Lithium Batteries: Carry-On vs Checked Baggage Rules (2026)
Lithium power banks and spare batteries are mandatory in carry-on bags and strictly banned in checked luggage. Compare FAA & TSA placement rules.
The Decision Verdict (40–60 Words)
Lithium-ion power banks and spare batteries are strictly prohibited in checked baggage and must be packed in carry-on bags only on all commercial flights worldwide. Batteries installed inside devices (laptops, phones) may be checked only if completely powered off, but carry-on remains strongly recommended.
Detailed Comparison Table
| Comparison Dimension | Carry-On Baggage Required for Spares | Checked Baggage Strictly Banned for Spares |
|---|---|---|
| Spare Batteries & Power Banks Differs by Rule | Allowed ≤ 100 Wh (Mandatory location) Source (FAA PackSafe) | STRICTLY PROHIBITED (Federal fine) Source (FAA PackSafe) |
| Batteries Installed in Devices (Laptops, Tablets) Differs by Rule | Allowed (Recommended) Source (TSA) | Allowed ONLY if completely powered OFF Source (FAA) |
Where Rules Are 100% Identical
To prevent false assumptions, the following standards are shared without difference between all compared parties:
- Both subject to the 100 Wh / 160 Wh maximum capacity ceiling
Key Rule Distinctions Explained
What is the rule for spare batteries & power banks?
Spare lithium-ion cells and external power banks pose catastrophic thermal runaway fire hazards. In the cabin, crew can extinguish battery fires with halon and water. In the cargo hold, fires can overpower suppression systems.
What is the rule for batteries installed in devices (laptops, tablets)?
Devices with built-in batteries may be checked only if powered completely off (not in sleep or standby mode) and protected from accidental activation.
Traveler Recommendation & Decision Summary
Never place loose lithium batteries or portable power banks in checked luggage. If forced to gate-check your carry-on, remove all batteries immediately.
Check Your Exact Items
Use our free calculators to verify watt-hours or liquids volume for your flight.
Frequently Asked Questions
What happens if you accidentally leave a power bank in a checked bag?
Checked baggage X-ray screening systems will automatically flag the high-density lithium-ion battery. TSA or airport security screeners will open your suitcase, confiscate the power bank, and leave a written Notice of Inspection. Your suitcase may also miss your flight during inspection.
Official Primary Sources & Citations
- FAA PackSafe for Passengers Verified: 2026-09-03
- TSA Lithium Batteries Guidelines Verified: 2026-09-03