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Slotted 18650 Battery Case Set: Engineered for Easy Assembly & Maximum Safety
Our all-in-one set combines a precision slotted pre-nickel-plated steel shell, reliable explosion-proof cap, and premium insulation gaskets—designed to solve electrode tab alignment pain points while ensuring top-tier battery performance.
Product Overview
The Slotted 18650 Cylindrical Battery Case Set is a game-changer for 18650 lithium-ion battery manufacturing. Unlike standard cases that require complex tab positioning, this set features a precision slotted steel shell that aligns electrode tabs effortlessly—cutting assembly time by 40% and reducing tab damage risks. Each set includes 1x pre-nickel-plated slotted steel shell, 1x explosion-proof safety cap, and 2x upper/lower insulation gaskets—all pre-matched to 18650’s standard dimensions (18mm diameter × 65mm height). Crafted for consumer electronics, portable power tools, and small energy storage devices, this set balances ease of production, durability, and safety in every component.
Core Components: Innovation in Every Detail
1. Pre-Nickel-Plated Slotted Steel Shell
Precision Slot Design: 2-4 pre-cut slots (width: 1.5-2.0mm) align perfectly with electrode tabs, eliminating manual positioning errors and tab bending.
Pre-Nickel Plating: 3-5μm nickel coating enhances solderability, corrosion resistance, and electrical conductivity—ideal for automated welding processes.
High-Strength Material: 304 stainless steel with 0.22-0.3mm wall thickness, withstands impact and pressure without deformation.
Smooth Inner Finish: Polished inner surface prevents damage to battery cores during assembly and improves electrolyte wettability.
2. Explosion-Proof Safety Cap
Pressure-Activated Relief: Triggers at 1.1-1.4MPa to release excess gas, preventing battery explosion due to overcharging or short circuits.
Low-Resistance Core: Copper core with tin plating ensures contact resistance ≤4mΩ, minimizing energy loss during charge-discharge.
Leak-Proof Sealing: Heat-resistant silicone O-ring creates an airtight seal with the steel shell, stopping electrolyte leakage.
Drop-Test Certified: Passes 1.5m drop test without cap detachment, ensuring structural stability in harsh conditions.
3. Insulation Gaskets
High-Temperature Resistance: Made of flame-retardant PP material, stable at -40℃ to 130℃—meets UL94 V-0 flammability standard.
Precision Die-Cut: Custom-fit to 18650 dimensions, covering tab connections to prevent short circuits between positive/negative electrodes.
Thickness Optimization: 0.18-0.22mm thickness balances insulation performance and battery energy density.
Anti-Ageing Property: Resists electrolyte erosion and oxidation, maintaining insulation effectiveness for over 5 years.
Technical Specifications
Component
Parameter
Specification
Slotted Steel Shell
Material
Pre-Nickel-Plated Steel
Dimensions
Φ18mm × 65mm
Wall Thickness
0.22-0.3mm
Nickel Plating Thickness
3-5μm
Slot Quantity/Size
2-4 slots, 1.5-2.0mm width
Explosion-Proof Cap
Pressure Relief Value
1.1-1.4MPa
Contact Resistance
≤4mΩ
Sealing Material
Silicone O-ring
Insulation Gaskets
Material
Flame-Retardant PP
Thickness
0.18-0.22mm
Flammability Rating
UL94 V-0
Why This Set Stands Out for Your Production
Slotted Design for Efficiency: Pre-cut slots eliminate manual tab alignment, cutting assembly labor costs and reducing production errors by 50%.
Pre-Nickel Plating Advantage: Improves welding efficiency and conductivity, compatible with automated spot welding and laser welding lines.
All-in-One Compatibility: Components are pre-matched to avoid fitment issues—no need to source shells, caps, and gaskets from multiple suppliers.
Strict Quality Assurance: Each set undergoes dimension inspection, pressure testing, and insulation resistance testing—100% qualified before shipment.
Scalable Supply: Annual production capacity of 400 million sets, supporting small-batch trials and large-scale mass production.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
2016
Total Annual:
3000000-5000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
GUANGDONG XWELL TECHNOLOGY CO., LTD. is a high-tech enterprise specializing in intelligent equipment design, production and sales, providing mechanical engineering technology design and consulting services, electronic engineering design and consulting services. XWELL's core team was established ... GUANGDONG XWELL TECHNOLOGY CO., LTD. is a high-tech enterprise specializing in intelligent equipment design, production and sales, providing mechanical engineering technology design and consulting services, electronic engineering design and consulting services. XWELL's core team was established ...
