26 July 2026 · 4 min read
Sending lithium batteries and electronics legally in the UK
Battery shipping is heavily regulated. Here is the simple version for everyday senders.
Devices with batteries inside
UN3481 — allowed on most UK ground services if the battery is installed, undamaged, and under 100 Wh (most laptops and phones).
Spare/loose batteries
UN3480 — much more restricted. Most couriers refuse loose lithium batteries shipped alone. You need a dangerous-goods service.
Labelling and packaging
Lithium battery handling label on every parcel containing batteries. Tape over terminals, no chance of short-circuit.
FAQ
Can I post a laptop by Royal Mail?
Yes, on the Tracked 24/48 services with a lithium battery label.
Can I send a power bank?
In-device only. Loose power banks are largely prohibited.
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