Spare Lithium Batteries
Spare (uninstalled) lithium batteries must be packed in carry-on only, with watt-hour limits.
Carry-on
Allowed with conditions
Checked
Not allowed
Carry-on details
Allowed with conditions. Loose spare lithium batteries — not installed in a device — must be in carry-on. Up to 100 Wh is unrestricted; 100–160 Wh needs airline approval (typically max 2 spares); over 160 Wh is not allowed on passenger flights.
Checked-bag details
Not allowed. Loose lithium batteries in checked baggage are a recognized fire-safety hazard and are prohibited.
Quantity limit
100 wh (per item)
Special instructions
Individually protect terminals (tape or a battery case) to prevent short-circuiting against keys, coins, or other batteries.
Related rules
FAQ
- What's the difference between spare batteries and batteries installed in a device?
- Batteries installed inside a device (like a laptop or phone) can generally go in checked bags with the device, though carry-on is recommended. Loose, uninstalled spare batteries must always be in carry-on.
Related items
Source: FAA — PackSafe (Hazardous Materials) · Last verified: 2026-07-29
Final decision rests with the security officer at the checkpoint.