{"product_id":"5v-to-21v-boost-charging-cable-usb-dc-adapter-lithium-battery","title":"5V to 21V Boost Charging Cable – USB DC Lithium Battery Adapter","description":"\u003ch2\u003e5V to 21V Boost Charging Cable – USB DC Adapter for 21V Lithium Batteries\u003c\/h2\u003e\n\u003cp\u003eKeep your 21V lithium battery-powered tools and devices charged and ready with this reliable \u003cstrong\u003e5V to 21V Boost Charging Cable\u003c\/strong\u003e. Featuring a DC interface and USB input, this compact adapter cable steps up a standard 5V USB power source to the 21V output needed for compatible lithium battery packs — no bulky original charger required.\u003c\/p\u003e\n\n\u003cp\u003eWhether you need a quick replacement for a damaged charging cable or a handy spare for the workshop or job site, this durable boost cable delivers a dependable charge in a 50 cm or 100 cm length. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5V to 21V Boost Technology:\u003c\/strong\u003e Converts a standard USB 5V input to a 21V DC output, compatible with 21V lithium battery packs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDC Interface Connector:\u003c\/strong\u003e Plug-and-play DC adapter tip for secure, stable connection to your battery or device port.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built from high-quality plastic and metal components for long-lasting, dependable performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePractical Length Options:\u003c\/strong\u003e Available in 50 cm and 100 cm cable lengths to suit your workspace needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplacement-Ready:\u003c\/strong\u003e A cost-effective substitute for original OEM charging cables — ideal for replacing worn or damaged accessories.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Pack Options:\u003c\/strong\u003e Choose from a single cable (1 pc) or a value pack of 5 cables — great for workshops, teams, or as backup spares.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 5V (USB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 21V (DC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Boost Line \/ Step-Up Cable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCable Length:\u003c\/strong\u003e 50 cm \/ 100 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic + Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 or 5 × 5V to 21V Boost Charging Cable\u003c\/li\u003e\n  \u003cli\u003e\u003cem\u003eNote: Lithium battery NOT included.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What devices is this 5V to 21V boost charging cable compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This boost cable is designed for use with 21V lithium battery packs that accept a DC charging interface. It is commonly used as a replacement charging cable for cordless power tools and similar battery-powered equipment that require a 21V DC input. Always verify your device's charging port type and voltage requirements before use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this cable replace the original charger that came with my tool?\u003c\/h4\u003e\n\u003cp\u003eA: This cable is an aftermarket replacement and is not an original OEM accessory. It is designed to function as a substitute for damaged or lost 21V lithium battery charging cables. We recommend confirming connector compatibility with your specific battery model before purchase.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What USB power source do I need to use this cable?\u003c\/h4\u003e\n\u003cp\u003eA: The cable accepts a standard 5V USB input, which means you can power it from a USB wall adapter, power bank, or any USB port that provides 5V output. The built-in boost circuit then steps up the voltage to 21V DC for charging your lithium battery pack.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many cables come in the pack?\u003c\/h4\u003e\n\u003cp\u003eA: You can choose between a single cable (1 pc) or a value multi-pack of 5 cables. The multi-pack is ideal for stocking up spares or equipping multiple tools at once. Lithium batteries are not included.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What devices is this 5V to 21V boost charging cable compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This boost cable is designed for use with 21V lithium battery packs that accept a DC charging interface. It is commonly used as a replacement charging cable for cordless power tools and similar battery-powered equipment that require a 21V DC input. Always verify your device's charging port type and voltage requirements before use.\"}}, {\"@type\": \"Question\", \"name\": \"Does this cable replace the original charger that came with my tool?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This cable is an aftermarket replacement and is not an original OEM accessory. It is designed to function as a substitute for damaged or lost 21V lithium battery charging cables. We recommend confirming connector compatibility with your specific battery model before purchase.\"}}, {\"@type\": \"Question\", \"name\": \"What USB power source do I need to use this cable?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The cable accepts a standard 5V USB input, which means you can power it from a USB wall adapter, power bank, or any USB port that provides 5V output. The built-in boost circuit then steps up the voltage to 21V DC for charging your lithium battery pack.\"}}, {\"@type\": \"Question\", \"name\": \"How many cables come in the pack?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"You can choose between a single cable (1 pc) or a value multi-pack of 5 cables. The multi-pack is ideal for stocking up spares or equipping multiple tools at once. Lithium batteries are not included.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"5V to 21V Boost Charging Cable – USB DC Lithium Battery Adapter\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/products\/5v-to-21v-boost-charging-cable-usb-dc-adapter-lithium-battery\"}]}\u003c\/script\u003e","brand":"Axl","offers":[{"title":"50cm 5pcs","offer_id":44163792011351,"sku":"14:10#50cm 5pcs","price":26.53,"currency_code":"USD","in_stock":true},{"title":"100cm 5pcs","offer_id":44163792044119,"sku":"14:175#100cm 5pcs","price":30.18,"currency_code":"USD","in_stock":true},{"title":"50cm 1pcs","offer_id":44163792076887,"sku":"14:193#50cm 1pcs","price":11.97,"currency_code":"USD","in_stock":true},{"title":"100cm 1pcs","offer_id":44163792109655,"sku":"14:29#100cm 1pcs","price":12.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/6008\/7383\/files\/Sf5dd44bd76d84428888e6b87e91a9d34e.webp?v=1786684929","url":"https:\/\/axlcustomersupport.com\/products\/5v-to-21v-boost-charging-cable-usb-dc-adapter-lithium-battery","provider":"Axl","version":"1.0","type":"link"}