18650 Battery Insulator Rings – Adhesive Fish Paper 200 / 400 / 600 pcs

<p><strong>Precision-fit 18650 battery insulator rings</strong> made from heat-resistant fish paper with a peel-and-stick adhesive backing. Designed to sit securely on the positive terminal of standard 18650 lithium-ion cells to help prevent shorts during spot welding and pack assembly.</p>

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<strong>Perfect fit for 18650 cells</strong> – sized to reduce shifting or misalignment.</li>
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<strong>Adhesive backing</strong> – peel &amp; stick design for fast, clean installation.</li>
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<strong>Durable fish paper</strong> – high dielectric strength and heat resistance.</li>
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<strong>Ideal for DIY builders</strong> – battery packs, e-bikes, flashlights, power tools, and electronics projects.</li>
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<p><strong>Specifications</strong><br>
Material: Fish paper (adhesive-backed)<br>
Outer Diameter: ~17.8 mm<br>
Inner Diameter: ~10.5 mm<br>
Thickness: ~0.2 mm<br>
Quantity Options: 200 / 400 / 600 pieces</p>

<p><strong>Note:</strong> Always verify compatibility with your specific 18650 cells before use. Intended for experienced builders and electronics enthusiasts.</p>

<p>—<br>
Download <strong>RenewSpark Tools</strong> on the iOS App Store — the toolbox I use for battery building.
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