{"product_id":"20mm-pvc-heat-shrink-tubing-battery-pack-sleeve","title":"20mm PVC Heat Shrink Tubing for Battery Packs — Transparent, Black \u0026 Blue","description":"\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right length for my project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the total length of wire, cable, or battery cells you need to cover, then add 10–15% extra for trimming and overlap. For single battery packs, 1 Meter is typically sufficient. For larger wiring harnesses or bulk projects, 10–50 Meter rolls offer better value per meter.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What shrink ratio does this tubing have?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"PVC heat shrink tubing generally has a 2:1 shrink ratio, meaning the 20mm flat-width tube will shrink down to approximately 10mm in diameter when heat is applied. This makes it suitable for covering objects with a finished diameter of roughly 6–10mm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this tubing be used outdoors or in wet environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"PVC heat shrink tubing provides basic moisture resistance and is suitable for light indoor and sheltered outdoor use. For fully waterproof or UV-exposed applications, we recommend using adhesive-lined polyolefin tubing instead. If you are unsure, contact us to confirm the best option for your environment.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What heat source should I use to shrink this tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A heat gun is the most reliable tool and is strongly recommended. PVC tubing typically shrinks at temperatures around 90–120°C (194–248°F). A lighter or match can work in a pinch but may cause uneven shrinkage or scorching. Never use an open flame directly on the tubing for extended periods.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this tubing compatible with lithium-ion battery packs?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. 20mm flat-width PVC heat shrink tubing is widely used for wrapping 18650 and similar cylindrical lithium-ion cells, as well as small battery pack assemblies. It provides insulation and a clean finished appearance. Always ensure the battery surface is dry and clean before applying.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which color should I choose — Transparent, Black, or Blue?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Transparent is ideal when you want to display labels, markings, or the underlying component. Black is the most common choice for a clean, professional finish and is widely used in electronics and automotive wiring. Blue is useful for color-coding wires or circuits in multi-circuit assemblies.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I cut this tubing to custom lengths?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Absolutely. PVC heat shrink tubing cuts cleanly with scissors or a utility knife. Simply cut to your desired length before applying heat. The tubing will not fray or unravel after cutting.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003ch2\u003e20mm PVC Heat Shrink Tubing — Clean, Reliable Insulation for Battery Packs and Wire Bundles\u003c\/h2\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003cp\u003eIf you have ever finished a battery pack or wiring project only to end up with exposed connections, loose cells, or an unprofessional-looking assembly, you know how much the right sleeve material matters. Whether you are a hobbyist building custom 18650 battery packs, an electronics technician bundling wiring harnesses, or a maker wrapping DIY power tools, having a reliable heat shrink tubing on hand makes the difference between a job that looks finished and one that looks rushed.\u003c\/p\u003e\n\n    \u003cp\u003eThis listing includes PVC heat shrink tubing with a 20mm flat width (approximately 12–13mm recovered diameter after shrinking). Available in Transparent, Black, and Blue, and sold in roll lengths of 1 Meter (≈3.3 ft), 5 Meter (≈16.4 ft), 10 Meter (≈32.8 ft), 20 Meter (≈65.6 ft), 30 Meter (≈98.4 ft), and 50 Meter (≈164 ft). The tubing is made from flexible PVC material with a generally 2:1 shrink ratio, suitable for covering cylindrical objects in the 6–10mm finished diameter range.\u003c\/p\u003e\n\n    \u003cp\u003eTypical use cases include wrapping individual 18650 lithium-ion cells and small battery pack assemblies, insulating and bundling wire harnesses in automotive and marine wiring projects, and protecting cable joints and splices in electronics repair and DIY builds. The 20mm flat-width size is one of the most searched sizes for battery pack heat shrink tubing and single-cell wrapping applications.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e🔌\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits cylindrical objects with a pre-shrink diameter of up to approximately 12–13mm. Suitable for 18650 cells, small battery packs, wire bundles, and cable splices. Shrinks with a standard heat gun at typically 90–120°C (194–248°F).\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-note\"\u003e\n    \u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e\n    \u003cstrong\u003eNote:\u003c\/strong\u003e If you are unsure whether 20mm flat width is the correct size for your application, please measure your component's outer diameter before ordering, or contact us to confirm. Recovered diameter and shrink temperature may vary slightly by batch.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These 20mm PVC Heat Shrink Tubes\u003c\/h2\u003e\n\n  \u003cul class=\"hdiy-features\"\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔋\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eBattery Pack Ready\u003c\/strong\u003e — The 20mm flat width is sized specifically for wrapping 18650 lithium-ion cells and small DIY battery pack assemblies, giving a snug, insulated finish without bulk.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎨\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eThree Color Options\u003c\/strong\u003e — Choose Transparent to keep labels and markings visible, Black for a clean professional look, or Blue for easy color-coding in multi-circuit wiring systems.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e✂️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eEasy to Cut and Apply\u003c\/strong\u003e — Cuts cleanly with scissors or a utility knife and shrinks evenly with a standard heat gun, making it practical for both bench work and field repairs.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Roll Lengths\u003c\/strong\u003e — Available from 1 Meter up to 50 Meter rolls so you can buy exactly what your project needs — from a single battery wrap to a bulk supply for production runs.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eElectrical Insulation\u003c\/strong\u003e — PVC material provides solid dielectric insulation for low-voltage wiring and battery cell wrapping, helping prevent short circuits and accidental contact between conductors.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eVersatile Fit for DIY Projects\u003c\/strong\u003e — Works well for wire bundling, cable sleeve repair, connector insulation, and general-purpose heat shrink tubing applications across electronics, automotive, and hobby builds.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — PVC Heat Shrink Tubing\u003c\/h2\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC (Polyvinyl Chloride)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFlat Width\u003c\/th\u003e\n\u003ctd\u003e20mm (≈0.79\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRecovered Diameter (approx.)\u003c\/th\u003e\n\u003ctd\u003eTypically 12–13mm (≈0.47–0.51\") after full shrink\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eShrink Ratio\u003c\/th\u003e\n\u003ctd\u003eGenerally 2:1\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eShrink Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically 90–120°C (194–248°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eColors Available\u003c\/th\u003e\n\u003ctd\u003eTransparent, Black, Blue\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAvailable Lengths\u003c\/th\u003e\n\u003ctd\u003e1 m (≈3.3 ft), 5 m (≈16.4 ft), 10 m (≈32.8 ft), 20 m (≈65.6 ft), 30 m (≈98.4 ft), 50 m (≈164 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWall Thickness (pre-shrink)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eVoltage Rating\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRecommended Heat Source\u003c\/th\u003e\n\u003ctd\u003eHeat gun\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSuitable For\u003c\/th\u003e\n\u003ctd\u003eBattery cells, wire bundles, cable splices, connector insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdiv class=\"hdiy-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right length for my project?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMeasure the total length of wire, cable, or battery cells you need to cover, then add 10–15% extra for trimming and overlap. For a single battery pack, 1 Meter is typically sufficient. For larger wiring harnesses or bulk projects, 10–50 Meter rolls offer better value per meter. As a reference: 1 Meter ≈ 3.3 ft, 10 Meter ≈ 32.8 ft, 50 Meter ≈ 164 ft.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat shrink ratio does this tubing have, and what finished diameter should I expect?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThis PVC heat shrink tubing generally has a 2:1 shrink ratio. Starting at 20mm flat width, it will typically recover to approximately 12–13mm in diameter after full heat application. This makes it well suited for objects with an outer diameter of roughly 6–10mm, including standard 18650 lithium-ion cells.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan this tubing be used outdoors or in wet environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003ePVC heat shrink tubing provides basic moisture resistance and is suitable for light indoor and sheltered outdoor use. For fully waterproof or UV-exposed applications, adhesive-lined polyolefin tubing is generally a better choice. If you are unsure, contact us to confirm the best option for your specific environment.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat heat source should I use to shrink this tubing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eA heat gun is the most reliable tool and is strongly recommended. PVC tubing typically shrinks at around 90–120°C (194–248°F). A lighter can work in a pinch but may cause uneven shrinkage or scorching. Avoid holding an open flame directly on the tubing for extended periods to prevent damage.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this tubing compatible with lithium-ion battery packs and 18650 cells?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. 20mm flat-width PVC heat shrink tubing is widely used for wrapping 18650 and similar cylindrical lithium-ion cells, as well as small battery pack assemblies. It provides insulation and a clean finished appearance. Always ensure the battery surface is dry and clean before applying heat.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhich color should I choose — Transparent, Black, or Blue?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eTransparent is ideal when you want to keep labels, markings, or the underlying component visible. Black is the most common choice for a clean, professional finish and is widely used in electronics and automotive wiring. Blue is useful for color-coding wires or circuits in multi-circuit assemblies, making it easy to identify specific runs at a glance.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I cut this tubing to custom lengths before applying heat?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eAbsolutely. PVC heat shrink tubing cuts cleanly with scissors or a utility knife. Simply cut to your desired length before applying heat. The tubing will not fray or unravel after cutting, making it easy to prepare multiple pieces in advance for batch work.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your color and length above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"Transparent \/ 1 Meter","offer_id":52330957799698,"sku":"GLFBFHHGZYYSG0492x1","price":6.24,"currency_code":"USD","in_stock":true},{"title":"Black \/ 1 Meter","offer_id":52330957832466,"sku":"GLFBFHHGZYYSG0493x1","price":6.24,"currency_code":"USD","in_stock":true},{"title":"Blue \/ 1 Meter","offer_id":52330957865234,"sku":"GLFBFHHGZYYSG0494x1","price":6.24,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ 5 Meter","offer_id":52330957898002,"sku":"GLFBFHHGZYYSG0492x5","price":8.05,"currency_code":"USD","in_stock":true},{"title":"Black \/ 5 Meter","offer_id":52330957930770,"sku":"GLFBFHHGZYYSG0493x5","price":8.05,"currency_code":"USD","in_stock":true},{"title":"Blue \/ 5 Meter","offer_id":52330957963538,"sku":"GLFBFHHGZYYSG0494x5","price":8.05,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ 10 Meter","offer_id":52330957996306,"sku":"GLFBFHHGZYYSG0492x10","price":11.55,"currency_code":"USD","in_stock":true},{"title":"Black \/ 10 Meter","offer_id":52330958029074,"sku":"GLFBFHHGZYYSG0493x10","price":11.55,"currency_code":"USD","in_stock":true},{"title":"Blue \/ 10 Meter","offer_id":52330958061842,"sku":"GLFBFHHGZYYSG0494x10","price":11.55,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ 20 Meter","offer_id":52330958094610,"sku":"GLFBFHHGZYYSG0492x20","price":20.98,"currency_code":"USD","in_stock":true},{"title":"Black \/ 20 Meter","offer_id":52330958127378,"sku":"GLFBFHHGZYYSG0493x20","price":20.98,"currency_code":"USD","in_stock":true},{"title":"Blue \/ 20 Meter","offer_id":52330958160146,"sku":"GLFBFHHGZYYSG0494x20","price":20.98,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ 30 Meter","offer_id":52330958192914,"sku":"GLFBFHHGZYYSG0492x30","price":30.42,"currency_code":"USD","in_stock":true},{"title":"Black \/ 30 Meter","offer_id":52330958225682,"sku":"GLFBFHHGZYYSG0493x30","price":30.42,"currency_code":"USD","in_stock":true},{"title":"Blue \/ 30 Meter","offer_id":52330958258450,"sku":"GLFBFHHGZYYSG0494x30","price":30.42,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ 50 Meter","offer_id":52330958291218,"sku":"GLFBFHHGZYYSG0492x50","price":49.3,"currency_code":"USD","in_stock":true},{"title":"Black \/ 50 Meter","offer_id":52330958323986,"sku":"GLFBFHHGZYYSG0493x50","price":49.3,"currency_code":"USD","in_stock":true},{"title":"Blue \/ 50 Meter","offer_id":52330958356754,"sku":"GLFBFHHGZYYSG0494x50","price":49.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-04_0bc61768-b7fa-4c82-bd8d-1daa8e187d4d.jpg?v=1781001907","url":"https:\/\/homediyer.com\/products\/20mm-pvc-heat-shrink-tubing-battery-pack-sleeve","provider":"HomeDIYer","version":"1.0","type":"link"}