Battery Insulation Paper Gasket for 18650 / 21700 / 32650 Li-ion Cells – Barley Paper Insulating Patch

The Li-ion Battery Insulation Paper Gasket (Barley Paper) is a critical safety component used in battery pack manufacturing and repair. Designed to be placed on the positive terminal or between cells, this insulating patch helps prevent short circuits, thermal damage, and electrical leakage.

Manufactured from high-temperature resistant barley paper, it offers excellent electrical insulation, durability, and flame resistance. The self-adhesive backing ensures quick, clean, and secure application during battery pack assembly.

This insulation paper is widely used in 18650, 21700, and 32650 lithium battery packs for applications such as EV batteries, power tools, energy storage systems, laptops, robotics, and DIY electronics projects.

Key Features

• 🧯 High Temperature Resistance – Suitable for demanding battery environments

• ⚡ Excellent Electrical Insulation – Reduces risk of short circuits

• 🔥 Flame Retardant Barley Paper – Enhanced safety for Li-ion cells

• 🧲 Strong Adhesive Backing – Easy and secure placement

• 🔋 Multi-Cell Compatibility – Fits 18650, 21700 & 32650 batteries

• 🛠️ Professional & DIY Friendly – Ideal for pack assembly and repair

Technical Specifications

• Product Type: Battery Insulation Gasket / Insulating Patch

• Material: Barley Paper (Electrical Insulation Grade)

• Adhesive: Self-Adhesive Backing

• Compatible Cell Sizes:

  • 18650 Li-ion

  • 21700 Li-ion

  • 32650 Li-ion

• Heat Resistance: High

• Flame Retardant: Yes

• Color: Natural / Insulation Paper Finish

Applications

• Li-ion battery pack assembly

• EV & energy storage batteries

• Power tools and UPS systems

• Laptop and electronics batteries

• Robotics, IoT & DIY battery projects

• Battery repair and refurbishment

What’s in the Box

• Battery Insulation Paper Gaskets (as per selected quantity)