18650 / 21700 Nickel-Plated Steel Strip | Bracket-Free Battery Spot Welding Connector Tabs

These bracket-free nickel-plated steel strips are professional spot welding connector tabs specially designed for 18650 and 21700 lithium battery parallel assembly. Adopting advanced permeable nickel plating technology and Japanese slow-wire cutting craftsmanship, the tabs deliver uniform plating layer, stable conductivity and ultra-precise dimensional accuracy. With multiple standard hole pitches and optional thickness specifications, they support 2P, 4P and multi-cell parallel combinations, perfectly suited for mass battery PACK production and DIY energy storage battery assembly.

• Premium Permeable Nickel Plating Material Made of high-quality steel base with advanced permeable nickel plating process. The nickel layer features high consistency, strong bonding force, ultra-low internal resistance, no peeling, blistering or oxidation during long-term use. Ensures stable current transmission and long battery pack lifespan.
• Japanese Slow-Wire Cutting Precision All stamping molds are processed by Japanese slow-wire cutting equipment, achieving ultra-high dimensional accuracy with minimal assembly tolerance. The edges are smooth and burr-free, will never pierce battery insulation film, greatly improving assembly safety and yield rate.
• Professional Oil Removal Treatment All nickel strips undergo strict surface oil removal treatment. The ultra-clean surface provides excellent spot welding performance and solderability, ensuring firm welding points, no virtual welding, and consistent electrical conductivity for mass production.
• Flexible & Versatile Matching Multiple standard hole pitches and thickness options cover most 18650/21700 battery pack designs. Bracket-free structure simplifies assembly process, saves installation space, and supports customized multi-parallel combinations.

Widely used for 18650 and 21700 lithium battery pack assembly, energy storage battery modules, power tool batteries, portable power stations, DIY battery projects and other new energy battery connection systems.

We focus on high-precision battery nickel strip manufacturing. Strict raw material inspection, professional mold processing and standardized surface treatment guarantee stable batch quality. Our nickel tabs feature high safety, excellent weldability and low resistance, helping clients reduce production risks and improve assembly efficiency. Custom sizes and shapes are available to meet personalized PACK design requirements.