What this guide covers
- How tools that produce heat (soldering irons, glue guns, diving lamps) are handled, by power source
- Devices powered by fuel cells, and items with luminous paint
For hair irons and hair curlers, see Hair dryers and hair irons; for ordinary devices with batteries, see Items with batteries.
1. Soldering irons and glue guns
| Item | Carry-on baggage | Checked baggage |
|---|---|---|
| Mains-powered (including those powered by a power bank) | Allowed | Allowed |
| Battery-operated (lithium ion batteries, 160Wh or less) | Not allowed (allowed if the heating part and the battery can be separated; the removed batteries and spare batteries must be protected against short circuits and carried on board only) | Not allowed (allowed if the heating part and the battery can be separated; the batteries cannot be checked) |
| Battery-operated (batteries other than lithium ion) | Not allowed (allowed if the heating part and the battery can be separated; protect the removed batteries against short circuits) | Not allowed (same) |
| Gas type (hydrocarbon gas) | Not allowed | Not allowed |
Items with a very sharp point cannot be carried on board.
Source: MLIT: "Examples of Dangerous Goods by Air Transportation" (English version, last updated April 24, 2026) (retrieved 2026-09-27)
2. Diving lamps
| Item | Carry-on baggage | Checked baggage |
|---|---|---|
| Powered by lithium ion batteries (160Wh or less) | Allowed (remove the batteries from the body; the removed batteries and spare batteries must be protected against short circuits and carried on board only) | Allowed (the body only; the batteries cannot be checked) |
| Powered by other batteries | Allowed (separate the heating part and the battery, and protect the batteries against short circuits) | Allowed (same) |
Source: MLIT: "Examples of Dangerous Goods by Air Transportation" (English version, last updated April 24, 2026) (retrieved 2026-09-27)
3. Fuel cells and luminous paint
| Item | Carry-on baggage | Checked baggage |
|---|---|---|
| Electronic devices containing fuel cells (the body) | Allowed | Not allowed |
| Spare fuel cartridges for those devices | Allowed (up to 2; do not refuel on board except with dedicated spare cartridges) | Allowed (up to 2) |
| Luminous paint (used for the face of watches) | Allowed | Allowed |
| Luminous paint (other than the above) | Not allowed | Not allowed |
Source: MLIT: "Examples of Dangerous Goods by Air Transportation" (English version, last updated April 24, 2026) (retrieved 2026-09-27)
Some airlines have stricter rules. On international flights, rules of other countries' authorities may also apply.