To ensure flight safety, lithium-ion batteries and power banks must be carried in hand luggage; they are generally prohibited in checked baggage due to fire risks.
Lithium Battery Regulations for Power Banks and Spare Cells
Power banks and loose spare batteries are strictly prohibited in checked luggage because they pose a significant fire risk. If a lithium battery short-circuits or overheats, it can ignite a fire that is extremely difficult to extinguish in a cargo hold where crew cannot reach it.
According to IATA dangerous goods regulations, the capacity of the battery determines whether you need special permission:
- Under 100 Watt-hours (Wh): Generally permitted in carry-on without prior airline approval.
- 100 Wh to 160 Wh: Usually requires explicit approval from the airline.
- Over 160 Wh: Strictly forbidden on most commercial flights.
Airline-specific rules can be stricter. The Lufthansa Group, including Swiss and Eurowings, limits passengers to a maximum of two power banks and prohibits their use or charging during the flight.
Electronic Devices with Integrated Batteries
Laptops, tablets, smartphones, and handheld consoles (such as the Nintendo Switch or Steam Deck) are permitted in both carry-on and checked bags. However, if these devices are placed in checked luggage, they must be completely shut down. Standby mode is insufficient; the device must be fully powered off to prevent accidental activation and overheating.
While permitted in the hold, most carriers recommend keeping these items in the cabin. Some airlines in Asia and the U.S. have implemented stricter policies that mandate these devices stay in hand luggage exclusively.
Vapes, E-Cigarettes, and Liquid Restrictions
E-cigarettes and vapes must be transported in hand luggage. They are prohibited in checked baggage. Because the liquid inside is classified as a fluid, it must adhere to standard airport security limits: containers cannot exceed 100 milliliters.
Charging or using vapes on board is strictly forbidden. Travelers should also verify destination laws; for example, e-cigarettes are completely banned in Thailand, Singapore, and India, and can lead to legal penalties upon arrival.
Smart Luggage and Specialized Tech
The rules for “smart” suitcases depend entirely on the battery design. If the battery is removable, the passenger must remove it and carry it in the cabin, allowing the suitcase itself to be checked. If the battery is permanently built-in, many airlines refuse the suitcase as checked luggage, though it may still be allowed as a carry-on if it meets size requirements.
Other tech items follow these specific guidelines:
- Drones: The drone itself can be checked or carried, but all spare batteries must stay in the cabin.
- Hoverboards: Often banned or require prior registration due to high-capacity batteries. Those exceeding 160 Wh are generally prohibited.
- Selfie Sticks: Allowed in both, though exceptionally large or heavy models may be flagged as potential weapons by security.
Prohibited Items and Security Restrictions
Certain technical devices are banned from aircraft entirely, regardless of where they are packed. These include electric shockers, pepper spray, and toy guns that resemble real firearms (including some water pistols).
Camping equipment is also heavily restricted. While a camping stove may be allowed if it is completely empty and cleaned of all fuel residues, gas cartridges and fuel gels are strictly forbidden in all luggage. Most airlines suggest purchasing fuel at the destination.
Quick Reference: Carry-On vs. Checked Baggage
| Item | Hand Luggage | Checked Luggage | Crucial Note |
|---|---|---|---|
| Power Bank / Spare Battery | Yes | No | Max 100Wh usually free; no charging on board. |
| Laptop / Tablet / Phone | Yes | Yes | Must be fully powered off in checked bags. |
| E-Cigarette / Vape | Yes | No | Liquid limit 100ml; no use on board. |
| Smart Suitcase (Fixed Battery) | Yes | Often No | Check specific airline policy. |
| Electric Shaver | Yes | Yes | Must be fully powered off in checked bags. |
| Disposable Razor | Yes | Yes | Fixed cartridges only in carry-on. |
| Loose Razor Blades | No | Yes | Prohibited in cabin for safety. |
Customs and Value Declarations
For travelers carrying high-value electronics, the German Customs (Zoll) recommends a “Simplified Value Declaration” (Vereinfachte Nämlichkeitsbescheinigung) for items worth more than 430 Euros. This document, which includes the serial number of the device, proves the item was purchased in the home country, preventing the passenger from paying import duties upon return. Alternatively, keeping a digital copy of the original purchase invoice is an acceptable substitute.