100PCS/500PCS 21700 1S Battery Insulation Ring for 21700 Battery Insulation Cardboard Rubber Pad for Power Bank/Power Tools

Description21700 Battery Insulator RingFeatures1. Insulation SafetyThe hollow design of the insulating spacer can effectively isolate the positive and negative terminals of the battery, preventing short circuits and current leakage, thus significantly improving the safety of the battery.2. High DurabilityMade of high-quality materials (such as PVC or nylon) with excellent heat resistance and anti-aging properties, they can be used for a long time without damage.3. Strong AdhesionThe insulating spacer is designed as a stickable type, which can be firmly fixed on the surface of the battery to ensure that it will not fall off during use.4. Smooth surface (Smooth Surface)The smooth surface of the hollow spacer reduces friction and wear while allowing for easy installation and removal.5. Strong adaptability (Universal Fit)Accurately fits 21700 batteries for a wide range of battery packs and DIY projects.