Description
Overview
The 18650 Battery Terminal Insulator Rings are high-quality fish paper protective rings, designed to insulate and reinforce the positive terminal of 18650 lithium-ion batteries. Made from heat-resistant, non-conductive fish paper, these rings provide enhanced electrical insulation, reducing the risk of short circuits, electrical arcing, and accidental metal contact.
Perfect for battery pack builders, DIY enthusiasts, and professionals, these insulator rings are essential for safe battery rewrapping, repairs, and custom pack assembly.
Key Features
Specifications
| Specification | Details |
|---|---|
| Product Type | 18650 Battery Terminal Insulator Rings |
| Quantity | 20 Pieces per Pack |
| Compatibility | 18650 Lithium-Ion Batteries |
| Material | High-Temperature Fish Paper |
| Color | White |
| Inner Diameter | ~10mm |
| Outer Diameter | ~18mm |
| Thickness | ~0.3mm |
| Weight (per ring) | ~0.1g |
Applications
The 18650 Battery Terminal Insulator Rings are widely used for:
Safety Guidelines & Warnings
IMPORTANT SAFETY NOTICE ️
The 18650 Battery Terminal Insulator Rings are designed for electrical insulation and protection. Improper installation or battery mishandling may result in fire, explosion, or injury.
General Safety Guidelines
Prohibited Uses & Handling
User Responsibility & Risk Acknowledgment
- The user assumes full responsibility for proper handling, installation, and storage of these insulator rings.
- Misuse or improper application may result in serious injury or damage—always follow manufacturer recommendations.
- No guarantee of compatibility with modified or non-standard battery sizes is provided.
- Usage of this product is at your own risk.
By purchasing and using the 18650 Battery Terminal Insulator Rings – Black Fish Paper (20pcs), you acknowledge and agree to follow all safety guidelines. Failure to comply may result in hazardous consequences.
Ensure safe battery usage with high-quality insulation! ⚡
Frequently Asked Questions
Yes. All cells we sell are guaranteed authentic, Grade A, and brand new. Not reclaimed, used, or rewrapped. We also prioritize fresh manufacturing dates, so you’re not receiving cells that have been sitting around for years.
Some sellers offer Grade B cells that can have inconsistent voltage, higher internal resistance, reduced performance, or other issues. You will never receive a Grade B, reclaimed, or used cell from us.
These are sold as bare cells (no welded tabs or leads) unless the listing explicitly states otherwise.
To make pack building easier, our cells are sorted and batched for matching internal resistance, voltage, and date code, so they arrive ready to be assembled into a pack.
U.S. orders ship from Atlanta, Georgia.
For international orders outside the USA, we may ship from a different fulfillment hub depending on the product’s manufacturing location, to ensure faster and more efficient delivery.
Shipments within the USA, delivery in 1–3 days (up to 5). Expedited shipping available. International shipping varies—contact us to inquire.

