A 21700 pack runs higher currents per cell, which makes strip resistance the number to watch — at 0.096 μΩ·m, pure nickel keeps it low. Our nickel strip for 21700 battery is produced in Ni201 (≥99.0% Ni) and Ni200 grades, in battery widths of 2-15 mm with custom sizes locked against your drawing. Every batch is made on our own nickel-only line, inspected per batch and shipped with EN 10204 3.1 mill test certificates from an ISO 9001 certified facility — 5 kg MOQ, 7-15 day delivery.

Strip is produced in thicknesses of 0.05-0.5 mm (hot-sale 0.15/0.2 mm) and battery widths of 2-15 mm for 21700 pack layouts. Pattern geometry, available space and tolerances are confirmed against the drawing before production and locked in the batch record.

• Low resistance for 21700 currents — 0.096 μΩ·m (20 °C) keeps connection loss small at higher per-cell current.
• Ni201 at ≥99.0% Ni — the 99% purity grade for battery strip, per catalog.
• Custom widths for 21700 layouts — 2-15 mm battery series, per drawing.
• Clean welding surface — bright, burr-free strip for consistent spot welds.
• Documented supply — EN 10204 3.1 MTC, ISO 9001 certified, 7-15 day delivery.

21700 cells carry higher current than 18650 cells of the same chemistry, so connection resistance becomes a larger share of total pack loss. Strip at 0.096 μΩ·m (20 °C) keeps that loss low and uniform across the pack.

Ni201 holds ≥99.0% Ni with ≤0.02% carbon. For battery strip, the high nickel content keeps resistance and impurity effects consistent, while the low carbon budget supports stability in packs that run warm.

21700 packs use wider cell spacing than 18650, which changes strip length and pitch requirements. Widths of 2-15 mm are standard, with custom lengths, pitches and pattern layouts produced per drawing.

The bands above are indicative for standard strip sizes. Battery strip is quoted per drawing — grade, thickness, width, pattern and quantity determine the final price.

Quality control starts at the melt: raw material composition is verified against UNS N02201/N02200 before rolling, then every batch is gauged for thickness, width and surface condition, and punched patterns are checked for burr and dimensional accuracy against the drawing. Batch records link each order back to the melt, and EN 10204 3.1 mill test certificates ship with every consignment.

• ASTM B162 — nickel and nickel alloy plate, sheet and strip
• GB/T 2072-2020 — nickel and nickel alloy strip
• EN 10204 3.1 mill test certificates accompany shipments

Battery strip is supplied in rolls or cut lengths, edge-protected and moisture-wrapped, then packed in cartons and export wooden cases. Documentation — mill test certificates, batch records and packing lists — accompanies every order, with a standard lead time of 7-15 days from confirmed drawing.

Bigger cells carry bigger responsibility: a 21700 pack leans on strip consistency more than a smaller cell pack does. DLX Alloy has run a nickel-only line since 2002 — 12,000 m² of floor space, 1,200 t/yr rated capacity, ISO 9001 certified and SGS audited — rolling and punching battery strip to per-drawing tolerances, with per-batch composition analysis and EN 10204 3.1 mill test certificates on every shipment.

21700 cells carry higher current per cell, so strip resistance and cross-section matter more; 21700 packs also use wider cell spacing, which changes strip length and pitch.

Pure nickel strip holds electrical resistivity at 0.096 μΩ·m (20 °C) — low and uniform along the strip, keeping connection loss small under load.

Battery width series of 2-15 mm; custom widths, lengths and pitches produced per drawing.

Yes. Mill test certificates, batch composition and dimensional records ship with every order, along with ISO 9001/SGS certificates.

5 kg; sample and trial quantities can be discussed per request.