How do I find the capacity of my power bank?

Flip your power bank over and look for a number followed by 'mAh' (like 10000mAh or 20000mAh). It's usually on a sticker on the bottom or back. If you can't find it, check the original box or the manufacturer's website.

What does mAh and Wh mean?

They're just different ways to measure how much energy your power bank stores. Think of mAh as the size of the fuel tank, and Wh as how much fuel is actually in it. Airlines care about Wh -- but don't worry, our tool converts it for you automatically.

Can I put my power bank in my checked suitcase?

No, never. This is one rule that applies everywhere in the world, on every airline. Power banks must go in your carry-on bag -- the one you take into the cabin with you. If security finds one in your checked bag, they'll remove it and your bag could be delayed.

How many power banks can I bring?

For regular-sized power banks (under 100 Wh), most airlines let you carry several. For larger ones (100-160 Wh), you're usually limited to 2 and need airline permission. Some airlines like Emirates only allow 1 power bank per person, regardless of size.

Can I use or charge my power bank during the flight?

It depends on your airline. Many airlines (including Lufthansa, Singapore Airlines, and all South Korean carriers) now ban using or charging power banks during the flight. Others allow it but ask you to keep it visible. Check your specific airline using the tool above.

What if my power bank doesn't have a label?

You might have trouble at security. Many airports -- especially in China and India -- will confiscate power banks without readable labels. If your label has worn off, try looking up the specs online and bringing a printout or screenshot as backup.

What if my power bank is damaged or swollen?

Do not bring it on a plane. A swollen or damaged power bank is a fire risk. Dispose of it safely at a battery recycling point and get a replacement before your trip.

What are the rules for flights in China?

China has extra rules: your power bank needs a readable capacity label and a 3C certification mark (for Chinese-made batteries). You also can't use or charge it during the flight. Power banks without proper markings may be taken away at security.

Asian Airlines Now Ban In-Flight Power Bank Use (2026)

Back to Calculator

Updated: February 1, 2026

Asian Airlines Now Ban In-Flight Power Bank Use

If you're flying with Singapore Airlines, Cathay Pacific, or Thai Airways, you can still bring your power bank -- but you can't use it during the flight. Here's what happened and what it means for you.

Which Airlines Are Affected?

As of early 2026, these major Asian carriers have banned in-flight power bank usage:

Airline	What Changed	When
Singapore Airlines	No power bank use during flight	Late 2025
Cathay Pacific	No charging from power banks during flight	Late 2025
Thai Airways	No power bank use during flight	Early 2026

What Does "Banned In-Flight Use" Actually Mean?

It means:

You CAN still bring your power bank on the plane -- in your carry-on bag

You CANNOT plug your phone into it while you're on board

Your power bank must stay switched off for the whole flight

Keep it in your bag, not loose in the seat pocket

Think of it this way: your power bank travels with you, but it takes a nap during the flight.

Why Did They Do This?

These changes came after several lithium battery incidents in 2024-2025, including the Air Busan emergency landing in South Korea. The worry is that if a power bank overheats while it's buried under a blanket or wedged in a seat pocket, the crew might not notice in time.

By banning in-flight use, airlines eliminate the risk of unmonitored charging.

What Should You Do?

Charge your devices at the gate before boarding

Use the in-seat USB port if your plane has one

Bring a fully charged phone -- you won't be topping up mid-flight

Still pack your power bank in carry-on -- you'll want it at your destination

Other Asian Airlines to Watch

Several other carriers haven't banned usage yet but have added restrictions:

Korean Air, Asiana -- power banks must be visible during use

AirAsia -- limited to 1 power bank per passenger

IndiGo, SpiceJet -- must be stored in carry-on, not seat pocket

The trend in Asia is clearly toward more restriction, so check your airline before you fly.

Use our free checker to see the latest rules for your specific airline.

Sources

Check Your Power Bank

Use our free calculator to instantly check your power bank against 200+ airline policies.

Open Calculator