# Spare (uninstalled) lithium metal batteries — Postal shipping restrictions by item category

For Spare (uninstalled) lithium metal batteries, carrier is Airlines (all US carriers); restriction type is carry-on only; scope is passenger air travel; conditions is Must be in carry-on baggage only; if carry-on is checked at gate or planeside, batteries must be removed and kept with passenger in cabin; battery terminals must be protected from short circuit; size limit 2 grams of lithium content per battery (up to 8 grams with airline approval, max 2 batteries); prohibited if carried for resale/distribution, recorded from its source on 2026-08-04.

- **Item category:** Spare (uninstalled) lithium metal batteries _(unconfirmed — we could not tie this to the quote below)_
- **Carrier:** Airlines (all US carriers) _(our reading, not quoted from the source)_
- **Restriction type:** carry-on only _(our reading, not quoted from the source)_
- **Scope:** passenger air travel _(our reading, not quoted from the source)_
- **Conditions:** Must be in carry-on baggage only; if carry-on is checked at gate or planeside, batteries must be removed and kept with passenger in cabin; battery terminals must be protected from short circuit; size limit 2 grams of lithium content per battery (up to 8 grams with airline approval, max 2 batteries); prohibited if carried for resale/distribution _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> Spare (uninstalled) lithium ion and lithium metal batteries, including power banks and cell phone battery charging cases, must be carried in carry-on baggage only

## Source

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

Last verified: 2026-08-04. Review by: 2027-08-04.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).