What happens if my power bank is too big?

Security will confiscate it. You'll either have to throw it away or return to check-in to put it in checked luggage (which airlines don't allow anyway, so you'll lose it).

Can I use my power bank during the flight?

Yes, once you're at cruising altitude and the seatbelt sign is off. Don't use it during takeoff, landing, or when asked to turn off devices.

Do I need to declare my power bank?

No declaration needed for power banks under 100Wh. For 100-160Wh models, contact your airline before flying to get approval.

Are there different rules for international flights?

Basic rules are the same worldwide, but some airlines have stricter limits. Check with your specific airline, especially for long-haul flights.

How to bring power banks on flights

Power banks must go in carry-on luggage, not checked bags. They need to be under 100Wh capacity (roughly 27,000mAh) for most airlines. Larger ones up to 160Wh need airline approval.

Check your power bank's capacity. Find the Wh (watt-hour) rating on your power bank or calculate it: mAh ÷ 1000 × 3.7V = Wh. A 20,000mAh power bank is about 74Wh.
Pack in carry-on only. Never put power banks in checked luggage. Airlines prohibit this due to fire risk. Keep them in your carry-on bag or personal item.
Prepare for security screening. Remove large power banks from your bag at security if requested. Small ones can usually stay in your bag, but be ready to take them out.
Turn off the power bank. Make sure your power bank is completely off during the flight. Don't charge devices with it while the plane is taxiing, taking off, or landing.
Know airline limits. Most airlines allow up to 2 power banks per passenger under 100Wh. For 100-160Wh power banks, you need airline approval before flying.

What happens if my power bank is too big?: Security will confiscate it. You'll either have to throw it away or return to check-in to put it in checked luggage (which airlines don't allow anyway, so you'll lose it).
Can I use my power bank during the flight?: Yes, once you're at cruising altitude and the seatbelt sign is off. Don't use it during takeoff, landing, or when asked to turn off devices.
Do I need to declare my power bank?: No declaration needed for power banks under 100Wh. For 100-160Wh models, contact your airline before flying to get approval.
Are there different rules for international flights?: Basic rules are the same worldwide, but some airlines have stricter limits. Check with your specific airline, especially for long-haul flights.