Li-ion Battery Cell Insulation Gasket Pack

Protect your custom battery builds against short circuits with this 20-piece Li-ion battery cell insulation gasket pack. Crafted from heavy-duty barley adhesive paper (fish paper), these precision die-cut rings fit securely around the positive terminal pads of 18650, 21700, and 26650 lithium-ion cells. Featuring high electrical insulation properties and strong heat resistance, these self-adhesive battery terminal insulating pads prevent nickel strip welding from tearing through outer cell wraps, guaranteeing safer battery pack assembly.

Key Features

• High-Grade Barley Adhesive Paper: Premium electrical insulation paper offers superior heat resistance, dielectric strength, and tear protection.

• Strong Self-Adhesive Backing: Sticks firmly to positive battery tops without peeling or shifting during pack spot welding.

• Cell-Specific Precision Fit: Custom-sized center cutouts isolate the positive cap terminal while covering the negative shoulder rim.

• 20-Piece Pack: Convenient count ideal for small pack repairs, e-bike battery builds, and custom DIY power banks.

• Prevents Critical Short Circuits: Shields vulnerable cell shoulders against nickel strip rubbing and heat damage from welding.

Why Choose Our Battery Insulation Gaskets

Standard heat-shrink wraps can degrade or tear during spot welding and extended use. These dense barley paper gaskets create an extra thermal and electrical barrier between the positive terminal and outer negative casing, preventing catastrophic electrical shorts in high-drain battery setups.

Perfect For

• Custom Li-ion Battery Packs: Essential component for building e-bike, scooter, solar storage, and power tool battery packs.

• Spot Welding Protection: Provides a protective cushion against heat and pressure when spot-welding nickel strips to cells.

• Cell Re-Wrapping & Repair: Replaces worn or damaged original insulation rings during battery maintenance.

Product Specs

• Material: Electrical Grade Barley Paper (Fish Paper) with Adhesive Backing

• Compatible Cell Formats: 18650 / 21700 / 26650

• Features: High Dielectric Strength, Flame-Retardant, Self-Adhesive

• Style: Positive Terminal Ring Insulation Gasket

• Quantity: 20-Piece Pack

Ensure maximum safety and durability for your custom battery packs with our Li-ion Battery Cell Insulation Gasket Pack today.