Material: PVC (Polyvinyl Chloride)
Flat width: 70 mm
Roll length: 30 meters
Color:blue
Shrink temperature: Approximately 80–120 °C (varies by manufacturer)
A 70 mm flat-width sleeve is also suitable for wrapping small battery packs made from multiple cells, depending on the pack's overall dimensions.

What it is used for
Battery manufacturers and hobbyists use this tubing to:
Replace damaged battery wrappers
Insulate exposed metal surfaces
Build custom lithium-ion battery packs
Improve the appearance of battery packs
Reduce the risk of accidental short circuits

How it works
Cut the required length from the 30 m roll.
Slide the PVC sleeve over the battery or battery pack.
Apply heat evenly with a heat gun.
The tubing shrinks tightly around the battery, creating a durable insulating cover.

Common applications
Rewrapping 18650, 21700, or 14500 cells
DIY battery pack construction
E-bike battery packs
Power tool battery packs
Solar energy storage batteries
Robotics and RC projects
Portable power banks

Advantages
Good electrical insulation
Lightweight and flexible
Protects against scratches and abrasion
Easy to apply with heat
Available in many colors for battery identification
Economical for high-volume battery assembly
Important safety note

PVC heat-shrink tubing provides insulation only. It does not repair damaged batteries or make unsafe cells safe to use. If a lithium-ion battery is swollen, leaking, dented, or has damaged terminals, it should be replaced rather than simply rewrapped. Also, avoid covering battery vent holes or safety features when assembling battery packs.