Airline-Compliant Explanation

What Does Airline-Compliant Mean?

“Airline-compliant” refers to whether a power bank meets the regulations set by airlines and aviation authorities, such as the International Air Transport Association (IATA) and the Transportation Security Administration (TSA), for carrying battery-powered devices on flights. These rules are in place to ensure safety due to the risk of lithium-ion batteries overheating or catching fire.

Key Airline Battery Regulations (as of May 26, 2025)

  • Capacity Limit: Most airlines and aviation authorities allow lithium-ion batteries, like those in power banks, up to 100Wh (Watt-hours) in carry-on luggage without special approval. Some airlines permit up to 160Wh with airline approval, but anything above 160Wh is typically prohibited.
  • Carry-On Only: Power banks must be in your carry-on luggage, not checked baggage, due to fire risk.
  • Quantity and Protection: Power banks should be individually protected (e.g., in a case or plastic bag) to prevent short-circuiting, and some airlines limit the number (often 2 per passenger).
  • Labeling: The power bank’s capacity (in mAh or Wh) should be clearly labeled. If not, you may need to calculate it (see below).

Calculating Watt-Hours (Wh)

To determine if a power bank is airline-compliant, convert its capacity from mAh (milliamp-hours) to Wh using the formula:

Wh = (mAh × Voltage) ÷ 1000

Most power banks operate at a nominal voltage of 3.7V (standard for lithium-ion batteries), though output voltage may be 5V. Use the nominal voltage for calculations unless specified.

Power Bank Examples

  • Anker 737 Power Bank (24,000mAh):
    • Capacity: 24,000mAh.
    • Watt-Hours: Using 3.7V, (24,000 × 3.7) ÷ 1000 = ~88.8Wh.
    • Airline-Compliant: Yes, 88.8Wh is under the 100Wh limit, so it’s allowed in carry-on luggage without restrictions. You can bring this on any flight, but keep it in your carry-on and ensure the terminals are protected (e.g., in its original packaging or a case).
  • Anker Nano Power Bank (5,000mAh):
    • Capacity: 5,000mAh.
    • Watt-Hours: (5,000 × 3.7) ÷ 1000 = ~18.5Wh.
    • Airline-Compliant: Yes, 18.5Wh is well below the 100Wh limit. It’s safe for carry-on, and its small size makes it easy to pack.

Additional Considerations

  • Inspection: At security, you may need to declare power banks. Ensure their capacity is labeled.