Coin Cell Spacer/Gasket

Coin Cell Spacer SS304/SS316 – 15.8mm Diameter, 0.2–1.0mm Thickness

This coin cell spacer is a precision-engineered component designed for CR20 series coin cell batteries, including CR2016, CR2025, CR2032, CR2430, and CR2450. It serves a critical filling function when the total thickness of the electrode stack is insufficient to maintain proper internal contact and compression.

 Spacer (filling function when the battery thickness is not enough)

Manufactured from high-grade SS304 or SS316 stainless steel, the spacer offers excellent corrosion resistance, flatness, and dimensional stability. With a standard diameter of 15.8 mm, it fits snugly inside the coin cell case without interfering with the sealing ring or edge sealing area.

Four thickness options are available to meet varying assembly requirements:

• 0.2 mm – Fine adjustment for minimal gap filling
• 0.5 mm – Standard thickness for most coin cell configurations
• 0.8 mm – Additional filling for thinner electrode stacks
• 1.0 mm – Maximum filling for single-electrode or half-cell setups

Spacer for Coin Cell Assembly

1.We can supply various types of coin cell cases(positive case+negative case), different thickness spacers and conical/cone springs.
2.It is mainly for lab battery research in university and institute.
3.The surface is smooth, without burr. 
4.Preferential price
5.OEM service

The spacer is typically placed between the spring and the negative case, or between the electrode and the positive case, depending on the cell stacking order. It ensures uniform pressure distribution, stable electrical contact, and reproducible electrochemical performance.

Each spacer is clean, burr-free, and ready for immediate use in glove-box environments. Ideal for lithium ion battery researchers, material scientists, and quality control laboratories.

LiBatteryEquip is a professional supplier specializing in complete Battery Laboratory Equipment,Lithium Battery Production Line, and Battery Testing Equipment. With over 20 years of experience in lithium battery material production, and battery equipment manufacturing, we provide customized lithium battery laboratory and pilot production line solutions for various research institutions and enterprises to meet their diverse needs. Our technical and management team possesses more than 20 years of expertise in the battery-related industry, consistently committed to delivering superior products and comprehensive services to our clients.