CR1820 Stainless Steel Coin Cell Cases with Separate O Ring Gaskets

Product Overview

This coin cell hardware set provides a standardized, high-integrity encapsulation platform engineered specifically for electrochemical testing and next-generation battery chemistry research. Fabricated from premium 304 stainless steel and paired with a high-purity polypropylene insulating gasket, the assembly includes a precision-stamped top cap and bottom cup designed to maintain mechanical stability and prevent electrolyte leakage under rigorous cycling protocols.

Designed primarily for academic institutions, energy storage laboratories, and corporate R&D centers, this unit delivers the geometric consistency required for repeatable half-cell and full-cell characterization. The hardware accommodates various electrode discs, separators, and liquid or gel electrolytes, facilitating reliable performance evaluations across lithium-ion, sodium-ion, and solid-state battery configurations.

Engineered to withstand broad operational temperatures and aggressive electrolyte formulations, the component design ensures steady internal stack pressure and optimal electrical contact. By eliminating structural deformation and micro-leakage risks, this assembly gives researchers full confidence in their long-term cycling, rate capability, and impedance spectroscopy datasets.

Key Features

• High-Purity 304 Stainless Steel Construction: Delivers superior mechanical strength, dimensional rigidity, and broad chemical resistance against aggressive non-aqueous liquid electrolytes and standard battery solvents.
• Precision Independent PP O-Ring Gasket: Features a dedicated polypropylene sealing ring that provides robust electrical insulation between the positive and negative terminals while maintaining an airtight, leak-free hermetic seal under continuous crimping pressure.
• Optimized Dimensional Tolerances: Tight manufacturing tolerances on the cap outer diameter (18.46 mm) and cup base (16.78 mm) ensure seamless alignment and consistent internal volume across high-throughput test batches.
• Superior Corrosion Resistance: Withstands high operating voltages and corrosive decomposition products, minimizing stray parasitic reactions and background currents during sensitive electrochemical impedance spectroscopy (EIS) measurements.
• Uniform Current Distribution: Smooth, burr-free internal and external contact surfaces promote uniform interfacial contact with current collectors, wave springs, and spacer discs to reduce contact resistance.
• Standardized Form Factor Compatibility: Fully compatible with industry-standard manual, pneumatic, and electric coin cell crimping machines, ensuring effortless integration into existing laboratory assembly lines.
• High Thermal and Electrochemical Stability: Maintains structural and sealing integrity across wide operating temperature windows, supporting low-temperature and elevated-temperature battery testing regimes.

Applications

Technical Specifications

Why Choose This Product

• Micro-Tolerance Manufacturing: Every batch is stamped and machined under rigorous quality control standards, ensuring exact wall thickness and diameter uniformity that eliminate crimp jamming and irregular seal compression.
• Uncompromising Hermetic Reliability: The precision-matched polypropylene O-ring creates an impermeable barrier against electrolyte leakage and oxygen/moisture ingress, protecting reactive alkali metals inside the cell.
• Electrochemical Data Fidelity: Premium SS304 raw materials minimize trace elemental impurities, preventing anomalous redox peaks and ensuring that measured electrochemical responses originate solely from active materials.
• Seamless Laboratory Scalability: Standardized dimensions ensure smooth compatibility with automated glovebox assembly lines, multi-channel battery cyclers, and standard crimping dies without requiring custom tooling.

Contact our technical sales team today to request a quote, verify compatibility with your crimping equipment, or discuss bulk packaging options for your laboratory workflow.

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