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General

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Significant Regulatory Guidance
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PackSafe - Battery Powered Heat Producing Devices

Diving lamps, soldering equipment

Quantity limits: None

Requires airline approval.

Many battery-operated devices such as lamps/lights used in scuba diving and soldering tools can produce intense heat capable of starting a fire if the device is accidentally activated. These are allowed in checked and carry-on baggage, with airline approval, when a component (battery, fuse, heat element) is isolated to prevent unintentional activation and generation of heat...

PackSafe - Batteries

Dry Cell

Alkaline, nickel metal hydride, nickel cadmium

This covers typical non-lithium dry batteries (alkaline, nickel metal hydride, nickel cadmium, etc.) in the most common sizes: AA, AAA, C, D, button cell, 9-volt, etc.

Quantity limits: None

Batteries must be protected from damage.

Battery terminals (usually the ends) must be protected from short circuit (i.e., the terminals must not come in contact with other metal). Methods include...

PackSafe - Outdoor Equipment

Avalanche Rescue Backpack, Self-inflating

For models that only contain compressed air or compressed non-flammable gases (e.g., argon or CO2) in cartridges/cylinders, see the entry for Self-inflating personal safety devices (intended to be worn by a person) entry below.

For models that contain lithium batteries, see PackSafe battery guidance for conditions and limitations. Other dry cell batteries (e.g., alkaline, nickel metal...

PackSafe - Sprays and Repellents

Animal Spray, Repellent

Greater than 118 ml (4 fl oz), bear spray, animal repellent

See "Self-defense spray" in the PackSafe chart for an exception for checked baggage for certain sprays not exceeding 118 ml (4 fl oz). Most bear sprays are beyond the 4-ounce size and therefore cannot be carried.

Mosquito, Insect Repellent

Quantity limits: Included in, not in addition to, the quantity limits for other...