PVC Heat Shrink Tubing 45mm–120mm | Battery Wrap & Wire Insulation – Multiple Colors

Measure the diameter of the object you want to cover, then multiply by approximately 1.57 to get the minimum flat width needed. For example, a 25mm diameter battery cell typically requires a flat width of at least 40mm — so the 45mm option would be the closest fit. This product covers flat widths from 45mm (≈1.77") to 120mm (≈4.72"), accommodating most common battery pack and wire bundle diameters. When in doubt, size up by one increment.

PVC heat shrink tubing typically has a 2:1 shrink ratio, meaning it shrinks to roughly half its original flat width when heat is applied. This is generally sufficient for snug coverage on cylindrical battery cells, wire harnesses, and similar objects. If you need a tighter grip or a higher shrink ratio, polyolefin tubing may be a better fit for your project.

PVC heat shrink tubing generally begins to shrink at around 70–90°C (158–194°F). A heat gun set to low or medium is the most common and recommended tool. Move the heat gun steadily along the tubing to avoid hot spots. A lighter can work for very short sections, but a heat gun gives the most even, controlled result — especially on wider widths like 80mm or 120mm.

PVC heat shrink tubing provides a degree of moisture resistance and is suitable for light indoor and outdoor use — for example, protecting wire splices in a garage or under a vehicle hood. It is not rated for continuous submersion or prolonged UV exposure. For demanding outdoor, waterproof, or marine applications, adhesive-lined polyolefin tubing is generally a better choice.

Yes. PVC heat shrink tubing is widely used for wrapping 18650, 21700, and other cylindrical lithium-ion cells, as well as assembled battery packs for e-bikes, power tools, and DIY energy storage. The flat widths available (45–120mm) cover most common cell and pack sizes. Always confirm the flat width matches your pack's outer diameter before ordering — use the formula: flat width needed ≈ pack diameter × 1.57.

The 1m (≈3.3 ft) roll is ideal for small repairs, wrapping a single battery cell, or one-off prototyping. The 5m (≈16.4 ft) roll offers better value per meter and is suited for workshop stock, batch production, or anyone who regularly wraps wire bundles or battery packs. Both lengths are cut from the same tubing stock and have identical material properties.

No — all 13 color variants share the same material properties and shrink characteristics. Color choice is purely for identification, organization, or aesthetics. Using different colors for different wire gauges, voltage levels, or battery types is a common practice in DIY electronics, automotive wiring, and solar installations. Transparent tubing is useful when you want to keep labels or markings visible after shrinking.