Pre-Slotted 21700 Battery Case Kit (Pre-Nickel-Plated Steel) with Insulation Gaskets & Explosion-Proof Cap

Streamline your battery assembly process with our high-performance 21700 slotted battery case set—engineered for safety, precision, and convenience, tailored to meet the demands of modern energy storage and device manufacturing.

Every set comes fully equipped with essential parts to get your production up and running:

• 21700 Slotted Cylindrical Steel Shell: Crafted from pre-nickel-plated steel, offering excellent corrosion resistance and electrical conductivity. The pre-slotted design (done via professional grooving machinery) eliminates the need for on-site slotting, saving you time and reducing production hassle.
• Explosion-Proof Cap: Integrates reliable safety mechanisms to prevent overpressure risks, safeguarding your battery cells and end products during operation and storage.
• Insulation Gaskets: High-quality insulating materials ensure optimal isolation between components, avoiding short circuits and enhancing overall battery stability.

• Ready-to-Assemble Convenience: The pre-slotted shell skips the tedious step of manual or in-house slotting, cutting down your assembly time by up to 30% and boosting production efficiency.
• Superior Build Quality: Adopts CNC precision stamping and drawing processes for uniform wall thickness (0.2-0.3mm), smooth inner/outer surfaces, and consistent dimensional accuracy—perfectly fitting automated assembly lines.
• Reliable Safety Assurance: From the corrosion-resistant pre-nickel-plated steel to the explosion-proof cap and insulation gaskets, every component is designed to prioritize safety, minimizing failure risks.
• Universal Compatibility: Specifically designed for the 21700 cylindrical battery format (21mm diameter × 70mm height), compatible with most standard 21700 cells and widely used in power tools, energy storage systems, electric vehicles, and more.

Whether you’re a small-scale manufacturer or a large enterprise, our 21700 slotted case set delivers tangible value:

• Eliminates extra processing steps and equipment investment for slotting.
• Ensures consistent product quality with precision-manufactured components.
• Enhances battery reliability with strict quality control on materials and craftsmanship.
• Supports customization for specific slot sizes, thicknesses, or branding needs—just let us know your requirements.

• Model: 21700 (slotted version)
• Material: Pre-nickel-plated steel
• Dimensions: 21mm (diameter) × 74mm (case height)
• Wall Thickness: 0.2-0.3mm
• Components: Slotted steel shell + explosion-proof cap + insulation gaskets
• Compatibility: Automated battery assembly lines, 21700 lithium-ion battery cells

Upgrade your battery production with a reliable, efficient, and safe housing solution. Contact our sales team today to get a quote, discuss customization options, or learn more about how this set can fit your specific application!