125mm PVC Heat Shrink Tubing for Battery Packs & Cable Wraps — Multicolor

Flat width is measured when the tubing is laid flat. A 125mm flat-width PVC heat shrink tube typically expands to fit objects with a circumference of up to approximately 250mm (≈9.8" circumference), which corresponds to a diameter of roughly 75–80mm (≈3") before shrinking. Always measure your battery pack or cable bundle's outer circumference before ordering to confirm fit.

PVC heat shrink tubing generally has a shrink ratio of approximately 2:1, meaning it shrinks to roughly half its expanded diameter when heat is applied. The exact ratio can vary slightly by batch; contact us if tight tolerances are required for your battery pack heat shrink tubing project.

This PVC heat shrink tubing typically activates at temperatures between 70°C–90°C (158°F–194°F). A heat gun set to low-to-medium is recommended. Avoid open flames, which can scorch or unevenly shrink the material and may damage the underlying assembly.

PVC heat shrink tubing provides basic moisture resistance and is generally suitable for indoor and sheltered outdoor use — for example, wrapping battery packs stored in a garage or under a seat. For prolonged UV exposure, submersion, or fully waterproof cable wrap applications, a dual-wall adhesive-lined heat shrink tubing is generally a better choice.

Yes. PVC heat shrink tubing is commonly used to wrap and insulate lithium-ion, NiMH, and lead-acid battery packs in e-bike, power tool, and RC applications. It provides electrical insulation and a clean finished appearance. Ensure the battery pack's surface temperature during normal operation stays within the tubing's rated range.

Measure the length of the object you need to cover, then add at least 10–20% extra to account for longitudinal shrinkage (PVC tubing typically shrinks 5–15% in length when heat is applied). For example, a 300mm (≈11.8") battery pack would generally need at least 330–360mm of tubing. For ongoing projects, ordering a longer roll (5 m or 10 m) is typically more economical than multiple short lengths.

This tubing is available in Black, White, Blue, Red, Transparent, Fruit Green, and Silver Grey. Color is purely cosmetic and does not affect electrical or thermal performance. Transparent is popular for battery pack rewraps where you want cell labels, polarity markings, or capacity ratings to remain visible after shrinking.

Yes. The tubing ships as a continuous length and can be trimmed with scissors or a utility knife before or after shrinking. Cut ends cleanly and squarely to prevent fraying and to ensure even heat distribution during shrinking.