heat resistant battery module protection

21700 Lithium Battery 3 Cell Solid Fish Paper Insulation Washer with Adhesive Backing

Product Description: 21700 Lithium Battery 3 Cell Solid Fish Paper Insulation Washer with Adhesive Backing This 3-cell solid fish paper insulation washer is specially designed for 21700 cylindrical lithium battery packs . Made from high-quality fish paper (vulcanized fiber insulation material) , it provides excellent electrical insulation, flame retardant protection, and mechanical strength for battery module assembly. The adhesive backing design allows quick and accurate