{"product_id":"21v-smart-fast-charger-cordless-drill-electric-wrench-batteries","title":"21V Smart Fast Charger for Cordless Drill \u0026 Power Tool Batteries","description":"\n\u003ch2\u003e21V Smart Fast Charger – Reliable Power for Your Cordless Tools\u003c\/h2\u003e\n\u003cp\u003eKeep your power tools ready to go with this compact and intelligent 21V Smart Fast Charger. Designed for cordless drills, electric wrenches, and other 21V lithium-ion battery tools, this charger delivers fast, stable charging with built-in smart auto-stop technology to protect your batteries and extend their lifespan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal 21V Compatibility:\u003c\/strong\u003e Works with most 21V lithium-ion batteries equipped with a 5.5mm DC plug — ideal for everyday cordless power tools.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmart LED Indicator:\u003c\/strong\u003e Red light indicates active fast charging; green light signals a full charge. Simple, at-a-glance status monitoring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto-Stop Technology:\u003c\/strong\u003e Automatically stops charging when the battery is full, preventing overcharging and maximizing battery longevity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Input (100–240V):\u003c\/strong\u003e Compatible with global power standards — perfect for home, workshop, or travel use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable, Heat-Resistant Build:\u003c\/strong\u003e Crafted with high-quality materials, a heat-resistant housing, and robust metal contacts for long-lasting, dependable performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Convenience:\u003c\/strong\u003e US standard plug, approximately 90 cm cable on both the AC and DC sides, and a compact form factor make this charger effortless to use anywhere.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSmart Battery Charger\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC Plug Standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUS\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 100V–240V, 50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplicable Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e21V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Adaptor Jack\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.5mm × 2.5–2.1mm Compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Length (DC Side)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 90 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Length (AC Side)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 90 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× 21V Smart Fast Charger\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-10g-high-grade-silicon-grease-lubricant-o-lubrication-good-odorless-smoothness-for-o-rings-tube-silicone-grease-lubricant\"\u003e1PC 10g High Grade Silicon Grease Lubricant for O-Rings \u0026amp; Tools\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/3pcs-silicone-sealant-scraper-set-multi-functional-caulking-nozzle-tools-for-tile-floor-joints-grout-finishing-and-renovation\"\u003e3PCS Silicone Sealant Scraper Set – Multi-Functional Caulking Tools\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-multi-use-faucet-bubbler-wrenches-6-sizes-sink-wrenches-detach-tool-for-kitchen-bathroom-faucet-parts-repair-spanner\"\u003e1PC Multi-Use Faucet Bubbler Wrench Set – 6 Sizes\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What types of batteries is this 21V smart charger compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This charger is compatible with most 21V lithium-ion batteries that use a standard 5.5mm DC plug, including those used in cordless drills and electric wrenches. Always verify your battery's voltage and plug size before use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I know when my battery is fully charged?\u003c\/h4\u003e\n\u003cp\u003eA: The smart LED indicator makes it easy — the light glows \u003cstrong\u003ered\u003c\/strong\u003e during active charging and switches to \u003cstrong\u003egreen\u003c\/strong\u003e once the battery is fully charged. The charger will automatically stop delivering power to prevent overcharging.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this charger when traveling internationally?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This charger supports a wide input voltage range of 100V–240V at 50\/60Hz, making it suitable for use in most countries worldwide. Please note it comes with a US standard AC plug, so a plug adapter may be needed in other regions.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How long are the charger cables?\u003c\/h4\u003e\n\u003cp\u003eA: Both the AC plug side and the DC (5.5mm) plug side feature cables approximately 90 cm (about 35 inches) long, giving you comfortable reach during charging sessions.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What types of batteries is this 21V smart charger compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This charger is compatible with most 21V lithium-ion batteries that use a standard 5.5mm DC plug, including those used in cordless drills and electric wrenches. Always verify your battery's voltage and plug size before use.\"}}, {\"@type\": \"Question\", \"name\": \"How do I know when my battery is fully charged?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The smart LED indicator makes it easy — the light glows red during active charging and switches to green once the battery is fully charged. The charger will automatically stop delivering power to prevent overcharging.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this charger when traveling internationally?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! This charger supports a wide input voltage range of 100V–240V at 50\/60Hz, making it suitable for use in most countries worldwide. Please note it comes with a US standard AC plug, so a plug adapter may be needed in other regions.\"}}, {\"@type\": \"Question\", \"name\": \"How long are the charger cables?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Both the AC plug side and the DC (5.5mm) plug side feature cables approximately 90 cm (about 35 inches) long, giving you comfortable reach during charging sessions.\"}}]}\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:\/\/x1davz-b4.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/x1davz-b4.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"21V Smart Fast Charger for Cordless Drill \u0026 Power Tool Batteries\", \"item\": \"https:\/\/x1davz-b4.myshopify.com\/products\/21v-smart-fast-charger-cordless-drill-electric-wrench-batteries\"}]}\u003c\/script\u003e","brand":"Nixie","offers":[{"title":"100V-240V US Plug","offer_id":67610176192611,"sku":"1005013280757138-100V-240V US Plug","price":9.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/2047\/6003\/files\/Scbc237a7da984f0d9b4640aa8797272dy.webp?v=1790793428","url":"https:\/\/nixiehaven.com\/products\/21v-smart-fast-charger-cordless-drill-electric-wrench-batteries","provider":"Nixie","version":"1.0","type":"link"}