Last Updated on 2025 年 8 月 18 日 by 総合編集組
2025 Ultimate Guide to Bringing Power Banks on Flights: Key Rules and Tips
As power banks have become indispensable for modern travelers, their lithium-ion batteries pose significant safety risks, prompting stringent aviation regulations in 2025.
This comprehensive summary outlines the latest global standards, airline-specific policies (including Air Busan, Eastar Jet, Thai AirAsia, Thai Lion Air, and K-Mile Asia), and practical advice for selecting and carrying power banks, ensuring a hassle-free travel experience.
Why Are Power Bank Regulations So Strict?
Lithium Battery Risks
Power banks rely on lithium-ion batteries, which, if damaged or overheated, can ignite, posing a severe threat in the confined environment of an aircraft. The U.S. Federal Aviation Administration (FAA) reports 632 lithium battery incidents by 2024, with 246 linked to power banks, averaging 1.7 incidents weekly. A notable incident in early 2025 at Busan Airport, where a power bank caught fire, led to injuries and flight disruptions, intensifying global regulatory scrutiny.
Global Regulatory Framework
The International Air Transport Association (IATA) and the International Civil Aviation Organization (ICAO) updated their guidelines in the 66th edition of the IATA Dangerous Goods Regulations (effective January 2025). These rules mandate that power banks be carried in carry-on luggage, emphasize clear capacity labeling, and restrict in-flight use to mitigate fire risks. The shift from advisory to mandatory regulations reflects the aviation industry’s focus on safety.
Core Power Bank Regulations for 2025
Carry-On Only, No Checked Luggage
All power banks must be carried in hand luggage, as checked baggage in cargo holds cannot be monitored for potential issues like overheating. This allows cabin crew to respond swiftly with fire containment tools, such as fire-resistant bags, if anomalies occur.
Capacity Limits
Regulations hinge on watt-hours (Wh), a precise measure of battery energy:
- Below 100Wh: Freely permitted, typically 3-5 units per passenger (some airlines allow up to 20 for personal use).
- 100Wh to 160Wh: Requires airline approval, limited to 2 units per passenger, often needing a Material Safety Data Sheet (MSDS).
- Above 160Wh: Prohibited on flights, requiring special cargo transport.
Converting mAh to Wh
Many power banks list capacity in milliamp-hours (mAh). Convert to Wh using: Wh = mAh × Voltage (V) ÷ 1000. Most lithium-ion batteries have a 3.7V rating. Examples:
- 10,000mAh = 37Wh
- 20,000mAh = 74Wh
- 26,800mAh = 99.2Wh
- 30,000mAh = 111Wh (requires approval)
Clear Labeling
Power banks must have clear, factory-printed capacity labels (Wh or mAh). Unlabeled or hand-labeled units risk confiscation, as security personnel need quick verification.
Terminal Protection
To prevent short circuits, exposed terminals must be covered with insulating tape, original packaging, or placed in separate plastic bags or protective cases. Korean airlines like Air Busan and Eastar Jet mandate transparent zip-lock bags for added scrutiny.
In-Flight Restrictions
Most airlines prohibit using or charging power banks during flights due to overheating risks. Where permitted (e.g., JAL, ANA), devices must remain visible, placed in seat pockets or under seats, not overhead bins.
Airline-Specific Policies in 2025
Taiwanese Airlines
- EVA Air: Since March 2025, bans in-flight use/charging; power banks must be in carry-on, visible, and not in overhead bins.
- China Airlines: Prohibits in-flight use/charging; requires 3C certification for China routes.
Asian Airlines
- Singapore Airlines: Bans in-flight use/charging from April 2025; carry-on only.
- Cathay Pacific: Follows Hong Kong rules, prohibiting in-flight use; must be stored under seats or in seat pockets.
- Japan Airlines (JAL) / All Nippon Airways (ANA): Allows visible in-flight use from July 2025; prohibits overhead bin storage.
- Korean Air: Limits to 5 units below 100Wh; bans overhead bin storage.
- China Southern Airlines: Requires power banks to be powered off during flights; no in-flight use/charging.
- Air Busan: Since March 2025, mandates transparent zip-lock bags and insulated terminals; bans in-flight use and overhead storage.
- Eastar Jet: Similar to Air Busan, requires transparent bags and tape; prohibits in-flight charging.
- Thai AirAsia: Carry-on only, proper packaging required; bans in-flight charging.
- Thai Lion Air: Carry-on only, bans in-flight use unless approved; 100-160Wh needs permission.
- K-Mile Asia: Primarily a cargo airline; passenger flights (if any) follow IATA standards, requiring carry-on and proper packaging.
European and U.S. Airlines
- Lufthansa: Bans in-flight use/charging; devices must be secured to prevent activation.
- Emirates: From October 2025, limits to one 100Wh unit per passenger, stored under seats.
- U.S. Airlines (Delta, United, American, Southwest): Permit limited in-flight use; Southwest bans overhead storage.
Practical Tips for Travelers
Choosing a Compliant Power Bank
- Capacity: Opt for 100Wh or below (e.g., 27,000mAh) to avoid approval hassles.
- Certifications: Select brands like Anker, Xiaomi, ONPRO, or Moshi with CE, FCC, UL, or RoHS certifications.
- Features: Consider fast-charging (PD/QC), wireless charging, or built-in cables for convenience.
- Battery Type: Lithium-ion is standard, but lithium iron phosphate (LiFePO4) offers better thermal stability.
Security Checkpoint Tips
- Place power banks in easily accessible bag pockets for quick inspection.
- Carry product manuals or MSDS for high-capacity units.
- Ensure no physical damage (e.g., swelling), as damaged units are confiscated.
Travel and Charging Best Practices
- Avoid extreme temperatures (e.g., hot cars or direct sunlight).
- Store multiple units separately in protective cases to prevent heat buildup.
- Monitor charging in airports or hotels; avoid unstable power sources like car outlets.
Emergency Protocols
If a power bank shows signs of overheating, swelling, or smoke, notify cabin crew immediately. Do not handle it yourself, as crew members are trained to manage lithium battery incidents.
Conclusion
Navigating 2025’s power bank regulations requires understanding global standards and airline-specific rules. By choosing compliant devices, ensuring proper packaging, and verifying airline policies, travelers can avoid confiscation and ensure safety. Always check the airline’s website before departure, as regulations evolve. With these insights, you’re equipped for a seamless, worry-free journey with your power bank!
