Fly with Power Banks
Power banks are batteries, and airlines treat loose batteries more strictly than the devices they charge. The good news: most everyday power banks fly fine in your carry-on. This guide covers the watt-hour limits, where to pack them, and what to do if security questions yours.
TL;DR / Quick Fix
Quick fix: power banks fly in your carry-on, never in checked baggage. Most airlines allow batteries up to 100Wh without approval — check your bank's label for the number. Keep it switched off in the cabin, and skip giant high-capacity bricks unless you have airline approval first.
Follow these steps
- Find your power bank's watt-hours. Check the label for Wh — it is often printed next to the voltage and capacity. Most phone-sized banks are 10,000-20,000 mAh, which is roughly 37-74 Wh, well under typical limits.
- Know the common limit: 100Wh. Most airlines allow batteries up to 100Wh in carry-on with no approval. Between 100Wh and 160Wh usually needs airline permission, and above 160Wh is generally banned from passenger flights.
- Pack it in your carry-on only. Spare batteries are forbidden in checked baggage because a damaged battery in the hold cannot be reached. Keep your power bank in the bag you take into the cabin.
- Protect the terminals. Keep the power bank in a case or with its ports covered so metal objects cannot short it. A rubber band around it plus a pouch is enough for most banks.
- Switch it off if it has a power switch. Some larger banks have an on-off switch — turn it off for the flight. For ordinary banks with no switch, just do not plug anything in during takeoff and landing.
- Check your airline before flying big. Rules vary by airline and country, and they change. If your bank is large or unusual, check the airline's battery page before you leave — two minutes of reading beats a confiscation at security.
What NOT to do
- Do not pack spare power banks in checked luggage — this is the rule most often enforced at the gate.
- Do not assume one airline's rules match another's. Budget carriers can be stricter than you expect.
- Do not travel with a swollen or damaged battery. A damaged battery is a fire risk and a confiscation certainty.
- Do not argue with security about the rules. Their decision at the checkpoint is final, whatever the website said.
Frequently asked questions
Can I use my power bank during the flight?
Usually yes, once airborne — most airlines allow charging devices in flight. Follow crew instructions; some airlines restrict battery use during takeoff and landing.
What about power stations, not banks?
Large portable power stations often exceed 160Wh and are banned from passenger flights. They ship as cargo instead — check the specs before you even try.
My bank's label is worn off. What do I do?
If security cannot read the rating, they may confiscate it. Replace illegible banks before flying, or carry the product page showing the watt-hours on your phone.