Can You Take a Power Bank on an Airplane? Rule Explained

Power banks have become a travel essential, especially if you’re relying on your phone for boarding passes, maps, or just killing time with a bit of Netflix at the gate. But when it comes to packing your tech for a flight, you might be asking yourself: can you take a power bank on an airplane?

The short answer is yes, you can, but there are a few important rules you need to know before you toss one in your bag. This guide breaks down what’s allowed, how to stay within the rules, and which power banks are best for air travel.

Can I Take a Power Bank on an Airplane?

So, are power banks allowed on airplanes? The answer is yes, but only if they meet certain rules. In the UK, as with most countries, power banks are treated as spare lithium-ion batteries, which means they must go in your hand luggage, not in your checked baggage.

This is due to safety concerns—if a battery overheats or catches fire, it’s much easier to deal with in the cabin than in the hold.

What size is allowed?

The key thing to check is the capacity of your power bank, which is usually listed in milliampere-hour (mAh) or watt-hours (Wh). Most airlines follow the international guidelines set by IATA (the International Air Transport Association). For 2026, the safest rules for passengers are:

• Carry no more than two power banks.
• Make sure each is 100Wh or less.
• Keep them in carry-on baggage only.
• Do not recharge them during the flight.

Your bank only shows mAh? Converting from mAh to Wh is quick math:

Wh = (mAh ÷ 1,000) × V

Just divide the mAh by 1000 to get Ah, then multiply by the voltage (usually 3.7V).

For example: (20,000mAh ÷ 1000) × 3.7 = 74Wh

So, if you have a 20,000mAh battery pack, it’s well under the limit.

Things to Know About Power Banks for International Travel

If you’re flying internationally, assume the stricter 2026 baseline applies unless your airline clearly says otherwise. For passengers, that means carry-on only, maximum two power banks, each 100Wh or less, with no recharging during the flight.

It is also a good idea to keep the battery rating visible or easy to calculate. If the watt-hour rating cannot be determined, some airlines may refuse carriage. British Airways says that if the Wh rating is not shown or cannot be determined, the battery cannot be accepted onboard.

Because UK government guidance says airline restrictions may differ, travellers should always check the operating carrier’s latest page before departure, especially on international itineraries or connecting flights.

Extra Tips for Air Travel with Power Banks

Once you’ve covered the basics, a few simple steps can make travel easier and safer.

Pick the right size

While it might be tempting to go for the biggest capacity possible, most of us don’t need more than 10,000–20,000mAh. These are compact, lightweight, well under the 100Wh threshold, and enough to charge your phone two or three times, ideal for airport delays or long-haul flights.

Buy from trusted brands

To stay safe (and avoid delays at security), choose power banks that are CE, UKCA, or UL certified. There have been incidents involving cheap or counterfeit models that didn’t meet safety standards.

Insulate the terminals

To avoid short circuits, tape the charging ports or place the power bank in a padded case or pouch. This is especially important if you’re carrying spares. Loose batteries can be dangerous if they come into contact with metal objects like keys or coins.

Keep it accessible

Store your power bank somewhere easy to reach, like the top of your carry-on or a front pocket. That way, you can take it out quickly at security or plug in without rummaging around mid-flight. Do not put it in the overhead locker.

Follow in-flight charging rules

ICAO’s 2026 change prohibits recharging power banks during flights, including from onboard USB or seat power.

Recommended Power Banks for Air Travel

Shopping for something new? Here are three reliable power banks from Anker that stay well under the airline limits, slip easily into a bag, and add handy extras—whether that’s a built-in cable, MagSafe-style snap-on charging, or a clever stand for in-flight streaming.

Anker Nano Power Bank (10,000mAh, built-in USB-C cable)

Small enough for a coat pocket yet powerful enough to fast-charge a phone or tablet, the Anker Nano Power Bank pairs a 10,000 mAh cell (37Wh) with 30W bi-directional USB-C charging—that’s quick enough to boost an iPhone 14 to 50 % in around 30 minutes and then refill the bank itself just as fast.

At 215g and 104 × 52 × 26 mm, it’s lighter than most 30W bricks you’d pack anyway. The integrated USB-C cable doubles as a loop handle, and a colour screen shows remaining power at a glance. All that sits well below airline limits, so you can toss it straight into hand luggage without extra paperwork.

What’s good:

• Built-in USB-C cable means one less lead to remember
• 30W input/output for brisk top-ups on phones, tablets or even a MacBook Air
• Clear colour display for battery-percent and charging speed
• Compact 215 g shell fits jeans or seat-back pockets

Anker MagGo Power Bank (10,000mAh, Qi2/MagSafe-compatible)

If you’d rather skip the cables entirely, the Anker MagGo Power Bank 10K is one of the first banks to earn Qi2 certification, giving MagSafe-style 15W magnetic wireless charging that’s twice as quick as older Qi pads. Snap it onto the back of your iPhone, and you’re ready to go.

A fold-out stand props up your phone for films on long-haul flights, while a 27W USB-C port lets you top up tablets or Nintendo Switch at the gate. Despite the extras, it still weighs a flight-friendly 250g and carries only 37Wh, so no approvals needed.

A smart OLED screen shows the pow

er bank’s battery level and charging status at a glance—so you know exactly how much juice you’ve got left before take-off.

What’s good:

• Certified Qi2 magnetic wireless charging, full 15W speed for iPhone 12-16 series
• Built-in stand for hands-free video on the tray table
• 27W USB-C port covers wired gadgets too

Anker 622 Magnetic Battery (MagGo, 5,000mAh)

Travelling ultra-light? The Anker 622 Magnetic Battery snaps straight to the back of an iPhone with 9N magnets and folds out into a stand for binge-watching in Economy. Its 5,000mAh capacity is lower than others, but it’s enough to give your phone a decent top-up when you’re in a pinch.

It charges wirelessly at 7.5W, and its slim design (only 12.8 mm thin) makes it easy to slide into a jacket pocket or small travel pouch. The system protects your phone and battery from overheating and overcharging, and you can recharge the power bank easily with USB-C.

What’s good:

• Slim magnetic wireless charging design that rides on the phone—no cable clutter
• Fold-out kickstand for portrait or landscape viewing
• Lightest pick here, easily pocketable

Anker Prime Power Bank (20K, 220W)

For travellers who need high output on the go, the Anker Prime Power Bank (20K, 220W) combines strong charging performance with a flight-ready battery size. It features a 20,100mAh / 72.36Wh capacity, making it suitable for hand luggage, plus 220W total output shared across two USB-C ports and one USB-A port for charging multiple devices at once.

With up to 140W fast charging, it can power demanding devices like laptops, tablets, and phones while travelling. It also supports 100W max recharging, so you can top it up quickly before heading out. For frequent flyers who want one compact power bank for work and travel, this is a strong all-round option.

What’s good:

• 20,100mAh / 72.36Wh stays within the usual hand-luggage limit.
• 220W shared across three ports for charging multiple devices.
• Up to 140W output for powering more demanding devices on the go.

Conclusion

To wrap it up: can you take a power bank on an airplane? You sure can, but only if you follow the rules. Keep it in your hand luggage, check the capacity limits, and always double-check your airline’s policy just to be safe. Travelling with a power bank doesn’t need to be complicated. With a bit of planning and the right portable charger, you’ll breeze through security and stay powered up the whole way.

FAQs

Is a power bank allowed in carry-on?

Yes. Power banks are usually allowed in carry-on only, not checked baggage. For 2026, the safest rule is to bring no more than two power banks, each 100Wh or less, and to check your airline’s latest guidance before travel.

Can I use my power bank while flying?

You may be allowed to carry a power bank in hand luggage, but under updated 2026 guidance you should not recharge the power bank during the flight, and some airlines may also restrict when it can be used to charge other devices. Always follow crew instructions and your airline’s latest rules.

Can I bring a 50,000mAh power bank on a plane?

No. A 50,000mAh power bank is usually around 185Wh, so it exceeds normal passenger limits and cannot be taken in carry-on or checked baggage. If accepted at all, it would need to move through a regulated cargo process, not as normal passenger luggage.