Fuel cells used to power portable electronic devices (e.g., cameras, cellular phones, laptop computers, camcorders) are allowed under the following conditions:

• Fuel cells containing fuel are permitted in carryon baggage only.
• Fuel cells and fuel cell cartridges may only contain flammable liquids, corrosive substances, liquefied flammable gas, water-reactive substances, or hydrogen in metal hydride.
• Refueling of fuel cells on board an aircraft is not allowed, but you can install a spare cartridge on board.
• The maximum quantity of fuel in any fuel cell or fuel cell cartridge must not exceed the following:
  • 6.7 fl oz (200 ml) for liquids.
  • 0.4 lb or 7 oz (200 g) for solids.
  • 4 fl oz (120 ml) for liquefied gas (non-metallic).
  • 6.7 fl oz (200 ml) for liquefied gas (metal).
  • The fuel cell cartridges must have a water capacity of 4 fl oz (120 ml) or less for hydrogen in metal hydride.
• Each fuel cell or cartridge must be marked with the maximum quantity and type of fuel.
• Each fuel cell or cartridge must be marked with a manufacturer's certification that it conforms to IEC PAS 62282–6–1 Ed.1.
• Fuel cells whose sole function is to charge a battery in the device are not allowed.
• Must be durably marked by the manufacturer: "APPROVED FOR CARRIAGE IN AIRCRAFT CABIN ONLY."

Note: TSA security regulations may be more restrictive. View updates from the TSA.

Traveling on an itinerary involving a partner airline? Keep in mind that the partner airline may have different guidelines.