Power bank on a plane — 2026 regulations

The Short Answer

Power banks are allowed on airplanes when their Wh value is below 100 Wh. Most mobile phone power banks (5,000–27,000 mAh) meet this requirement. Pack it in your checked or carry-on luggage — just don't leave it on the plane.

Why This Is the Case

Wh (watt-hour) describes the energy content of a battery. On airplanes, restrictions are based on safety: the risk of lithium-ion chemistry increases with excessively large batteries. IATA and airlines follow international regulations to prevent dangerous situations in extreme temperatures or by accident. 100 Wh is a practically safe limit for ordinary consumer devices.

When Things Get Complicated

Restrictions come into play when:

• The power bank is over 100 Wh — for some 30,000+ mAh devices, you need to get permission from the airline
• The packaging is not marked — security personnel may require proof of the Wh value
• The device is damaged — security guards may refuse a suspicious-looking device
• You are traveling with multiple airlines — rules may vary; always check before traveling

Especially on Asian or long-haul flights, it is worth checking the airline's own website, as local rules may be stricter.

Practical Solutions

1. Check the Wh before traveling — look for the marking on the packaging or battery (e.g., "37 Wh"). If missing, calculate: mAh × 3.7 ÷ 1000
2. Keep it in your luggage — not overhead; makes security check easier
3. Avoid physically damaged devices — security personnel may refuse suspicious devices
4. Large devices (100–160 Wh) — require prior approval from the airline; under 100 Wh usually does not require permission
5. Carry a certified device — CE and similar markings help with inspection

Power Bank and Magnetic Charging on the Go

A good power bank combined with a magnetic charger is the traveler's best combination: a small capacity is enough when charging is more stable and battery health is maintained. Magnetic attachment reduces alignment problems — especially at the airport or on the train, when time and space are limited.

uknowloop, MagSafe, Qi, iPhone, and the new Qi2 standard are all good options for magnetic charging.

Summary

A power bank is allowed on an airplane when the Wh value is less than 100. Check the marking before traveling, keep it in your luggage, and only use undamaged, certified devices. Follow the airline's own instructions, especially on long flights.