Can You Bring a Power Bank on a Plane?
A power bank is one of the most useful travel gifts there is. But if you're giving one to someone who flies a lot, it helps to know the rules. Here's the short version, and the details behind it.
The short answer
Yes, in your carry-on. No, in your checked bag.
Power banks contain lithium batteries. In the US, the FAA says spare lithium batteries, including power banks, must go in carry-on bags, not checked luggage. That way, if one ever overheats, the crew can deal with it in the cabin.
If your bag gets gate-checked at the last minute, take the power bank out first.
The size limit: 100 watt-hours
Airlines care about a battery's energy in watt-hours (Wh):
- Up to 100 Wh: allowed in carry-on bags on most flights.
- 101 to 160 Wh: usually needs airline approval.
- Over 160 Wh: not allowed on passenger planes.
Most phone and laptop power banks fall well under 100 Wh.
How to work out watt-hours
Power banks are usually labeled in milliamp-hours (mAh). To convert:
Wh = mAh × volts ÷ 1,000
Most power bank cells run at about 3.6 to 3.7 volts. So:
- 10,000mAh is about 37 Wh
- 20,000mAh is about 72 to 74 Wh
- 26,800mAh is about 99 Wh, close to the limit
Many power banks print the Wh rating on the case. If it's there, use that number.
Tips for flying with a power bank
- Keep it in your carry-on, ideally in an outside pocket so it's easy to reach.
- Protect the ports. Don't let keys or coins touch the connectors.
- Don't charge it on the plane if your airline asks you not to. Some airlines limit using or charging power banks during the flight.
- Check your airline's page before you go. Rules can be stricter than the FAA's, especially outside the US.
What to look for in a travel power bank
If you're buying one as a gift:
- Capacity: 10,000mAh charges a phone two or so times; 20,000mAh can top up a laptop.
- Output: enough wattage for a laptop if they carry one, often 45W or more.
- Built-in cable: one less cord to pack.
- The maker's word on air travel: some listings say the power bank is approved for airline travel.
The bottom line: yes, in your carry-on, at 100 Wh or less
You can bring a power bank on a plane in your carry-on, as long as it's 100 Wh or less, which covers nearly all phone and laptop power banks. Never put it in checked luggage.
To see a 20,000mAh power bank compared with a passport wallet and noise-cancelling headphones, read our best Christmas gifts for travelers.