Can You Bring Power Banks on a Plane? (2026 Rules)
Power banks must be in carry-on — never checked luggage. Under 100 Wh needs no approval. 100–160 Wh requires airline permission. Over 160 Wh is banned.
Can You Bring Power Banks on a Plane?
Yes — but only in carry-on luggage. Power banks are generally prohibited from checked luggage under major lithium-battery rules. Under 100 Wh, you can usually carry one without airline approval; larger units have restrictions.
The Core Rule: Carry-On Only
This is the most important fact about flying with a power bank: it must be in your carry-on bag or on your person. No power bank, of any capacity, may be placed in checked luggage.
Why: Lithium-ion batteries can experience thermal runaway — a rapid, self-sustaining internal fire. In the passenger cabin, the crew can see smoke and respond with fire suppression equipment. In a pressurised cargo hold, a lithium fire may go undetected until serious damage occurs. That is why major airline dangerous-goods rules keep spare lithium battery packs out of checked baggage.
This rule is near-universal at commercial airports, but details can vary by jurisdiction or carrier. Confirm with your departure airport's security authority and airline if you are unsure.
Capacity Limits
Capacity is measured in watt-hours (Wh). Most power banks list Wh on the label. If yours only shows mAh, you can calculate it.
Formula: Wh = mAh x voltage / 1000
Most lithium-ion power banks run at 3.7V nominal. Example: 10,000 mAh x 3.7 / 1000 = 37 Wh.
| Capacity | Carry-On Allowed | Approval Needed |
|---|---|---|
| Under 100 Wh | Yes | No |
| 100–160 Wh | Yes | Airline must approve in advance |
| Over 160 Wh | No | Banned from carry-on and hold |
Common Power Banks by Wh Rating
| Power Bank Capacity | Approximate Wh | Status |
|---|---|---|
| 5,000 mAh | ~18.5 Wh | Fine, no approval |
| 10,000 mAh | ~37 Wh | Fine, no approval |
| 20,000 mAh | ~74 Wh | Fine, no approval |
| 26,800 mAh | ~99 Wh | Fine, right at the limit |
| 30,000 mAh | ~111 Wh | Needs airline approval |
| 40,000 mAh | ~148 Wh | Needs airline approval |
| 50,000 mAh+ | ~185+ Wh | Banned |
The Wh figure printed on the power bank label is authoritative. If the label says 99.9 Wh, that is under 100 Wh and requires no approval.
Quantity Limits
For standard power banks under 100 Wh, IATA does not set a fixed quantity cap — the limit is "a reasonable number for personal use," and individual airlines may impose their own cap (some use 2). The firm 2-unit maximum applies to the 100–160 Wh approval tier. When in doubt, treat 2 as a safe assumption and confirm on your airline's dangerous-goods page.
"Spare" means a battery not currently installed in a device. A phone with a built-in battery does not count against this limit. Only portable power banks and detachable batteries count.
If you carry 2 power banks and 2 spare laptop batteries, that is 4 spare batteries total — check your airline's policy before travel.
How to Get Airline Approval for 100–160 Wh Power Banks
Airlines that allow 100–160 Wh power banks (two maximum) typically require:
- Contact the airline before your trip — not at the gate.
- State the brand, model, and exact Wh rating.
- Most airlines confirm via email or note on your booking. Keep the confirmation.
Airline contact typically means the reservations line or the dangerous goods desk. Gate agents cannot grant approval on the day.
Airlines With Strict Enforcement
China Southern, Air China, Hainan Airlines: strictly enforce the 2-unit limit and have been known to remove oversized power banks at boarding gates in Chinese airports.
Emirates, Qatar Airways, Etihad: follow IATA rules closely. Power banks over 160 Wh have been confiscated at Middle Eastern hubs.
If you are connecting through a hub where you did not originate your flight, the connecting carrier's rules apply.
Practical Tips
- Keep your power bank in an accessible pocket of your carry-on — not buried inside.
- At some Asian airports, security may ask you to turn it on to verify it is functional (a dead power bank may be flagged).
- Buy a power bank that shows Wh on the label. Some budget units only show mAh — calculate before you travel.
- For long-haul trips, a 20,000 mAh (74 Wh) unit covers most travellers without any capacity concerns.
Summary
| Rule | Detail |
|---|---|
| Checked luggage | Prohibited — no exceptions |
| Carry-on, under 100 Wh | Allowed, no approval |
| Carry-on, 100–160 Wh | Allowed with airline pre-approval |
| Carry-on, over 160 Wh | Prohibited |
| Quantity limit | 2 per passenger (most airlines) |
| How to calculate Wh | mAh x 3.7 / 1000 |
Frequently asked questions
Can I put a power bank in my checked luggage?▾
No. Power banks are generally prohibited in checked luggage under major airline lithium-battery rules. Lithium batteries in the hold can cause undetected fires, so they should travel in carry-on or on your person.
How many power banks can I bring on a plane?▾
For power banks under 100 Wh there is generally no fixed IATA quantity cap, though individual airlines may set their own limit (some cap it around 2). The firm 2-unit maximum applies to the 100–160 Wh approval tier. Always check your airline's dangerous-goods page before travel.
Is a 20,000 mAh power bank allowed on planes?▾
Yes. A 20,000 mAh power bank at 3.7V is approximately 74 Wh — well under the 100 Wh limit. It is normally allowed in carry-on without special approval, though airline quantity caps can still apply.
How do I calculate Wh from mAh?▾
Multiply mAh by the battery voltage (usually 3.7V for lithium-ion) then divide by 1000. Example: 10,000 mAh x 3.7V / 1000 = 37 Wh. Most power bank labels show Wh directly.
Which airlines are strictest about power banks?▾
China Southern, Air China, and some Middle Eastern carriers enforce the 2-unit limit strictly and may weigh or measure power banks at the gate. Always keep your power bank accessible in your carry-on bag, not buried at the bottom.
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