18650 Battery Insulator Rings – Precision Cut, Adhesive Fish Paper (550pcs)

Upgrade your 18650 battery builds with precision-cut insulator rings.

Unlike generic rings that shift or leave gaps, our custom-cut 18650 adhesive fish paper rings are designed to fit perfectly on the positive terminal of 18650 cells. This ensures maximum safety, easier assembly, and a more professional finish.

• Perfect Fit: Precision cut to sit exactly on the positive side of 18650 batteries – no sliding or misalignment.
• Adhesive Backing: Easy peel-and-stick application keeps rings secure during spot welding and pack assembly.
• Durable Fish Paper: Made from high-grade, heat-resistant insulation paper to prevent short circuits.
• Safe & Reliable: Designed for professional battery pack builders, DIY projects, e-bikes, power tools, and more.
• Better Than Standard: Most Amazon rings are cut too loose. Ours are crafted to fit snugly, saving time and reducing risk.

Specifications:

• Type: 18650 Battery Insulator Ring
• Material: Fish paper with adhesive backing
• Outer Diameter: 17.8mm
• Inner Diameter: 10.5mm
• Thickness: 0.2mm
• Quantity: 550pcs per pack

Package Includes: 550 × 18650 Adhesive Fish Paper Insulator Rings