Measure the circumference of your battery pack, then divide by 2 to get the required flat width. For example, a pack with a 600mm circumference needs a 300mm flat width — the 320mm option would be the right choice (size up slightly for easy insertion). Our range covers 295mm (≈11.6") to 380mm (≈15"), suitable for most large-format battery assemblies.

PVC heat shrink tubing generally has a 2:1 shrink ratio, meaning it shrinks to approximately half its original flat width when heat is applied. This typically results in a snug, form-fitting wrap around the battery pack surface.

This PVC heat shrink sleeve provides basic moisture resistance and electrical insulation suitable for indoor and sheltered outdoor use. For prolonged outdoor exposure or submersion, a dual-wall adhesive-lined heat shrink is generally recommended for a fully waterproof seal.

Yes. This large-diameter PVC heat shrink wrap is commonly used on lithium-ion, LiFePO4, NiMH, and lead-acid battery assemblies. It is chemically inert and does not react with standard battery pack materials under normal operating conditions.

A standard heat gun set to a low-to-medium setting (typically 70–90°C / 158–194°F) works well. Move the heat gun evenly along the tube to avoid hot spots or wrinkling. Avoid open flames, which can cause uneven shrinkage or damage the PVC material.

Use sharp scissors or a utility knife to cut the tube before applying heat. Cut approximately 5–10mm longer than your battery pack on each end to allow for overlap after shrinkage. The tubing cuts cleanly and does not fray.

PVC heat shrink tubing in this size range is generally rated for low-voltage applications, typically up to 600V. If your application requires a specific certified voltage rating, please contact us to confirm before ordering.