# Lithium metal batteries packed alone, PI 968 Section IB (UN3090, ≤ 1 g lithium cells / ≤ 2 g batteries) — Postal shipping restrictions by item category For Lithium metal batteries packed alone, PI 968 Section IB (UN3090, ≤ 1 g lithium cells / ≤ 2 g batteries), carrier is FAA (air cargo, ICAO Technical Instructions); restriction type is restricted; scope is cargo aircraft only; forbidden on passenger aircraft; conditions is Passenger aircraft forbidden; 2.5 kg net mass cargo aircraft only; shipper's declaration required; Class 9 label, lithium battery mark and CAO label; 1.2 m drop test and 3 m stack test, recorded from its source on 2026-08-10. - **Item category:** Lithium metal batteries packed alone, PI 968 Section IB (UN3090, ≤ 1 g lithium cells / ≤ 2 g batteries) _(verified: appears in the quote below)_ - **Carrier:** FAA (air cargo, ICAO Technical Instructions) _(our reading, not quoted from the source)_ - **Restriction type:** restricted _(our reading, not quoted from the source)_ - **Scope:** cargo aircraft only; forbidden on passenger aircraft _(our reading, not quoted from the source)_ - **Conditions:** Passenger aircraft forbidden; 2.5 kg net mass cargo aircraft only; shipper's declaration required; Class 9 label, lithium battery mark and CAO label; 1.2 m drop test and 3 m stack test. _(verified: appears in the quote below)_ ## What the source says > PI 968 Section IB 3090 Lithium Metal Batteries ≤ 1g Lithium Content N/A ≤ 2g Lithium Content N/A (PAX) Forbidden 2.5kg (CAO Yes Class 9 Lithium Battery Label + Lithium Battery Mark + CAO Label No UN Spec 1.2m Drop Test 3m Stack Test ## Source - https://www.faa.gov/hazmat/safecargo/icao-lithium-battery-summary-chart Last verified: 2026-08-10. Review by: 2027-08-10. Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).