# Electronic devices connected to lithium batteries — Postal shipping restrictions by item category

For Electronic devices connected to lithium batteries, carrier is Royal Mail / Parcelforce; restriction type is restricted; scope is UK (Post Office counter); conditions is Each parcel must contain no more than four cells or two batteries installed in a device; lithium ion max 20Wh per cell or 100Wh per battery; lithium metal max 1g per cell or 2g per battery; max net quantity 5kg per parcel, recorded from its source on 2026-08-10.

- **Item category:** Electronic devices connected to lithium batteries _(verified: appears in the quote below)_
- **Carrier:** Royal Mail / Parcelforce _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** UK (Post Office counter) _(our reading, not quoted from the source)_
- **Conditions:** Each parcel must contain no more than four cells or two batteries installed in a device; lithium ion max 20Wh per cell or 100Wh per battery; lithium metal max 1g per cell or 2g per battery; max net quantity 5kg per parcel. _(verified: appears in the quote below)_

## What the source says

> Packaging guidelines: Each parcel must contain no more than four cells or two batteries installed in a device. For lithium ion/polymer batteries the Watt-hour rating must not exceed 20Wh per cell or 100Wh per battery.

## Source

- https://corporate.postoffice.co.uk/media/w5dlus1c/foia-response_foi2025_00179_appendix-d_rm-dangerous-goods-and-prohibited-and-restricted.pdf

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/).