on board. The lithium battery must be in your carry-on or on your body. The vest itself, without its battery, can go in a checked bag. Keep the heat off during the flight unless your airline says otherwise.
Can I wear a heated vest through TSA?
Our sources don't include a TSA rule specifically about wearing heated clothing through the checkpoint. What the TSA does spell out: lithium-ion power banks belong in your carry-on and are banned from checked bags. The simplest approach is to switch the vest off, unplug the battery and have it in your carry-on, so you can show it if an officer asks.
Can heated clothing batteries go in checked luggage?
No. The FAA, TSA and EASA all prohibit spare lithium batteries and power banks in checked bags. The vest without its battery can go in your suitcase.
What's the watt-hour limit for batteries on a plane?
The FAA limits lithium-ion batteries to 100 Wh each; above that, you can carry at most two spares. In Europe, EASA allows up to 160 Wh with airline approval. Typical heated clothing batteries run about 15 to 72 Wh.
How do I convert mAh to watt-hours?
Divide mAh by 1,000 and multiply by the voltage. A 7.4V, 2,000 mAh battery has 7.4 × 2 = 14.8 Wh. Newer batteries print the Wh rating on the label.
Can I bring heated gloves in my carry-on?
Yes. Glove batteries are small – 14.8 Wh for the ororo liner, 22.2 Wh for Savior Heat's EH8 Pro. Unplug or switch them off and pack them in your carry-on. Models are compared on our heated gloves page.
Does every airline follow the same rules?
No. FAA, TSA and EASA rules set the framework, and airlines can be stricter – for example on the number of spare batteries or on using them on board. Check your airline's website before every flight.
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