# Lithium metal batteries contained in equipment, PI 970 Section I (UN3091, > 1 g lithium cells / > 2 g batteries) — Postal shipping restrictions by item category

For Lithium metal batteries contained in equipment, PI 970 Section I (UN3091, > 1 g lithium cells / > 2 g batteries), carrier is FAA (air cargo, ICAO Technical Instructions); restriction type is restricted; scope is passenger and cargo aircraft; conditions is 5 kg passenger / 35 kg cargo net mass per package; shipper's declaration required; Class 9 lithium battery label (plus CAO label if over 5 kg); strong rigid outer packaging; packed to prevent accidental activation and damage due to equipment contact, recorded from its source on 2026-08-10.

- **Item category:** Lithium metal batteries contained in equipment, PI 970 Section I (UN3091, > 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:** passenger and cargo aircraft _(our reading, not quoted from the source)_
- **Conditions:** 5 kg passenger / 35 kg cargo net mass per package; shipper's declaration required; Class 9 lithium battery label (plus CAO label if over 5 kg); strong rigid outer packaging; packed to prevent accidental activation and damage due to equipment contact. _(verified: appears in the quote below)_

## What the source says

> PI 970 Section I 3091 Lithium Metal Batteries Contained in Equipment > 1g Lithium Content N/A > 2g Lithium Content N/A 5kg (PAX) 35kg (CAO) Yes Class 9 Lithium Battery Label (+ CAO Label if > 5kg) No UN Spec

## 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/).