Power Banks on Planes: Wh, Quantity and Airline Rules
Check power-bank capacity, cabin packing and onboard use. Understand the 2026 IATA guidance, airline restrictions and why mAh alone is not enough.
Keep power banks in the cabin, even if your cabin bag is sent to the hold at the gate. Check the label, the number you are carrying and each operating airline's policy. Carrying a power bank and using it onboard are separate permissions.
What to check before packing
| Check | Your next step |
|---|---|
| Wh rating and model | Use the manufacturer's label or documentation; an output rating in watts is not battery capacity |
| Quantity | IATA's 2026 passenger guidance specifies no more than two; an airline may allow fewer |
| Capacity | The same passenger guide sets 100 Wh per power bank; do not assume a larger unit is accepted |
| Location | Carry in the cabin and remove it before gate-checking the bag |
| Use and storage | Check the operator's charging and stowage restrictions separately |
Sources: IATA passenger guidance, pages 1, 7–8 and FAA PackSafe.
Why “up to 160 Wh with approval” is not a universal answer
IATA's operator note, page 4 describes the March 2026 ICAO change: two personal power banks and no recharging them onboard. It discusses national adoption and a 100–160 Wh operator-approval provision in the 2026 ICAO framework. However, its table and the passenger guide take the stricter position of no power banks above 100 Wh. Do not apply an allowance for spare camera or laptop batteries to a power bank. Ask the operating airline about your exact model before travel; a declaration at check-in is not approval.
Read the right voltage
Wh = mAh ÷ 1,000 × nominal battery voltage. If the label actually states 20,000 mAh at 3.7 V, that is 74 Wh. A USB output label such as 5 V or 65 W does not provide the nominal battery voltage. Do not guess 3.7 V or treat 27,000 mAh as a universal limit. Keep the manufacturer's Wh marking readable.
Onboard use can be more restrictive
The Emirates policy, for example, allows one power bank but prohibits both using it and recharging it onboard. It requires storage in the seat pocket or in a bag under the seat, not in the overhead bin. Check the operator on every leg; permission on the outbound flight does not settle the return journey.
Before handing over a bag
Remove the power bank, protect exposed contacts from metal and accidental short circuits, and keep it in a permitted cabin item. Do not bring a damaged, swollen or safety-recalled unit; follow the manufacturer's recall instructions. If a device becomes hot or smokes during travel, tell airport staff or crew immediately. The FAA guidance explains these precautions.
Use the bag checker for the dimensions and weight of the bag carrying your electronics. It does not approve batteries or dangerous goods. For installed versus spare batteries, read the battery-packing guide.
Sources and scope
Source-based research; no hands-on test or specialist review claimed.
Two power banks, cabin carriage and no recharging onboard; national implementation and the 2026/2027 distinction.
Operator guidance dated 31 March 2026; airline and jurisdiction determine acceptance.
Page 4: personal-use provisions, 100–160 Wh, national implementation; page 10: Appendix BSource review: · Codex (AI source review)
Passenger guidance uses a 100 Wh power-bank ceiling; battery-label calculation and separate treatment of installed/spare batteries.
IATA passenger guidance, not a universal guarantee of legal or airline acceptance.
Page 1: nominal voltage and label; page 7: Power banks; page 8: Table 1Source review: · Codex (AI source review)
Cabin-only power banks, gate-check removal, short-circuit protection and damaged/recalled batteries.
US FAA guidance; airline restrictions may be stricter.
Cabin-only/gate-check paragraph; terminal protection; damaged or recalled batteriesSource review: · Codex (AI source review)
One power bank; no onboard use or charging; accessible storage rather than the overhead bin.
Emirates-specific policy; do not transfer this rule to other carriers.
Emirates regulations for power banks onboard: quantity, use, recharging and storageSource review: · Codex (AI source review)
Check if your bag fits
Compare your carry-on dimensions with your airline’s allowance.