Battery Insulation Rings (also called positive terminal insulating gaskets) are used to protect the positive side of lithium-ion cells such as 18650, 21700, 26650, and 32650 batteries. They help prevent short circuits between the positive terminal and the metal battery can.
Product Name:Battery Insulation Ring / Positive Insulator Gasket
Battery Compatibility:18650, 21700, 26650, 32650
Application:Positive terminal insulation
Material:Fish paper, insulating fiber, PET, or PP
Shape:Circular ring
Color:Green
Thickness:0.20 mm – 0.50 mm
Heat Resistance:High temperature resistant
Adhesive Type:Self-adhesive / glue attached
Insulation Property:High dielectric insulation
Diameter Options:Depends on battery size
Function:Prevents short circuits and metal contact
Usage:Battery pack assembly, repair, rewrapping
Main Features
Strong electrical insulation
Heat resistant
Easy peel-and-stick installation
Lightweight and durable
Prevents nickel strip shorting
Improves lithium battery safety
Common Applications
DIY battery pack building
Spot welding protection
Rewrapping damaged cells
E-bike battery packs
Solar battery storage systems
Power tools and robotics