# Batteries, Lithium (spare) · FAA (air transport) — Flying with restricted items: FAA, TSA and IATA baggage and air cargo rules

For Batteries, Lithium (spare), authority is FAA (air transport); restriction type is restricted; scope is carry-on baggage; not allowed in checked bags; conditions is Lithium metal batteries limited to 2 grams of lithium per battery; lithium ion batteries limited to 100 Wh per battery; with airline approval up to two spare larger batteries (101–160 Wh or 2–8 grams), recorded from its source on 2026-08-10.

- **Item or substance:** Batteries, Lithium (spare)
- **Authority:** FAA (air transport) _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** carry-on baggage; not allowed in checked bags _(our reading, not quoted from the source)_
- **Conditions:** Lithium metal batteries limited to 2 grams of lithium per battery; lithium ion batteries limited to 100 Wh per battery; with airline approval up to two spare larger batteries (101–160 Wh or 2–8 grams).

## What the source says

> Size limits: Lithium metal (non-rechargeable) batteries are limited to 2 grams of lithium content per battery. Lithium ion (rechargeable) batteries are limited to a rating of 100 watt hours (Wh) per battery. These limits allow for nearly all types of lithium batteries used by the average person in their electronic devices. With airline approval, passengers may also carry up to two spare larger lithium ion batteries (exceeding 101–160 Wh) or Lithium metal batteries (exceeding 2-8 grams). This size covers the larger after-market extended-life laptop computer batteries and some larger batteries used in professional audio/visual equipment.

## Source

- https://www.faa.gov/hazmat/packsafe/lithium-batteries

Last verified: 2026-08-10. Review by: 2027-08-10.
Part of [Flying with restricted items: FAA, TSA and IATA baggage and air cargo rules](https://referencesource.org/air-travel-item-restrictions/).