18650 and 21700 Battery Insulation Gasket Pads 100 Piece Set

Build cleaner, safer battery packs with these battery insulation gaskets designed for cylindrical lithium-ion cells. The adhesive barley paper pads create an insulating layer around the positive electrode area, helping reduce accidental contact during assembly. Choose the matching 18650 or 21700 size for a precise fit. These 18650 insulation rings are practical for battery builders, repair technicians, and electronics hobbyists.

Key Features

• Includes 100 pre-cut hollow insulation pads
• Adhesive backing supports quick peel-and-stick placement
• Barley paper provides electrical insulation without excessive bulk
• Available for compatible 18650 or 21700 cylindrical cells
• Useful for organized DIY battery-pack assembly

Why Choose Our 18650 and 21700 Battery Insulation Gasket Pads

Unlike manually cut insulation sheets, these 21700 battery insulator pads arrive in ready-to-apply shapes for faster, more consistent installation. Their hollow design leaves the terminal contact area accessible while covering the surrounding metal surface. Similar barley paper rings are widely used to help prevent unintended short circuits in battery packs.

Perfect For

Ideal for DIY lithium battery packs, cell replacement projects, power-bank repairs, e-bike batteries, power-tool packs, flashlights, and electronics workshops.

How to Use

Clean and dry the battery surface, peel off one gasket, align it around the positive terminal, and press firmly. Select the correct size before installation and follow proper lithium-battery handling procedures.

Product Specs

Quantity: 100 pieces
Material: Adhesive barley paper
Style: Hollow insulation gasket
Compatibility: Selected 18650 or 21700 cells
Application: Positive electrode insulation

Protect Every Battery Build

Add dependable lithium battery insulation pads to your workshop supplies and complete battery-pack projects with cleaner, more consistent protection.