Large Diameter PVC Heat Shrink Tubing — Clean, Durable Battery Pack Wrapping from 110mm to 155mm
If you've ever finished building a battery pack only to leave it looking like a tangle of exposed cells and tape, you know the frustration. DIY builders, e-bike enthusiasts, RC hobbyists, and electronics repair technicians all need a reliable way to wrap large-format battery packs with a finish that looks professional and holds up over time. This large diameter PVC heat shrink tubing is designed exactly for that job.
Each listing covers a single length of tubing — available in 1M (≈39.4"), 2M (≈78.7"), 3M (≈118.1"), or 5M (≈196.9") — in your choice of outer diameter from 110mm (≈4.3") to 155mm (≈6.1"), with recovered inner diameters ranging from Ø70mm (≈2.8") to Ø98mm (≈3.9"). Nine color options are available: Black, White, Blue, Blue (Thicken), Red, Green, Fruit Green, Silver Grey, and Clear.
Typical use cases include wrapping 18650 and 21700 lithium-ion battery packs for e-bikes and power tools, bundling and insulating large wire harnesses, protecting PVC pipe joints and conduit connections, and giving custom battery builds a clean, color-coded finish for easy identification.
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Compatibility Note: Outer diameter (OD) is the flat width before shrinking. Inner diameter (Ø) is the approximate recovered size. Always measure your battery pack or component diameter before selecting a size. If you are unsure, contact us to confirm.
✅ Key Features of These Large Diameter PVC Heat Shrink Tubes
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🔋Built for Large Battery Packs — Outer diameters from 110mm to 155mm cover most 18650, 21700, and custom lithium-ion battery pack sizes used in e-bikes, power walls, and RC builds.
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🎨9 Color Options for Easy Identification — Black, White, Blue, Blue (Thicken), Red, Green, Fruit Green, Silver Grey, and Clear let you color-code battery packs by voltage, capacity, or chemistry.
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📏Four Length Options — Choose 1M, 2M, 3M, or 5M to match your project scale, whether you're wrapping a single pack or stocking up for multiple builds.
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⚡Electrical Insulation — PVC material provides a reliable insulating layer over battery terminals and cell groups, reducing the risk of shorts during handling and storage.
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🔥Low Activation Temperature — Shrinks evenly with a standard heat gun at low-to-medium settings (typically 70–90°C / 158–194°F), without requiring specialized equipment.
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🛡️Thickened Wall Option Available — The Blue (Thicken) variant offers extra wall thickness for applications where additional mechanical protection or a firmer finish is needed after shrinking.
📐 Technical Specifications — Large Diameter PVC Heat Shrink Tubing
| Material |
PVC (Polyvinyl Chloride) |
| Shrink Ratio |
Typically 2:1 |
| Outer Diameter (OD) Range |
110mm (≈4.3") — 155mm (≈6.1") |
| Recovered Inner Diameter (Ø) Range |
Ø70mm (≈2.8") — Ø98mm (≈3.9") |
| Available Lengths |
1M (≈39.4"), 2M (≈78.7"), 3M (≈118.1"), 5M (≈196.9") |
| Available Colors |
Black, White, Blue, Blue (Thicken), Red, Green, Fruit Green, Silver Grey, Clear |
| Activation Temperature |
Typically 70–90°C (158–194°F) |
| Wall Thickness (standard) |
See variant options |
| Wall Thickness (Blue Thicken) |
Thicker than standard — contact us to confirm exact spec |
| Voltage Rating |
Contact us to confirm |
| Recommended Application Tool |
Heat gun (low to medium setting) |
| Typical Applications |
Battery pack wrapping, wire insulation, pipe joint protection, cable bundling |
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Size Selection Tip: The OD listed is the flat (unshrunk) width. Choose a size where the flat OD is comfortably larger than your pack's circumference divided by 2. When in doubt, size up — you can always apply more heat, but you cannot un-shrink the tube.
❓ Frequently Asked Questions
How do I choose the right diameter for my battery pack?
Measure the circumference of your battery pack and divide by π (≈3.14) to get the diameter. Choose a size where the flat width is typically 10–20% larger than the pack diameter so the tube slides on easily before shrinking. For example, a 70mm diameter pack generally works well with the 110mm OD (Ø70mm) option. If your pack is between sizes, size up.
What is the shrink ratio, and how much will it shrink?
PVC heat shrink tubing typically has a 2:1 shrink ratio, meaning it shrinks to approximately half its original diameter when heat is applied. The inner diameter listed (e.g., Ø70mm for the 110mm OD option) reflects the approximate recovered size after shrinking. Actual shrinkage may vary slightly depending on heat application technique.
What temperature and tool do I need to shrink this tubing?
PVC heat shrink tubing generally begins to shrink at around 70–90°C (158–194°F). A standard heat gun set to low or medium is recommended. Move the heat gun evenly along the tube to avoid hot spots. Avoid open flames, as they can scorch or melt the material unevenly and may damage the battery pack underneath.
Can this tubing be used outdoors or in wet environments?
PVC heat shrink tubing provides basic moisture resistance and is suitable for indoor and light outdoor use. For prolonged outdoor exposure, UV environments, or submersion, an adhesive-lined polyolefin tubing is generally a better choice. Contact us to confirm suitability for your specific application.
Is this compatible with 18650 and 21700 lithium-ion battery packs?
Yes. This large diameter PVC heat shrink tubing is widely used for wrapping 18650, 21700, and custom lithium-ion battery packs for e-bikes, power tools, and DIY power walls. It provides electrical insulation and a clean, professional finish. Always ensure the battery pack is fully assembled and cool before applying heat.
How do I convert the length options to feet or inches?
1M ≈ 3.3 ft (≈39.4 in), 2M ≈ 6.6 ft (≈78.7 in), 3M ≈ 9.8 ft (≈118.1 in), 5M ≈ 16.4 ft (≈196.9 in). Choose based on how many battery packs or wire runs you need to cover. For a single standard e-bike pack, 1M is typically sufficient.
What does the 'Blue (Thicken)' option mean, and when should I choose it?
The Blue (Thicken) variant uses a thicker wall PVC material compared to the standard Blue option, offering additional mechanical protection and a more rigid finish after shrinking. It is a good choice when extra durability is needed, such as for battery packs that will be handled frequently or installed in high-vibration environments.
Can I cut this tubing to a shorter length before shrinking?
Yes. PVC heat shrink tubing can be cut with standard scissors or a utility knife before shrinking. Cut it slightly longer than needed, slide it over your component, then apply heat. Trim any excess after shrinking if required. The tubing does not fray when cut.
🛒 Select your color, diameter, and length above, then add to cart — ships from our US warehouse.
