Sourcing battery-grade copper foil from China

0% duty on battery-grade copper foil

Read from the UK Trade Tariff on 25 October 2026, heading 7410 covers copper foil not exceeding 0.15 mm thick, excluding backing. Other unbacked refined copper foil is listed under 7410 11 00 90. The alloy and backed rows are alternatives only where the supplied material matches those descriptions; they are not interchangeable specifications for ordinary battery foil.

The supplied tariff record shows 0% duty for goods from China on every line, with no anti-dumping or countervailing duty. No import controls are listed for the table rows. For 7410 11 00 90, it also lists a 0% autonomous suspension limited to electrolytically manufactured refined copper foil and strips at least 0.015 mm thick, excluding mixtures, preparations and products made up of different components containing them.

Confirm composition, thickness, backing and intended use through finding your commodity code. The separate electrolytic foil line for printed circuit board manufacture should not be selected merely because battery foil is electrolytic. See the wider copper foil and clad laminate guide for other products within this heading.

Specify foil for your battery process

Specify electrodeposited or rolled annealed foil, copper composition, thickness and tolerance, width, roll length, weight per area, tensile strength, elongation and surface roughness. Identify each surface and its treatment. Agree sample test methods and acceptance criteria with the battery production team before approving the production specification.

Ask for the composition of surface treatments as well as the copper. UK REACH restrictions can limit, ban or impose conditions on substances being placed on the market or used. Check the proposed treatment against applicable restrictions before accepting it.

Approve samples through your coating, drying and handling process. Record which surface receives the electrode coating, and agree roll cores, winding direction, moisture protection and lot identification. Use factory verification to assess the supplier's measurement and test capability.

Worked duty example

Illustrative example, not a quote: Illustrative trial consignment of battery-grade copper foil rolls under 7410 11 00 90, invoiced at £7,760 free on board, with £2,200 of freight and insurance to the UK. The customs value is £9,960. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £9,960, so it is £1,992. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Dimensions: check thickness across the width and along sampled roll lengths, then compare width and weight per area with the agreed specification.

Properties: match roll identifiers to batch certificates for copper composition, tensile strength, elongation and roughness; independently test critical properties.

Surface: inspect for pinholes, wrinkles, oxidation, scratches and contamination, including the surface intended for coating.

Packing: check moisture seals, desiccant, core support and roll-end protection; photograph dents and damaged wrapping before unpacking.

What goes wrong

A description such as battery-grade does not define the foil's acceptance criteria. Uneven thickness, pinholes and wrinkles can make material unsuitable for the buyer's process. Oxidation or an unagreed surface treatment can also change coating performance. Compare delivered rolls with the approved sample and specification rather than relying on the product name.

Poor core support and packing can dent rolls or deform their edges. Keep affected rolls separate, retain their labels and certificates, and record defects before processing. Agree checks before dispatch using the quality inspection guide.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.