United Airlines Power Bank Rules 2026: What united.com Says

Can you bring a power bank on United? Yes, in the cabin, and the page says less than you would expect

United’s dangerous-items tool is precise about checked bags and gate checks, and silent about almost everything else that Delta and American now spell out: no count for power banks, no rule on using one in flight, no word on the overhead bin. Where United says nothing, the international baseline fills the gap, and this page tells you which is which.

How this page was built. VoyageHacks read the “Batteries”, “Smart bags” and “Recalled items” categories of United’s dangerous-items tool on 16 September 2026 and quotes them directly below, alongside the FAA PackSafe rule and IATA’s 31 March 2026 operator guidance. Where United publishes nothing on a point, the page says so. All 38 carriers are compared in power bank rules by airline.

United’s power bank rules in one table

What United’s page says, word for word

Read on 16 September 2026 from the dangerous-items tool:

• “We allow personal devices that have lithium batteries in checked and carry-on bags. They must be less than 100-watt hours.”
• “Carry-on bags: We allow up to two lithium batteries with a max of 160 watt-hours.”
• “Checked bags: We do not allow: E-cigarettes or personal vaporizers; Power banks (including those installed in smart bags); Loose lithium batteries.”
• “If you decide to check your carry-on bag at the gate, you must remove any lithium batteries and power banks.”
• “Recalled, damaged or defective batteries aren’t allowed on the plane.”
• “You must separate loose lithium batteries. Place each battery in its own cover. You can use the original retail packaging, plastic bags, or protective pouches. You can also insulate the batteries by taping over exposed terminals.”
• “Smart bags usually have an integrated lithium battery to power its features. The battery must be removable. Take it out before checking your bag or bringing it on board.”
• “Rideable or motorized suitcases are not considered smart bags. You can not check or carry on any suitcase that is designed to be used like a vehicle.”

Is your power bank under 100Wh? United’s own conversion

United gives the arithmetic in two steps: (mAh) ÷ 1,000 = (Ah), then (V) x (Ah) = (Wh). Power banks run at a nominal 3.7 volts, so the one-line version is Wh = mAh x 3.7 / 1,000.

United’s page does not say whether a 30,000mAh power bank counts as a “device” (under 100Wh) or a “spare lithium battery” (up to 160Wh). Delta and American have both removed that ambiguity by capping power banks at a flat 100Wh, and IATA removes it for everyone on 1 January 2027. Buy under 100Wh and the question never comes up.

The gate-check rule is the one United enforces

Full flights on United mean gate-checked roller bags, and United’s page is unambiguous: any lithium batteries and power banks come out of the bag first. The FAA writes the same rule. Agents at the gate will ask.

So the practical order of operations at a United gate is: bank into your jacket pocket or personal item, then hand over the roller bag. If the bank is buried at the bottom of the roller bag, you will be unpacking it in the jet bridge.

Smart bags follow the same logic. United accepts one with a removable battery, taken out before the bag is checked or brought on board, and refuses any suitcase “designed to be used like a vehicle”.

Using a power bank on a United flight

United publishes nothing on this, which is unusual among the US majors: Delta bans use during taxi, take-off and landing, American allows use if the bank is visible, and Southwest allows use if the bank is out of the bag.

The ICAO addendum of 27 March 2026 fills United’s silence. It requires that a power bank is not recharged on board and recommends that it is not used to charge a device. On a United flight, the defensible position is the strict one: charge your phone from the seat’s own USB port, keep the bank in the seat pocket or the bag under the seat rather than in the overhead bin, and stop if a flight attendant asks. United’s page points to two countries where that is law rather than advice: South Korea, where in-flight use and charging have been banned since 26 January 2026, and Japan, where the MLIT rule of 24 April 2026 bans both.

Recalled power banks: the two United names, and the rest

United’s recalled-items category lists three things you cannot fly with: the Ubio Power Bank, the VRURC OBO_B7 Portable Charger and 2015 to 2017 MacBook Pro laptops. It then defers to the FAA’s list, and the FAA’s rule covers every recalled battery, in carry-on or checked bags.

The A1689 is the Anker Zolo 20,000mAh 30W USB-C model, which Air Canada bans by name on its own page. The three banks in the grid above are A1259, A1383 and A1340, none of which is recalled as of 16 September 2026.

How United compares with Delta, American and Southwest

Connecting onto a Star Alliance partner? Lufthansa bans any use of a power bank in flight and requires it out of the overhead locker, and Air Canada requires an airport agent’s approval above 100Wh. The stricter leg sets what you pack.

What changes on 1 January 2027

IATA’s operator guidance of 31 March 2026 states that the provision allowing 100 to 160Wh power banks with airline approval “will not be carried into the 68th edition” of the Dangerous Goods Regulations, in force from 1 January 2027. From that date the ceiling for a passenger’s power bank is a flat 100Wh everywhere, which resolves the device-or-spare question on United’s page: a 30,000mAh bank will not fly as either.

Before you fly United: the 60-second check

1. Read the Wh. Under 100Wh, no questions. Only mAh printed? mAh x 3.7 / 1,000.
2. Check the model against the recall table above, including the two United names.
3. Pouch or tape the terminals if the bank has exposed contacts.
4. Bank in your pocket before the gate. If the roller bag is gate-checked, the bank cannot be in it.
5. Charge from the seat port, not the bank, and keep the bank within reach.
6. Japan or South Korea? No use or charging in flight, by law.

United’s fares, bag fees and cabins are covered in our United review. For a bank that passes every carrier’s rule, see best travel power banks, and for all 38 airlines side by side, power bank rules by airline.

Frequently asked questions

How many power banks can I bring on United?

United publishes no separate count for power banks. Its dangerous-items page allows personal devices with lithium batteries under 100Wh in checked and carry-on bags, and up to two spare lithium batteries with a maximum of 160Wh in carry-on bags. Power banks are named only in the checked-bag ban and the gate-check rule. ICAO’s baseline of two power banks per passenger, effective 27 March 2026, applies on top of United’s page, and it is the number to pack to.

Can I use a power bank during a United flight?

United’s dangerous-items page publishes no rule on using or recharging a power bank in flight. The ICAO addendum of 27 March 2026 requires that a power bank is not recharged on board, and recommends that it is not used to charge a device, so the safe reading on United is to charge your phone from the seat’s own USB port and keep the bank within reach. If crew ask you to stop using it, that instruction is the rule.

Can a power bank go in a checked bag on United?

No. United’s page lists power banks, including those installed in smart bags, among the items it does not allow in checked bags, alongside loose lithium batteries and e-cigarettes. The same page adds that if you decide to check your carry-on bag at the gate, you must remove any lithium batteries and power banks. On a full flight that gate check happens in the jet bridge, so move the bank to your pocket before you get there.

What is United’s watt-hour limit for power banks?

United states that personal devices with lithium batteries must be less than 100 watt-hours, and that carry-on bags may hold up to two lithium batteries with a maximum of 160 watt-hours. It publishes no separate tier for power banks. United gives the conversion on its page: volts x amp-hours = watt-hours, and mAh divided by 1,000 = amp-hours. A 10,000mAh bank is about 37Wh, a 20,000mAh bank about 74Wh, and 27,000mAh is about 100Wh.

Which recalled power banks does United name?

United’s recalled-items list names the Ubio Power Bank and the VRURC OBO_B7 Portable Charger, alongside 2015 to 2017 MacBook Pro laptops, as items you cannot fly with because they have been recalled, and states that recalled, damaged or defective batteries are not allowed on the plane. The FAA’s rule is broader and covers every recalled battery, so check your model number against the CPSC list, which includes seven Anker models, the INIU BI-B41 and two Baseus units.

Does United have different power bank rules for Japan and South Korea?

Yes, and its page points to both. For flights to or from Japan, United refers passengers to the Japanese Ministry of Land, Infrastructure, Transport and Tourism, whose rule of 24 April 2026 allows two power banks of 160Wh or less and bans using or charging them in flight. For South Korea, United links its own rules page: in-flight use and charging have been banned there since 26 January 2026, with fines for non-compliance.

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