PVC Heat Shrink Tubing for RC Battery Packs — Secure, Color-Coded Insulation from 30mm to 50mm
Rebuilding or rewrapping an RC battery pack is one of those jobs where the wrong wrap causes real problems — loose cells, exposed terminals, and shorts that kill a pack mid-run. Whether you're a hobbyist refreshing a LiPO flight pack or a technician rebuilding NiMH packs for RC cars, you need a wrap that fits snugly, shrinks evenly, and stays put under vibration and heat.
Each listing covers flat-width sizes of 31mm (Φ20mm inner diameter), 36mm (Φ22mm), 40mm (Φ25mm), 43mm (Φ27mm), 45mm (Φ28mm), and 50mm (Φ32mm) — available in lengths of 1M (≈3.3 ft), 2M (≈6.6 ft), 5M (≈16.4 ft), 10M (≈32.8 ft), and 50M (≈164 ft) for bulk shop use. The tubing is made from flexible PVC with a typically 2:1 shrink ratio and is offered in up to 13 colors per size, including Black, White, Red, Blue, Yellow, Green, Transparent, Silver Gray, Purple, Orange, Pink, Fruit Green, and Light Green.
Typical use cases include rewrapping LiPO battery packs for FPV drones and RC aircraft, rebuilding NiMH or NiCd stick packs for RC cars and trucks, bundling and color-coding wiring harnesses in RC boats, and general large-diameter wire insulation in electronics repair shops. The transparent variant is particularly useful for battery packs where you need to read cell labels or capacity markings through the wrap.
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Compatible with: LiPO · LiHV · NiMH · NiCd RC battery packs — fits standard rectangular and cylindrical cell configurations used in RC cars, RC aircraft, FPV drones, and RC boats.
✅ Key Features of This PVC Heat Shrink Tubing for RC Battery Packs
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Six Flat-Width Sizes — 31mm through 50mm covers the most common RC battery pack profiles, from slim 2S stick packs to wide 6S saddle packs, without needing to cut or fold excess material.
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Up to 13 Color Options — Color-code packs by cell count, voltage, or owner in a shared shop. Transparent lets you read cell labels and capacity markings without removing the wrap.
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Even Heat Shrink Performance — PVC material shrinks uniformly around irregular pack shapes when a heat gun is applied, conforming to corners and connector exits without cracking or splitting.
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Electrical Insulation Layer — Provides a protective insulating barrier over exposed cell joints, balance lead exits, and solder points — reducing the risk of shorts from vibration or contact during use.
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Flexible Length Options — Single-meter lengths for one-off repairs, up to 50M bulk rolls for RC repair shops and battery builders who need consistent stock on hand.
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Moisture-Resistant Outer Shell — PVC construction resists light moisture exposure from outdoor tracks and damp storage, helping protect cell wraps and terminal connections between runs.
📐 Technical Specifications — PVC Heat Shrink Tubing for RC Battery Packs
| Material |
PVC (Polyvinyl Chloride) |
| Available Flat Widths |
31mm · 36mm · 40mm · 43mm · 45mm · 50mm |
| Corresponding Inner Diameters (before shrink) |
Φ20mm · Φ22mm · Φ25mm · Φ27mm · Φ28mm · Φ32mm |
| Available Lengths |
1M (≈3.3 ft) · 2M (≈6.6 ft) · 5M (≈16.4 ft) · 10M (≈32.8 ft) · 50M (≈164 ft) |
| Shrink Ratio |
Typically 2:1 |
| Activation Temperature |
Typically 70–90°C (158–194°F) |
| Colors Available |
Black, White, Red, Blue, Yellow, Green, Transparent, Silver Gray, Purple, Orange Red, Orange Yellow, Pink, Fruit Green, Light Green (availability varies by size — see variant options) |
| Compatible Battery Types |
LiPO, LiHV, NiMH, NiCd |
| Recommended Application Tool |
Heat gun (low–medium setting) |
| Wall Thickness (before shrink) |
See variant options |
| Voltage Rating |
Contact us to confirm |
| UL / RoHS Compliance |
Contact us to confirm |
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Sizing tip: Measure your battery pack's circumference, divide by 3.14 to get the diameter, then choose the next size up in flat width. When in doubt, size up — the tubing will shrink down to conform.
❓ Frequently Asked Questions
How do I choose the right flat width for my battery pack?
Measure the circumference of your battery pack with a flexible tape measure, then divide by π (3.14) to get the approximate diameter. The flat width of the tubing should be roughly half the circumference. For example, a pack with an 80mm circumference needs a flat width of about 40mm. Always round up to the next available size — the tubing will shrink down to grip the pack firmly. For saddle packs or irregular shapes, measure the widest cross-section.
What do the flat-width and inner-diameter (Φ) numbers mean?
The flat width (e.g., 31mm) is how wide the tubing measures when pressed completely flat — this is the number most useful for matching to your pack's circumference. The inner diameter (e.g., Φ20mm) is the open-tube measurement before any heat is applied. Both are pre-shrink measurements. After shrinking, the tubing will conform tightly to whatever it's wrapped around, typically reducing to about half the original inner diameter.
Which battery chemistries and pack types is this compatible with?
This tubing is compatible with LiPO, LiHV, NiMH, and NiCd battery packs in standard RC configurations — including stick packs, saddle packs, and rectangular hard-case packs used in RC cars, RC trucks, RC aircraft, FPV drones, and RC boats. It functions as an outer insulating wrap and does not interact with the battery chemistry.
What temperature does this tubing require to shrink, and what tools work best?
PVC heat shrink tubing in this size range generally activates at around 70–90°C (158–194°F). A heat gun on a low or medium setting is the most reliable tool — move it steadily along the tubing to avoid hot spots. A hair dryer can work in a pinch but will be slower and may not shrink the tubing as evenly. Avoid open flames; they can scorch or melt PVC and create uneven shrinkage.
Is this tubing suitable for outdoor RC use or humid environments?
PVC heat shrink tubing generally provides adequate moisture resistance for typical outdoor RC use — outdoor dirt tracks, damp garages, and light rain exposure. It is not rated for continuous submersion. For marine RC applications (RC boats, underwater ROVs), consider sealing the open ends with waterproof adhesive or using adhesive-lined heat shrink tubing instead. The tubing itself will not degrade from normal outdoor humidity.
How strong is the wrap — will it hold up to vibration and impacts during RC use?
Once properly shrunk, PVC tubing conforms tightly to the pack surface and generally holds its position through normal RC vibration and moderate impacts. It is not a structural component — it does not replace proper cell bonding or pack assembly — but it does keep the outer wrap from shifting or peeling during use. For high-impact applications like bashing RC trucks, inspect the wrap after hard crashes and re-wrap if any splitting or lifting is observed.
Can I use this for applications other than RC battery packs?
Yes. The 30–50mm size range is well suited for large-diameter cable bundling, wire harness insulation, tool handle grip wrapping, and general electrical insulation in electronics repair. The transparent option is especially useful when you need to display labels, barcodes, or markings underneath the wrap. Bulk 50M rolls are popular with repair shops that need consistent stock for multiple projects.
How do I cut the tubing cleanly from a bulk roll?
Use sharp scissors or a utility knife on a flat cutting surface. PVC cuts cleanly when the blade is sharp — a dull blade tends to compress and fray the edge. For 10M and 50M rolls, a rotary cutter and self-healing cutting mat will give the most consistent results. Always cut slightly longer than your pack requires; you can trim the excess after shrinking, but you cannot add length back.
🛒 Select your size, color, and length above, then add to cart — ships from our US warehouse.
