Power bank rules for flights: mAh, Wh and what's allowed
Can you carry a power bank on a flight from India? Cabin-only rules, the 100 Wh limit, converting mAh to Wh, and what capacity to buy for travel.
By TravelGearly Editorial TeamUpdated
Quick answer
Power banks are allowed only in cabin baggage — never in checked bags. Under international guidelines followed by most airlines, power banks up to 100 Wh are allowed without approval, 100–160 Wh need airline approval, and over 160 Wh are not allowed. A 20,000 mAh power bank is about 74 Wh. Some airlines also restrict using power banks on board.
Almost every traveller carries a power bank, and almost every airline has rules about them. Here’s what applies, how to read the numbers on yours, and what size makes sense for travel.
Airline policies change. Treat this as a guide and check your airline’s current rules before flying.
The short version
| Rule | Details |
|---|---|
| Where | Cabin baggage only. Never in checked bags. |
| Up to 100 Wh | Generally allowed without approval |
| 100–160 Wh | Usually needs airline approval; quantity limits apply |
| Over 160 Wh | Not allowed on passenger aircraft |
| In use | Some airlines ban using or charging power banks on board |
| Condition | Damaged, swollen or recalled batteries are not allowed |
These limits come from international dangerous-goods guidelines that most airlines, including Indian carriers, follow.
How to convert mAh to Wh
Airlines use watt-hours; power banks usually advertise milliamp-hours.
Wh = mAh × voltage ÷ 1,000, using the cell voltage (usually 3.7 V).
| Capacity | Approx. Wh (at 3.7 V) | Typical status |
|---|---|---|
| 5,000 mAh | 18.5 Wh | Allowed in cabin |
| 10,000 mAh | 37 Wh | Allowed in cabin |
| 20,000 mAh | 74 Wh | Allowed in cabin |
| 26,800 mAh | 99 Wh | Allowed in cabin (just under 100 Wh) |
| 30,000 mAh | 111 Wh | Usually needs approval |
Most good power banks print the Wh rating on the case. If yours doesn’t, security staff may not accept it — another reason to buy from brands that label properly.
What capacity to buy
- 10,000 mAh: charges most phones about twice; pocketable. Best for city trips and flights.
- 20,000 mAh: for long travel days, two devices, or treks with little power.
- Laptop-capable (65 W+): only if you need to charge a USB-C laptop — keep it under 100 Wh.
See power banks for travel for what to look for.
Packing tips
- Keep the power bank in an outer pocket so you can show it at security.
- Protect the ports from keys and coins.
- If your cabin bag is taken at the gate, remove the power bank first.
- Pair it with a short USB-C cable and a multi-port charger.
Related
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Build my packing listGear that helps
Xiaomi Power Bank 4i 10000mAh 22.5W
Power Banks
- Good for
- Flights, City trips
- Energy (approx.)
- 37 Wh
Size, specs and price can change — check the listing before you buy.
Check price on Amazon.in (opens in a new tab)
Noise 100W GaN Charger (4 Ports)
Electronics
- Good for
- Business travel, Couples
Size, specs and price can change — check the listing before you buy.
Check price on Amazon.in (opens in a new tab)Some links on this website are affiliate links. If you make a purchase through them, we may earn a commission at no additional cost to you. Read our affiliate disclosure.
Frequently asked questions
Can I carry a power bank in checked baggage?
How many power banks can I carry on a flight?
Can I use my power bank during the flight?
Is a 30,000 mAh power bank allowed on flights?
We research travel essentials for Indian travellers using official guidance (airlines, BCAS, IATA, tourism boards), manufacturer specifications and our own packing frameworks. We do not publish invented reviews or ratings. Read more about how we research.