Cathay Pacific Power Bank Rules 2026
Page updated · Sources and review method
Confirm the capacity allowance directly with the airline.
- Power banks per passenger
- 2
- Checked baggage
- Not allowed
- Onboard use & charging
- Neither use nor recharging is allowed.
- Special conditions
- Keep power banks in cabin baggage under the seat, not overhead. Confirm the capacity allowance directly; the reviewed power-bank section did not state a separate Wh limit.
Last checked 2026-11-04
Capacity is only one part of acceptance. Damaged or recalled batteries, unreadable labels and route restrictions can change the answer.
Power bank flight checker
Enter the capacity and voltage from your label to see your result.
Neither use nor recharging is allowed.
Keep power banks in cabin baggage under the seat, not overhead. Confirm the capacity allowance directly; the reviewed power-bank section did not state a separate Wh limit.
Common power bank sizes on Cathay Pacific
Examples for one device at 3.7 V. Use your actual label; onboard use, certification and condition are separate checks.
| Battery capacity | Energy at 3.7 V | Capacity guidance |
|---|---|---|
| 5,000 mAh | 18.5 Wh | Confirm with the airline |
| 10,000 mAh | 37 Wh | Confirm with the airline |
| 20,000 mAh | 74 Wh | Confirm with the airline |
| 26,800 mAh | 99.16 Wh | Confirm with the airline |
| 30,000 mAh | 111 Wh | Confirm with the airline |
| 50,000 mAh | 185 Wh | Not allowed |
Read the official policy linked above before departure. This comparison is not airline approval.
Power bank flight FAQs
Quick answers before you pack.
How many power banks can I take on Cathay Pacific?
2 per passenger, subject to capacity and route rules.
Can I use my power bank on Cathay Pacific?
Neither use nor recharging is allowed.
Can I put it in a checked bag?
No. Keep power banks with you in the cabin, including when your carry-on is checked at the gate.
Can I bring a 10,000 mAh power bank on Cathay Pacific?
At 3.7 V it is 37 Wh. The capacity allowance is not fully verified. This calculation is not permission to carry the power bank. Check the actual label and the onboard restrictions above.
Can I bring a 20,000 mAh power bank on Cathay Pacific?
At 3.7 V it is 74 Wh. The capacity allowance is not fully verified. This calculation is not permission to carry the power bank. Check the actual label and the onboard restrictions above.
Can I bring a 30,000 mAh power bank on Cathay Pacific?
At 3.7 V it is 111 Wh. The capacity allowance is not fully verified. This calculation is not permission to carry the power bank. Check the actual label and the onboard restrictions above.