Can You Take a Power Bank on a Plane? (2026 TSA Rules)

The short answer is yes, you can take a power bank on a plane, but you must carry it in your carry-on luggage and it must usually be under 100 watt-hours (Wh) in capacity.

Traveling in 2026 means carrying an array of devices smartphones, tablets, laptops, and perhaps even a Nintendo Switch or a Steam Deck. Keeping these devices juiced up during a long-haul flight is a priority, but lithium-ion batteries represent a unique safety hazard in aviation. Because of this, the Transportation Security Administration (TSA), the Federal Aviation Administration (FAA), and international bodies like the International Air Transport Association (IATA) have strict regulations governing how you transport portable chargers.

In this comprehensive guide, we will break down everything you need to know about flying with power banks, from calculating watt-hours to understanding why your checked bag might be pulled aside if you leave a battery inside. We’ll also explore the nuances of international travel, the specific needs of power-hungry devices like gaming consoles and laptops, and how to read the fine print on your battery’s labels to ensure you never face a stressful moment at security.

The Science of Battery Safety: Why Airlines Are So Strict

To understand the rules, it helps to understand the science. Lithium-ion batteries store a significant amount of energy in a very small space. They achieve this using a liquid or gel electrolyte that is, unfortunately, highly flammable. If a battery is physically crushed, punctured, or subject to an internal short circuit, the energy stored within can be released all at once as heat.

This process, known as thermal runaway, is difficult to stop once it begins. The heat from one cell in a battery pack can trigger the cell next to it, leading to a chain reaction. In the cabin of a plane, a smoking battery is a serious event, but it is one that the cabin crew is trained to handle using specialized “lithium battery fire bags” and water (which cools the battery and stops the chain reaction). In the cargo hold, however, the automatic fire suppression systems use Halon gas, which can extinguish a regular fire but is often ineffective against the self-oxidizing nature of a lithium battery fire. This “fire-in-a-box” scenario is the nightmare that aviation authorities work tirelessly to prevent.

TSA Rules and Watt-Hour (Wh) Limits

The primary rule you need to remember is the 100 watt-hour (Wh) limit. According to TSA and FAA guidelines, lithium-ion batteries with a capacity of 100Wh or less can be carried in carry-on baggage without any special approval.

Why is there a limit?

Lithium-ion batteries are “dangerous goods” because they can catch fire if they short-circuit, are damaged, or have a manufacturing defect. This is known as “thermal runaway.” In the pressurized cabin of an airplane, a fire can be detected and extinguished by the crew. In the cargo hold (checked baggage), a fire could go unnoticed and spread quickly, potentially leading to a catastrophic event. This is why the capacity is capped and the location is restricted.

The 100Wh to 160Wh Exception

If you have a particularly large power bank (often used for high-end laptops), you might find it falls between 101Wh and 160Wh. Most airlines will allow you to carry up to two of these larger batteries, but only with prior airline approval. If your battery exceeds 160Wh, it is strictly prohibited from passenger aircraft altogether and must be shipped via cargo-only flights.

Carry-on vs Checked Baggage Rules

This is the rule that causes the most confusion and leads to the most confiscated items at the airport: Power banks must NEVER be placed in checked luggage.

Carry-on Baggage: Permitted (and required). This includes backpacks, purses, and “personal items” that stay with you in the cabin.
Checked Baggage: Strictly Forbidden. If you check a bag that contains a lithium-ion battery pack, airport security will likely open your bag to remove the item. In some cases, your entire bag may be held back from the flight.

What about “Smart Luggage”?

Many modern suitcases come with built-in power banks. The same rules apply: if you intend to check that suitcase, the battery must be removable. You must pop the battery out and carry it onto the plane with you. If the battery is non-removable, the suitcase itself is banned from the aircraft.

How to Calculate Watt-Hours (Wh) from mAh

Most manufacturers label their power banks in milliampere-hours (mAh), but airline regulations are written in watt-hours (Wh). This discrepancy can lead to a lot of stress at the security gate. Fortunately, the math is simple.

The formula to convert mAh to Wh is: (mAh × Voltage) / 1000 = Wh

Most power banks use internal lithium-ion cells with a nominal voltage of 3.7V.

Let’s look at some common sizes:

10,000mAh: (10,000 × 3.7) / 1000 = 37Wh (Well within limits)
20,000mAh: (20,000 × 3.7) / 1000 = 74Wh (Safe for travel)
26,800mAh: (26,800 × 3.7) / 1000 = 99.16Wh (Just under the 100Wh limit)
30,000mAh: (30,000 × 3.7) / 1000 = 111Wh (Requires airline approval)

If you are looking for more details on battery capacity terminology, check out our guide on What is mAh and how much do you need?.

Why Wh Matters More Than mAh

Manufacturers use mAh (milliampere-hours) as a marketing term because a bigger number like 20,000 sounds more impressive than a smaller one like 74. However, mAh is a measure of electric charge, not energy. Energy is measured in watt-hours (Wh), which takes the voltage into account.

Some high-end power banks might use different internal voltages or multi-cell configurations. For instance, a battery might claim 20,000mAh but use a 7.4V arrangement internally, which would double the watt-hours! Always look for the Wh rating printed on the label, as that is the number the TSA inspector will look for if they decide to inspect your gear.

Reading the “Fine Print” on Your Labels

Beyond the capacity, look for safety certification symbols. A reputable travel power bank should have at least one or more of the following:

UL (Underwriters Laboratories): A gold standard for safety in the US.
CE (Conformité Européenne): Indicates conformity with health, safety, and environmental protection standards for products sold within the European Economic Area.
FCC: Ensures the device doesn’t interfere with other electronics (crucial for aircraft).
RoHS: Confirms the device is free of specific hazardous materials.

If your power bank is a “no-name” brand from a random online marketplace and lacks these symbols, security is much more likely to view it as a risk and confiscate it.

Comparison Table: Common Power Bank Sizes

Capacity (mAh)	Approx. Watt-Hours (Wh)	Allowed in Carry-on?	Allowed in Checked?
5,000 mAh	18.5 Wh	✅ Yes	❌ No
10,000 mAh	37 Wh	✅ Yes	❌ No
20,000 mAh	74 Wh	✅ Yes	❌ No
26,800 mAh	99.2 Wh	✅ Yes	❌ No
30,000 mAh	111 Wh	⚠️ Airline Approval	❌ No
40,000 mAh+	148+ Wh	⚠️ Approval/Forbidden	❌ No

What Airlines Allow (International Rules)

While the TSA sets the rules for the United States, most international airlines follow the guidelines set by IATA.

Delta, United, American Airlines: Follow TSA rules (100Wh limit).
Emirates, Qatar Airways: Generally strict on the 100Wh limit and may limit the quantity of batteries (usually a maximum of 15 to 20 lithium batteries total per passenger, including those inside devices).
Ryanair / EasyJet: Strictly enforce the carry-on only rule.
Chinese Airlines: Air China and others are notoriously strict. They often require that the capacity be clearly printed on the battery’s exterior. If the label is rubbed off or unreadable, they will confiscate it, regardless of its actual size.

Tips for Traveling with Power Banks

To ensure a smooth transition through security and a safe flight, follow these best practices:

Check the Labels: Make sure your power bank has a clear, legible label showing the mAh or Wh capacity. If the text has faded, you might want to buy a new one before your trip to avoid confiscation.
Protect the Terminals: Prevent short circuits by keeping your power bank in a separate pouch or or by placing tape over the USB ports. You don’t want a stray coin or paperclip falling into the port.
Buy Quality Brands: Stick to reputable manufacturers like Anker, Belkin, or Baseus. These brands use high-quality cells and safety circuits that prevent overheating, which is exactly what airport security is looking for.
Keep it Accessible: You will likely need to take your power bank out of your bag during the X-ray screening process, similar to a laptop. Keep it in an easy-to-reach pocket.
Don’t Charge During Turbulence: While it’s generally safe to use your power bank in flight, it’s a good idea to unplug your devices during takeoff, landing, and heavy turbulence to avoid cable strain or accidental damage.

Recommended Travel-Friendly Power Banks

When choosing a power bank for travel, you want a balance of high capacity (to survive a long flight) and portability. Here are our top picks for 2026:

1. Anker 737 (PowerCore 24K)

With a capacity of 24,000mAh, this beast is right near the legal limit but falls safely under 100Wh. It can charge a MacBook Air or a flagship smartphone multiple times. It features a smart display that shows exactly how much time is left until it’s empty or full.

2. Baseus Blade 100W

If you are tight on space, the Baseus Blade is incredibly thin (about 0.7 inches). Its 20,000mAh capacity is well within TSA limits (74Wh), and it’s flat enough to slide into a laptop sleeve alongside your computer.

3. Anker MagGo 10K (Qi2)

For a more compact option, this 10,000mAh magnetic charger is perfect. It snaps onto the back of your iPhone or Qi2-compatible Android phone, so you don’t even have to mess with cables while you’re navigating a busy airport.

4. Omnicharge Omni 20+

For professional travelers, the Omni 20+ offers an AC outlet alongside its USB ports. At 71Wh, it’s completely airline-safe and can power specialized equipment like camera battery chargers or medical devices.

Powering the “Pro” Traveler: Laptops and Gaming Consoles

If you are traveling with a Steam Deck, ASUS ROG Ally, or a high-end MacBook Pro, you need a power bank that can output at least 60W to 100W via USB-C Power Delivery (PD).

A device like the Anker 737 is ideal here because it can output 140W, allowing you to charge your laptop at its maximum speed. Even though it’s powerful, its 86Wh capacity is still safely below the 100Wh TSA limit. When traveling with these power-hungry devices, we recommend keeping the power bank and the device in the same “personal item” bag to ensure you can quickly disconnect them if they begin to run warm during a fast-charge session.

For a deeper look at travel-specific options, read our specialized list of the Best Wireless Power Banks for Travel 2026.

Frequently Asked Questions (FAQ)

Can I put a power bank in checked luggage?

No. Lithium-ion batteries must be in carry-on luggage only. If they are in the cargo hold and catch fire, the plane’s automatic fire suppression systems are not designed to handle lithium fires.

What is the watt-hour limit for airlines?

The standard limit is 100Wh. Batteries between 100Wh and 160Wh require airline approval. Anything over 160Wh is prohibited.

Can I bring two power banks on a plane?

Yes. Most airlines do not have a strict limit on the number of power banks under 100Wh that a single passenger can carry, provided they are for personal use. However, some individual airlines may limit you to 2 or 3 large capacity units.

What happens if TSA finds my power bank?

If it’s in your carry-on and under 100Wh, they will likely just scan it and put it back. If it’s over 100Wh and you don’t have approval, or if it’s in your checked bag, it will be confiscated. In checked bags, the battery will be removed, and you’ll find a notice in your suitcase when you arrive at your destination.

Can I use my power bank during the flight?

Yes, you can use your power bank to charge your devices during the flight. Most airlines only request that you unplug devices during takeoff and landing for general safety reasons (preventing cables from being an obstruction during an evacuation).

Conclusion

Navigating the rules for traveling with power banks doesn’t have to be stressful. As long as you remember to keep your chargers in your carry-on bag and ensure they are under 100Wh (approx. 27,000mAh), you will have no trouble sailing through security.

Always check your battery’s label before you leave for the airport, and if you’re in the market for a new travel companion, stick to the best wireless power banks of 2026 to ensure you stay powered up wherever your journey takes you. Safe travels!