{"product_id":"21v-2a-lithium-ion-battery-charger-universal-round-hole-adapter","title":"21V 2A Lithium Ion Battery Charger – Universal Round Hole Adapter","description":"\n\u003ch2\u003e21V 2A Universal Lithium Ion Battery Charger\u003c\/h2\u003e\n\u003cp\u003eKeep your cordless power tools running at full capacity with this \u003cstrong\u003e21V 2A Lithium Ion Battery Charger\u003c\/strong\u003e. Designed as a universal round-hole adapter, it's compatible with a wide range of 21V lithium-ion battery packs used in electric wrenches, angle grinders, electric saws, and more. Whether you're a DIY enthusiast or a professional tradesperson, this compact and reliable charger is a workshop essential.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Round-hole connector fits a broad range of 21V lithium-ion battery packs for common power tools.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e21V \/ 2A Output:\u003c\/strong\u003e Delivers a steady 2A charge to efficiently restore your battery without overloading it.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Measures just 11.5 × 5.5 cm (4.52 × 2.16 in) — easy to store in a toolbox or on a workbench.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built from sturdy plastic housing that withstands the demands of a workshop environment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSleek Black Finish:\u003c\/strong\u003e Classic black color blends seamlessly with most power tool setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Charge Convenience:\u003c\/strong\u003e Simple, straightforward operation — just plug in and let it charge.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 21V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Current:\u003c\/strong\u003e 2A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Round Hole (Universal)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 11.5 × 5.5 cm \/ 4.52 × 2.16 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Tools Is It Compatible With?\u003c\/h3\u003e\n\u003cp\u003eThis charger is designed to work with 21V lithium-ion batteries commonly found in:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eElectric Wrenches\u003c\/li\u003e\n  \u003cli\u003eAngle Grinders\u003c\/li\u003e\n  \u003cli\u003eElectric Saws (circular, reciprocating, and jig saws)\u003c\/li\u003e\n  \u003cli\u003eCordless Drills and Drivers\u003c\/li\u003e\n  \u003cli\u003eOther 21V round-hole lithium-ion battery-powered tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on safe use of battery chargers and electrical equipment, visit the U.S. Consumer Product Safety Commission (CPSC) Battery Safety resource.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Battery_charger\" target=\"_blank\" rel=\"noopener\"\u003eBattery charger\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What types of power tools is this 21V lithium ion battery charger compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This universal 21V 2A charger is compatible with a wide range of cordless power tools that use 21V lithium-ion battery packs with a round-hole connector, including electric wrenches, angle grinders, electric saws, and cordless drills. Always verify your battery's voltage and connector type before use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What are the dimensions and materials of this lithium battery charger?\u003c\/h4\u003e\n\u003cp\u003eA: The charger measures 11.5 × 5.5 cm (approximately 4.52 × 2.16 inches) and is constructed from durable plastic. Its compact size makes it easy to store in a toolbox or on a workbench without taking up much space.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I use the 21V 2A universal round hole battery charger?\u003c\/h4\u003e\n\u003cp\u003eA: Simply insert your compatible 21V lithium-ion battery pack into the charger's round-hole connector and plug the charger into a standard wall outlet. The charger will deliver a consistent 2A current to restore your battery. Always charge in a well-ventilated area and follow basic electrical safety practices.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What types of power tools is this 21V lithium ion battery charger compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This universal 21V 2A charger is compatible with a wide range of cordless power tools that use 21V lithium-ion battery packs with a round-hole connector, including electric wrenches, angle grinders, electric saws, and cordless drills. 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