Why Some Power Banks Are Banned on Flights

Power banks have become essential for travelers, keeping smartphones, tablets, and laptops charged on the go. However, not all power banks are allowed on flights—some can even be confiscated at security checks. The reason? Safety concerns related to lithium batteries, which can overheat or catch fire if poorly made. Airlines and aviation authorities enforce strict rules to prevent accidents mid-flight. In this article, we’ll explain why certain power banks are banned, how to check if yours is safe, and what to do if airport security stops you. 

Why Airlines Ban Certain Power Banks 

Lithium-ion batteries, commonly used in power banks, store a large amount of energy in a small space. While efficient, they can pose serious risks if defective or damaged. Overheating, short-circuiting, or physical impacts can cause these batteries to swell, leak, or even explode. In extreme cases, a malfunctioning lithium battery can trigger a fire that’s difficult to extinguish, especially in a pressurized airplane cabin. This is why airlines follow strict guidelines from organizations like the FAA (Federal Aviation Administration) and IATA (International Air Transport Association). These rules limit the capacity and condition of power banks allowed on flights. If a power bank lacks proper safety certifications or shows signs of damage, it won’t be permitted on board.

Key Reasons Some Power Banks Are Prohibited 

No 3C Certification or Fake Safety Labels 

A reliable power bank should have proper safety certifications, such as 3C (China Compulsory Certification), CE (Conformité Européenne), or UL (Underwriters Laboratories). These marks indicate that the product meets strict quality and safety standards. However, some cheap or counterfeit power banks use fake labels to appear compliant. Airport security may test suspicious power banks, and if they fail, they’ll be confiscated. Always buy from trusted brands and verify certifications before traveling. 

Overcapacity

Airlines restrict power banks based on their energy capacity, measured in watt-hours (Wh). Most airlines allow power banks below 100Wh without approval, while those between 100Wh and 160Wh may require airline permission. Any power bank exceeding 160Wh is completely banned from flights. To check your power bank’s capacity, look for the label—if it only lists mAh (milliampere-hours), convert it using the formula: (mAh × Voltage) ÷ 1000 = Wh. For example, a 20,000mAh power bank at 5V equals 100Wh, the maximum allowed without special approval. 

Physical Damage or Recalled Models 

Even a high-quality power bank can become unsafe if damaged. Dents, exposed wires, swelling, or overheating are red flags for airport security. Airlines prohibit such devices because they’re more likely to malfunction. Additionally, if a manufacturer recalls a specific model due to safety issues, airlines may ban it entirely. Before packing, inspect your power bank for damage and check online for any recalls. 

Airline Rules: What’s Allowed & What’s Not 

Carry-On Only (No Checked Luggage) 

All airlines require power banks to be carried in hand luggage, never in checked baggage. The reason is simple: if a lithium battery overheats or catches fire, cabin crew can quickly respond. In the cargo hold, a fire could go unnoticed until it’s too late. Always keep your power bank in your carry-on bag, and never leave it in a suitcase that will be checked in. 

In-Flight Usage Bans by Major Airlines 

While you can carry approved power banks, many airlines prohibit using them to charge devices during the flight. This rule minimizes risks in case of a malfunction. Some airlines allow charging in airplane mode, but it’s best to check their policies beforehand. If unsure, avoid using your power bank mid-flight—rely on the plane’s USB ports or outlets instead. 

How to Check If Your Power Bank Is Flight-Safe 

Before your trip, make sure your power bank meets airline requirements by checking a few key details. First, confirm its capacity is under 100Wh (or up to 160Wh with airline approval). Next, look for essential safety certifications like 3C, CE, or UL. Inspect the device for any damage—avoid using or carrying power banks with swelling, cracks, or exposed components. Additionally, review your airline’s specific policies, as some may have extra restrictions. If your power bank passes all these checks, you’re all set for travel. Otherwise, it’s best to invest in a compliant, travel-friendly alternative.

What to Do If Your Power Bank Is Confiscated 

Even when taking precautions, airport security may still confiscate your power bank if they consider it unsafe. If this occurs, remain calm—arguing won't change the decision as officers must follow strict safety protocols. Politely ask for an explanation to understand what went wrong and avoid similar issues in the future. If the device can't be recovered, dispose of it properly in designated battery recycling bins available at most airports. As a last resort, check if the airport sells compliant replacements. To minimize this risk, always verify airline regulations beforehand and only travel with certified, undamaged power banks that meet all capacity requirements.

Conclusion  

Power banks are incredibly useful, but safety regulations exist for good reasons. By choosing certified models, checking capacity, and following airline rules, you can avoid travel disruptions. If you need a reliable option, Anker portable charger is well-regarded for their safety and compliance. Always double-check before flying—your devices (and fellow passengers) will thank you!