Can You Post Lithium Batteries by Courier in the UK? The Rules Explained

Try posting a laptop battery through Royal Mail and you'll find out fast: it's not happening. Lithium batteries, loose or fitted inside equipment, are classed as dangerous goods, and that single fact rules out most of the delivery options people try first. This is the question we get asked most often by businesses shipping electronics, e-bikes, medical equipment and anything else with a lithium cell inside it, so here's the actual answer, not the vague version.

Why lithium batteries are restricted

Lithium batteries can short circuit, overheat and in rare cases catch fire if they're damaged, crushed or packaged incorrectly. That risk is higher in an aircraft hold or a van packed with other parcels, which is exactly why they're governed by international dangerous goods regulations rather than treated like a normal parcel. In the UK, that means the ADR regulations for road transport, and specifically a classification called UN3480 for lithium-ion batteries shipped on their own, or UN3481 for batteries packed with or inside equipment.

What UN3480 and UN3481 actually mean

These are UN numbers, a standard classification used to identify exactly what's being shipped and what packaging and paperwork rules apply to it. In practice, this means:

• The batteries need to be packaged to prevent short circuits, usually with terminals taped or capped and each battery separated so they can't contact each other.
• The outer packaging needs the correct hazard labelling for the battery type and quantity being shipped.
• Depending on the size and quantity, the shipment may need a declaration document confirming it's been packaged and labelled correctly.

None of this is paperwork you can improvise on the day. It needs to be right before the driver arrives, which is why we ask for the battery type and quantity when you book, rather than finding out at collection.

Why most couriers turn the job away

Handling dangerous goods correctly means training drivers, carrying the right packaging materials and knowing the paperwork inside out. Most general courier services aren't set up for that, so rather than risk getting it wrong, they simply won't take the job. That leaves businesses that regularly ship batteries, e-bike retailers, electronics repair shops, medical device companies, stuck without a reliable option.

What we actually need from you before collection

When you call to book a lithium battery job, expect us to ask:

• Whether the batteries are loose, or packed with or inside equipment
• The battery type and watt-hour rating, if known
• How many units are being shipped
• How they're currently packaged

We confirm the job can be taken and talk through anything that needs sorting before the driver sets off, not after. Once that's confirmed, collection and delivery run on the same same-day standard as everything else we move.

The short version

Lithium batteries can be couriered legally in the UK, but only with the right packaging and paperwork, and only by a courier actually set up to handle dangerous goods. If your usual courier has said no, that's almost always why.

Common questions