PVC Heat Shrink Tubing for RC Battery Packs — 200mm–500mm, LiPo NiMH NiCd, Multiple Colors

Measure the circumference of your assembled battery pack with a flexible tape measure, then divide by π (3.14) to get the pack's outer diameter. Choose a tubing flat width that is approximately 10–15% larger than the pack's radius. For example, a pack with a 190mm circumference has a diameter of roughly 60mm — a 200mm (Φ127mm) tube will shrink down to fit snugly. When in doubt, size up rather than down, as tubing that is too small cannot be forced over the pack.

This PVC heat shrink tubing for battery packs typically has a 2:1 shrink ratio, meaning it shrinks to approximately half its original flat width when heat is applied evenly. The flat widths in this listing range from Φ127mm (200mm flat) to Φ318mm (500mm flat). In practice, the final shrunk diameter will be slightly larger than half the flat width due to material stiffness, so always verify fit on a test piece before committing to a full roll.

PVC heat shrink tubing generally activates at 70°C–90°C (158°F–194°F). A heat gun set to low or medium is the recommended tool — keep it moving in slow, even passes around the pack to avoid bubbling or uneven shrinkage. Avoid open flames (lighters, torches), as concentrated heat can scorch the PVC or damage the cells underneath. A 1500W heat gun with a concentrator nozzle works well for larger flat widths (350mm and above).

Yes. This PVC heat shrink wrap is designed for use with LiPo, NiMH, and NiCd RC battery packs, as well as general LiIon cylindrical cell assemblies. The PVC material is electrically insulating and chemically compatible with all common RC battery chemistries. Always confirm the flat width matches your specific pack dimensions before ordering — the variant title lists both the flat width (mm) and the expanded inner diameter (Φ mm) to help you select correctly.

PVC heat shrink tubing is generally moisture-resistant and provides a degree of protection against splashes and light humidity. It is not rated for full submersion. For RC vehicles used in wet, muddy, or rain conditions, this wrap helps protect the battery pack's outer surface and reduces the risk of shorts from surface moisture. For extreme wet conditions, additional waterproofing (such as conformal coating on connectors) is recommended alongside the heat shrink wrap.

For a single battery pack, you typically need a piece that is 20–30mm (about 1") longer than the pack on each end to allow for overlap and a clean shrink edge. As a general rule, a 1M roll covers 3–6 standard RC car stick packs depending on pack length. The 2M roll is a good choice for small batch rebuilds (6–12 packs), while the 5M roll offers the best per-pack value for workshop use or club-level battery maintenance.

Available colors include Black, Blue, Transparent, Silver Gray, Fruit Green, and White — though color availability varies by flat width (see variant options for your chosen size). Color is purely cosmetic and has no effect on electrical insulation, shrink ratio, or durability. Transparent tubing is a popular choice for battery technicians who want to keep cell brand markings, capacity labels, or date codes visible after wrapping.

Select size and color combinations — specifically 220mm (Φ140mm Thickened) and 258mm (Φ164mm Thickened) — are available in a heavier wall thickness. Thickened-wall tubing offers greater puncture and abrasion resistance, making it a better choice for packs used in bashing RC trucks, rock crawlers, or other high-vibration, high-impact applications. Standard wall thickness is sufficient for most indoor RC, airplane, and light-duty applications.