# Spare (uninstalled) lithium ion batteries · Airlines (all US carriers) — Flying with restricted items: FAA, TSA and IATA baggage and air cargo rules For Spare (uninstalled) lithium ion batteries, authority is Airlines (all US carriers); restriction type is restricted; 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 100 Wh per battery (up to 160 Wh with airline approval, max 2 batteries); prohibited if carried for resale/distribution, recorded from its source on 2026-08-04. - **Item or substance:** Spare (uninstalled) lithium ion batteries - **Authority:** Airlines (all US carriers) _(our reading, not quoted from the source)_ - **Restriction type:** restricted _(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 100 Wh per battery (up to 160 Wh with airline approval, max 2 batteries); prohibited if carried for resale/distribution ## 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 [Flying with restricted items: FAA, TSA and IATA baggage and air cargo rules](https://referencesource.org/air-travel-item-restrictions/).