Large Diameter PVC Heat Shrink Tubing — Width 295–450mm, Battery Wrap Sleeve

Measure the circumference of your battery pack, then divide by π (≈3.14) to get the diameter. The flat width should be roughly equal to half the circumference — or about 10–20% larger than the pack's radius to allow easy sliding before shrinking. For example, a pack with a 180mm diameter (≈565mm circumference) generally fits well inside a 295mm flat-width tube. Always cross-check against the recovered inner diameter listed in the variant options — that's the diameter after shrinking. When in doubt, size up.

This PVC heat shrink tubing typically has a 2:1 shrink ratio, meaning it recovers to approximately half its expanded flat width. The recovered inner diameters for each size are listed in the variant options (Φ188mm–Φ286mm). Always verify the recovered diameter matches your battery pack's actual diameter before ordering — do not rely on flat width alone for fit.

PVC heat shrink tubing generally activates between 70°C and 105°C (158°F–221°F). For large-diameter tubing, a heat gun with sufficient airflow is strongly recommended — move it steadily around the full circumference to shrink evenly and avoid hot spots. Small hobby heat guns may struggle with very large diameters. Avoid open flames, which can scorch or melt the PVC unevenly.

Yes. The large flat widths (295mm–450mm) in this listing are specifically suited for wrapping large-format battery packs such as e-bike battery modules, power tool battery rebuilds, and large RC or UPS battery assemblies. PVC provides electrical insulation and physical protection for these applications. Note that PVC is not rated for sustained high-temperature environments — ensure packs are not exposed to prolonged heat after wrapping.

Once properly shrunk, PVC heat shrink tubing generally offers basic moisture resistance suitable for typical outdoor use — such as e-bike battery packs exposed to light rain or humidity. It is not rated for prolonged submersion or pressure washing. For applications requiring a waterproof seal, adhesive-lined heat shrink tubing is generally a better choice.

This tubing is available in 1 Meter (≈39.4"), 2 Meter (≈78.7"), and 3 Meter (≈118.1") lengths. Choose based on the number of battery packs you need to wrap — 1M is typically enough for one large pack, while 2M or 3M lengths offer better value for batch rebuilds or longer assemblies. Each order is one continuous piece in your selected length.

Flat width is the measurement of the tubing when laid flat before shrinking — it's how the product is sized and sold. Recovered (inner) diameter is the approximate inside diameter after full heat shrinkage. For example, the 295mm flat-width size has a recovered inner diameter of approximately Φ188mm. Always use the recovered diameter to match against your battery pack's actual diameter — not the flat width.