Yes, you can fly with a power supply. However, there are different rules depending on the type of power supply and whether you're packing it in your carry-on or checked baggage.
General Guidelines:
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Checked Bags: Generally, power supplies without lithium batteries (like those for desktop computers or some older laptops) are permitted in checked baggage.
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Carry-On Bags: Power supplies without lithium batteries are also permitted in carry-on bags. However, portable chargers or power banks containing a lithium ion battery must be packed in carry-on bags.
Lithium Battery Considerations:
The primary concern with power supplies for air travel revolves around lithium batteries. Lithium batteries can pose a fire risk if damaged or improperly stored. Therefore, these rules are in place to ensure passenger safety.
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Power Banks/Portable Chargers (with Lithium-Ion Batteries): These must be in your carry-on baggage. This allows the crew and you to quickly address any potential issues (e.g., overheating) during the flight.
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Watt-hour (Wh) Rating: There are often restrictions on the watt-hour rating of lithium-ion batteries. Most airlines allow batteries up to 100 Wh without restrictions. Batteries between 100 Wh and 160 Wh may require airline approval. Batteries exceeding 160 Wh are generally prohibited. Check with your airline for specific restrictions.
Summary Table:
| Power Supply Type | Checked Baggage | Carry-On Baggage | Notes |
|---|---|---|---|
| Power supply without lithium batteries | Yes | Yes | Examples: desktop computer power supply, some older laptop power bricks. |
| Power bank/Portable charger (lithium-ion) | No | Yes | Must be in carry-on. Check Wh rating; restrictions may apply. Keep terminals protected to prevent short circuits. |
| Power supply with integrated lithium battery | Varies | Varies | Refer to airline's specific rules concerning Lithium batteries in electronic devices. This is different from the portable power bank situation described above, and usually refers to the battery embedded in the laptop itself. |
Recommendations:
- Check with Your Airline: Always verify the specific regulations of the airline you are flying with, as rules can vary. Look for their "Dangerous Goods" or "Restricted Items" section on their website.
- Protect Terminals: Whether in checked or carry-on baggage, protect the terminals of any power supply with exposed contacts to prevent short circuits. Consider using tape or placing the power supply in a protective bag.
- Identify Watt-hour Rating: Know the watt-hour rating of any lithium-ion batteries in your power supplies. This information is usually printed on the battery itself.
- Declare if Necessary: If you have a power supply with a lithium-ion battery exceeding 100 Wh, be prepared to declare it to the airline and obtain approval if required.
- Carry Documentation: If there is any ambiguity, have the manufacturer's specifications for your power supply readily available.
