Battery connection strip comes in two format families. Narrow tab strip (2-15 mm) is slit to individual tab widths and welded cell by cell; wide strip like this 49.5 mm format carries a pre-punched or pre-patterned 2P layout, so one strip bridges two parallel cells at once and reduces handling on the assembly line. The choice is a volume question: wide patterned strip suits batch assembly where weld layout is fixed, while narrow tab stock suits flexible or mixed packs. This page supplies the wide 49.5 mm format for 18650 2P connection — if your pack uses a different cell or configuration, the same nickel strip is available in other widths and patterns per drawing.

Note: standard strip orders start at a 5 kg MOQ; N4 high-purity strip at 3 kg. The thickness and dimensions can be produced to customer requirements — submit your drawing for confirmation.

• 2P pattern for 18650 pairs — 49.5 mm width with 19.5 mm pitch matches two parallel cells in one strip, saving assembly work.
• Low resistance — resistivity of 0.096 μΩ·m makes the battery pack more powerful and saves energy.
• Easy welding, stable connection — pure nickel's good spot-welding properties give strong, repeatable welds.
• Bright surface — clean, bright finish supports weld contact and consistent penetration.
• Good tensile strength and workability — easy to operate in assembly, with corrosion resistance and magnetic properties inherent to pure nickel.

Two 18650 cells side by side define the pitch: the strip's 19.5 mm pitch distance matches the cell spacing, and the 49.5 mm width covers the pair plus weld land. Using a pre-sized wide strip instead of individual tabs cuts handling steps and keeps weld positions consistent across the row — the geometry is locked by the strip, not by the operator.

In a 2P configuration two cells share the connection, so the strip carries the combined current path. Low resistance (0.096 μΩ·m) limits heating at the weld joint, and the 19.5 mm pitch keeps the weld points on the cell terminals rather than across the gap. Custom pitch and width are available per drawing; tell us your cell spacing and row layout and the pattern will be confirmed before rolling.

All four grades are commercial-purity nickel, not alloys, and all weld cleanly in resistance spot welding. Ni201 (≥99.0% Ni, C ≤0.02%) is the low-carbon choice for battery service; Ni200 (≥99.2% Ni, C ≤0.15%) is the economical standard; N4 (≥99.9%) and N6 (≥99.5%) follow the GB designation system. Purity and carbon affect weld behaviour and long-term corrosion, not conductivity — specify the grade your drawing calls out, and the mill certificate will state the actual chemistry.

Spot welding is decided at the surface: oil, oxide and burrs are the first causes of failed welds. This strip is produced with a bright, clean surface and checked per batch for composition, thickness, width and surface condition. The production process — melting, rolling, heat treatment, finishing and testing — is run in-house, and batch records accompany the shipment so the next coil welds like the first.

Every batch passes chemical composition analysis, thickness and width measurement, mechanical property testing and surface inspection before release. Surface cleanliness at the weld zone is checked specifically — burrs, oil and oxide are the first causes of failed tab welds — and batch records accompany the shipment.

• Ni200 / Ni201 strip — ASTM B162 (Nickel Plate, Sheet and Strip)
• N4 / N6 strip — GB/T 2072-2020 (Nickel and Nickel Alloy Strip and Foil)
• Export documentation — EN 10204 3.1 MTC

• Standards: ASTM B162; GB/T 2072-2020; EN 10204
• Industry literature: ASM Specialty Handbook: Nickel, Cobalt, and Their Alloys (ASM International); Nickel Institute corrosion and application guides
• Primary sources: factory catalog, mill test certificates (EN 10204 3.1), ISO 9001 / SGS certifications

Strip is supplied spooled with carton box or coiled with polybag, with edge protection as required. Delivery is 7-15 days for standard production, 3-7 days for small in-stock quantities, and 15-30 days for complex custom requirements confirmed against your drawing.