258mm Flat Width PVC Heat Shrink Tubing for Battery Pack Wrap & Sleeve Insulation

Measure the total length of your battery pack or cell group, then add at least 20–30mm (≈1") of overlap on each end. For example, a 200mm (≈7.9") battery pack would typically need a 250–260mm (≈10") cut length. Choose from our 1m, 2m, 3m, 4m, or 5m rolls based on how many packs you need to wrap — a 1m roll generally yields multiple sleeves for standard-sized packs.

PVC heat shrink tubing generally has a shrink ratio of approximately 2:1, meaning it will shrink to roughly half its expanded diameter when heat is applied evenly. The 258mm flat width corresponds to a circumference of approximately 516mm before shrinking. In most cases, this is sufficient to cover large multi-cell battery packs — confirm your pack's outer circumference before ordering.

PVC heat shrink tubing is generally moisture-resistant and performs well in sheltered outdoor and high-humidity environments such as garages, workshops, and enclosed battery enclosures. For prolonged direct UV exposure or extreme outdoor conditions, a polyolefin-based tubing is typically recommended. This product is well-suited for most indoor and semi-outdoor battery applications.

PVC heat shrink tubing of this type typically supports up to 600V insulation rating and an operating temperature range of approximately -20°C to 105°C (-4°F to 221°F). These are general values for standard PVC tubing — verify your specific application requirements, especially for high-discharge lithium battery systems or industrial use. Contact us to confirm specifications for your project.

A 258mm flat width corresponds to a circumference of approximately 516mm, making it suitable for battery packs with an outer diameter of roughly 160mm (≈6.3") before shrinking. This is commonly used for large 18650, 21700, or prismatic cell packs assembled in multi-cell configurations — such as e-bike battery modules, power wall cells, and custom lithium packs. Contact us to confirm fit for your specific pack geometry.

Slide the tubing over the battery pack before final assembly if possible. Apply even heat using a heat gun set to approximately 90–120°C (194–248°F), moving in a consistent sweeping motion from the center outward to avoid air pockets or uneven shrinkage. Avoid open flames, which can cause scorching or uneven results. Allow the tubing to cool fully before handling the finished pack.

Yes, PVC heat shrink tubing is widely used in lithium-ion battery pack assembly for insulation, labeling, and cell group protection. It is electrically non-conductive and provides a clean, professional finish. Always ensure the tubing is fully shrunk and free of gaps before use in any electrical application, and confirm that the operating temperature range is appropriate for your battery chemistry.