As a frequent traveler, you know the struggle of keeping your devices charged during long flights or layovers. A 20,000 mAh power bank is a lifesaver for powering up your phone, tablet, or earbuds on the go. But with airlines tightening regulations on lithium-ion batteries due to safety concerns—like the Air Busan fire incident in January 2025—you might be wondering: Can I bring my 20,000 mAh power bank on board? Here’s everything you need to know to navigate airline policies and travel stress-free.
The Good News: 20,000 mAh Power Banks Are Generally Allowed
Most airlines follow guidelines set by the TSA, FAA, and IATA, which allow lithium-ion batteries up to 100Wh in carry-on luggage. A typical 20,000 mAh power bank is roughly 74Wh (at 3.7V), well within this limit, so you can usually pack it in your carry-on without issue. However, some airlines impose restrictions on how you can use or store your power bank during flights, and China has introduced strict CCC mark requirements for flights departing from its airports. Let’s break down what to expect.
Airlines with Specific Restrictions
While no major airline outright bans a 20,000 mAh power bank, some have strict rules about in-flight use or storage. Here are key examples to watch out for:
- Lion Group (Lion Air, Batik Air): You can carry a 20,000 mAh power bank in your carry-on, but you can’t use it during the flight. It must stay under your supervision—think seat pocket or in your bag under the seat and not in the overhead bin.
- Singapore Airlines & Scoot: As of April 1, 2025, these airlines allow power banks up to 100Wh but prohibit using them or charging them via aircraft USB ports during flights. Keep it stowed away until you’re on the ground.
- Air Asia: You can bring your power bank (up to 100Wh), but charging devices in-flight is a no-go. Store it in your seat pocket or under the seat, not overhead.
- Thai Airways: Since March 15, 2025, Thai Airways bans in-flight use or charging of power banks. Your 20,000 mAh power bank is fine in carry-on, but it stays off during the flight.
- EVA Air, China Airlines, Uni Air: These Taiwanese carriers allow power banks up to 100Wh but prohibit in-flight use. Some, like China Airlines, may ask you to insulate the ports or store it in a zip-lock bag, especially at airports like Incheon.
- Hong Kong Airlines: As of April 7, 2025, Hong Kong’s aviation rules ban in-flight use and overhead storage of power banks. Keep your 20,000 mAh power bank under the seat or in a seat pocket.
- South Korean Airlines (Korean Air, Air Busan): South Korea’s March 2025 rules require power banks to be stored in seat pockets or under seats, not overhead, with ports covered (e.g., with tape or a pouch). No in-flight use or charging is allowed.
Top Tips for Traveling with a 20,000 mAh Power Bank
To breeze through security and avoid surprises, follow these travel-savvy tips:
- Always Carry-On: Power banks are never allowed in checked luggage due to fire risks. Keep your 20,000 mAh power bank in your carry-on bag for easy access at security.
- Check for CCC Mark for China Travel: If flying out of China, ensure your power bank has a clear CCC mark and isn’t recalled. If in doubt, rent or buy a compliant power bank in China to avoid confiscation.
- Verify Airline Policies: Rules vary by airline and country. Before you fly, visit your airline’s website or call customer service to confirm their latest power bank policies, especially for flights departing China or with Asian carriers.
- Choose a Certified Power Bank: Opt for trusted brands like Anker (e.g., PowerCore 24K) or UGREEN (Nexode 20,000 mAh), which often meet airline and CCC safety standards. Ensure the capacity rating (mAh/Wh) is clearly marked.
- Prepare for Security Checks: Store your power bank in an easily accessible part of your carry-on, ideally in a protective pouch or with insulated ports to prevent short circuits. For China, a zip-lock bag can help meet inspection requirements.
- Know the Limits: Most airlines allow up to two power banks per passenger, but some (like Delta) permit up to 20 spare batteries. Confirm with your airline to avoid surprises.
- Be Airport-Smart: In China and some EU countries, unmarked power banks or those without clear capacity labels may be confiscated. A protective case or tape over terminals can smooth things over, especially at Chinese airports.
Why the Restrictions?
The tightened rules, including China’s CCC mark mandate, stem from growing concerns about lithium-ion battery safety. Incidents like the Air Busan fire and other battery-related fires in 2025 have prompted airlines and regulators worldwide to crack down on in-flight use, storage, and certification to minimize fire risks at 30,000 feet. China’s CCC requirement specifically aims to ensure only safe, high-quality power banks are used, protecting passengers and aircraft.
Final Thoughts
A 20,000 mAh power bank is your perfect travel companion for keeping devices charged, and it’s allowed on most flights as long as you follow airline and regional rules. For flights departing China, ensure your power bank has a clear CCC mark to avoid confiscation. Stick to carry-on luggage, avoid in-flight use where prohibited, and store it properly (under the seat or in a seat pocket). Always check your airline’s specific policy before you fly, especially with Asian carriers or on routes involving China.
Disclaimer: Airline policies and China’s regulations can change, so always verify with your carrier and check the SAMR website for recalls before flying.