INSULATION RING – 21700 (+) RING

is a high-quality insulating gasket specially designed for 21700 lithium-ion battery cells. It is installed on the positive (+) terminal to provide reliable electrical insulation and enhanced safety during battery pack assembly and operation.

This insulation ring helps prevent short circuits by isolating the positive terminal from nickel strips, bus bars, and other conductive components. Made from durable, heat-resistant insulating material, it can withstand spot-welding heat and high-current conditions, ensuring safe and stable performance.

Precisely engineered for a perfect fit on 21700 cells, the ring is lightweight, easy to install, and remains securely in place—making it an essential safety component for professional and DIY lithium-ion battery pack builders.

Key Features

Cell Compatibility: 21700 lithium-ion battery

Terminal Protection: Positive (+) insulation

Material: Heat-resistant, high-durability insulating material

Fit: Accurate and secure fit on 21700 terminals

Function: Prevents short circuits and electrical contact

Benefits

Enhances battery pack safety

Reduces risk of positive terminal shorting

Protects cells during welding and operation

Easy to install and lightweight

Reliable insulation for long-term performance