/eh/2025-01-08/173633966714069467/picture.png)
/eh/2024-12-24/173503345348979036/Favorite-Icon.png){kind=icon}
/eh/2025-07-08/1751962110204480194/picture.png)
/eh/2025-06-21/1750485478958537574/countryInfoIcon.png)
/eh/2025-06-21/1750485741321434291/Hi-Sign-in-My-Nihao.png)
/eh/2025-06-21/1750485837193896318/cart.png)
/eh/2025-06-21/1750485968202533847/cart.png)
/eh/2025-04-17/1744862476612819675/hot-img.png)
/eh/2025-11-07/1762504524550532584/header-icon.jpg){kind=icon}
/eh/2025-07-07/1751875582852206790/header-icon.png){kind=icon}
/eh/2025-07-07/1751875587886277738/header-icon.png){kind=icon}
Best in 7 days
home
>
400mm Large Diameter Heat Shrink Tubing for Battery Packs & Cable Insulation
>
400mm Large Diameter Heat Shrink Tubing for Battery Packs & Cable Insulation
download picture
description
400mm Large Diameter Heat Shrink Tubing for Battery Packs & Cable Insulation400mm Large Diameter Heat Shrink Tubing Reliable Insulation for Battery Packs & Large Cable Assemblies When you're building or repairing large battery packs, cable harnesses, or industrial wiring assemblies, finding heat shrink tubing wide enough to do the job cleanly is a real challenge. Standard tubing falls short literally. This 400mm large diameter heat shrink tubing is designed for makers, EV hobbyists, electricians, and DIYers who need a
Shopping security
product description
Why choose thelockerguy wholesale?
400mm Large Diameter Heat Shrink Tubing — Reliable Insulation for Battery Packs & Large Cable Assemblies
When you're building or repairing large battery packs, cable harnesses, or industrial wiring assemblies, finding heat shrink tubing wide enough to do the job cleanly is a real challenge. Standard tubing falls short — literally. This 400mm large diameter heat shrink tubing is designed for makers, EV hobbyists, electricians, and DIYers who need a professional-grade sleeve that actually fits oversized components without improvising.
Each piece is supplied as a flat-width tube measuring 400mm (≈15.7") across when laid flat, available in lengths of 1 Meter (≈39.4"), 2 Meter (≈78.7"), and 3 Meter (≈118.1"). Made from polyolefin material, it offers consistent wall thickness, clean shrinkage, and reliable electrical insulation. Choose from Black, Blue, Transparent, or Fruit Green to suit your build or color-coding system.
Typical applications include wrapping 18650 lithium-ion battery pack assemblies, insulating large-gauge cable splices and bus bars, protecting copper tubing or conduit ends, and finishing custom power tool battery rebuilds — all scenarios where standard heat shrink tubing for battery wraps simply isn't wide enough.
Compatibility Note: This tubing is designed for components with a circumference of up to approximately 400mm flat-width. Verify your battery pack or cable bundle diameter before ordering. Shrink ratio is typically 2:1 — contact us to confirm for your application.
✅ Key Features of These 400mm Large Diameter Heat Shrink Tubes
- Battery Pack Ready — 400mm flat-width diameter is sized specifically for large-format lithium-ion battery pack wraps, 18650 cell groups, and custom power bank builds.
- Consistent Heat Activation — Polyolefin construction shrinks evenly with a heat gun, typically activating around 90°C (194°F), reducing the risk of scorching or uneven coverage on large surfaces.
- 4 Color Options for Circuit Identification — Black, Blue, Transparent, and Fruit Green allow color-coded organization across multi-bank battery systems or complex cable harness assemblies.
- Cut-to-Length Flexibility — Supplied in 1M, 2M, and 3M lengths, the tubing cuts cleanly with scissors or a utility knife before application, minimizing waste on varied project sizes.
- Electrical Insulation & Moisture Resistance — Once fully shrunk, the sleeve provides a snug insulating barrier suitable for protecting cable splices, bus bars, and terminal connections from incidental moisture and abrasion.
- Transparent Option for Visual Inspection — The clear variant lets you inspect solder joints, cell labels, or wire routing underneath the sleeve without removing it — useful for maintenance-friendly battery pack builds.
📐 Technical Specifications — 400mm Large Diameter Heat Shrink Tubing
| Product Type | Large Diameter Heat Shrink Tubing |
|---|---|
| Flat Width (Supplied) | 400mm (≈15.7") |
| Shrink Ratio | Typically 2:1 — contact us to confirm |
| Approximate Shrunk Diameter | See variant options / contact us to confirm |
| Available Lengths | 1 Meter (≈39.4"), 2 Meter (≈78.7"), 3 Meter (≈118.1") |
| Available Colors | Black, Blue, Transparent, Fruit Green |
| Material | Polyolefin |
| Activation Temperature | Typically ~90°C (194°F) |
| Full Shrink Temperature | Typically 120–150°C (248–302°F) |
| Wall Thickness (Shrunk) | See variant options / contact us to confirm |
| Application Tool | Heat gun (recommended); avoid open flame |
| Typical Use | Battery pack wraps, cable insulation, bus bar protection, DIY electrical repairs |
Heads Up: Wall thickness and exact shrunk diameter vary by production batch. If your project has tight clearance tolerances, please contact us before ordering to confirm current specifications.
❓ Frequently Asked Questions
What length of heat shrink tubing do I need?
Measure the component or cable run you need to cover, then add at least 10–15% extra to account for shrinkage along the length axis. For battery packs, generally choose a length that extends 20–30mm beyond each terminal end. Available in 1 Meter (≈39.4"), 2 Meter (≈78.7"), and 3 Meter (≈118.1") options.
What is the shrink ratio of this tubing?
Large-diameter polyolefin heat shrink tubing of this type typically has a 2:1 shrink ratio, meaning it will shrink to approximately half its supplied diameter when heat is applied. The 400mm supplied flat-width will generally shrink down to around 200mm. Contact us to confirm the exact ratio for your specific order.
Can this tubing be used outdoors or in wet environments?
Standard polyolefin heat shrink tubing provides good moisture resistance once fully shrunk and sealed. For prolonged outdoor or submersion use, an adhesive-lined (dual-wall) variant is generally recommended. This product is suitable for indoor electrical insulation and short-term moisture protection in most DIY applications.
What temperature is needed to shrink this tubing?
Polyolefin heat shrink tubing of this type typically activates at around 90°C (194°F) and fully shrinks at approximately 120–150°C (248–302°F). A heat gun is the recommended tool. Avoid open flames, which can cause uneven shrinkage or scorching on large-diameter sleeves.
Is this tubing compatible with lithium-ion battery packs?
Yes. The 400mm flat-width diameter makes this tubing well-suited for wrapping large-format lithium-ion battery packs, 18650 cell groups, and similar assemblies. It provides electrical insulation and a clean, finished appearance. Always ensure the battery pack is fully assembled and cool before applying heat.
How do I choose the right color?
Color choice is generally functional or organizational. Black is the most common for electrical insulation and UV resistance. Transparent allows visual inspection of the component underneath without removing the sleeve. Blue and Fruit Green are useful for color-coding different circuits, voltage levels, or battery banks in multi-pack builds.
Can I cut this tubing to a shorter length before shrinking?
Yes. The tubing can be cut to any length with scissors or a utility knife before application. Cut cleanly and squarely to ensure even shrinkage at the ends. It is generally easier to cut before shrinking rather than after.
🛒 Select your color and length above, then add to cart — ships from our US warehouse.
400mm Large Diameter Heat Shrink Tubing for Battery Packs & Cable Insulation
Item no
:
58321251652
US$ 33.96
Pay in 4 interest-free payments of $8.49 Learn more
Min. order:
1piece
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jun 30 - Jul 5
US$40
Get nowSign up to your membership to get coupons up to
15%
Get nowOpportunity to enjoy order discount up to 15% off
Please add the products
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
Discover Niche Categories That Outsell
Top-Converting Item to Boost Your Average Order
Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
recommand products
