{"product_id":"18v-21v-battery-pack-dual-usb-adapter-led-indicator","title":"18V\/21V Battery Pack Dual USB Adapter with LED Indicator","description":"\u003ch2\u003ePower Your Devices Anywhere with Your Existing 18V\/21V Battery Pack\u003c\/h2\u003e\n\u003cp\u003eTransform your compatible 18V or 21V power tool battery into a versatile USB charging hub with this compact Battery Pack Power Adapter. Whether you're working in the garage, setting up camp, or simply need a backup charging option away from a wall outlet, this adapter lets you tap into your existing battery ecosystem to keep your phones, tablets, and small electronics charged and ready.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual USB Output:\u003c\/strong\u003e Two USB ports let you charge multiple small devices simultaneously — ideal for workshops, camping trips, and on-the-go power needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Status Indicator:\u003c\/strong\u003e Built-in LED light gives you a clear visual cue so you always know when the adapter is active and your devices are receiving power.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Supports USB output from 5V to 20V DC, making it compatible with a broad range of small electronics and charging requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable ABS Housing:\u003c\/strong\u003e The rugged ABS shell is built to withstand everyday workshop and outdoor handling, keeping your setup organized and protected.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable Size:\u003c\/strong\u003e Measuring approximately 11 cm × 8.5 cm × 4.5 cm (4.33\" × 3.35\" × 1.77\"), this adapter stores neatly in tool bags, drawers, or backpacks without taking up valuable space.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesigned for 18V\/21V Battery Packs:\u003c\/strong\u003e Slots directly onto compatible 18V\/21V battery packs — no extra converters or accessories needed. Simply attach and start charging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Battery Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18V \/ 21V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSB Output Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5–20V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of USB Ports\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eABS Plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 11 × 8.5 × 4.5 cm \/ 4.33 × 3.35 × 1.77 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLED Indicator\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Battery Pack USB Adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Battery pack is NOT included. This adapter is designed to work with your existing compatible 18V\/21V battery.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWorkshop and garage use — charge your phone while you work without hunting for a wall outlet\u003c\/li\u003e\n  \u003cli\u003eCamping and outdoor adventures — leverage your tool battery as an off-grid power source\u003c\/li\u003e\n  \u003cli\u003eEmergency backup charging at home or on job sites\u003c\/li\u003e\n  \u003cli\u003eTravel prep and portable power setups\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: Which battery packs is this 18V\/21V USB adapter compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This battery adapter is designed for compatible 18V and 21V power tool battery packs. It is intended for use with slide-style battery packs that match its terminal layout. Please compare the connector design with your existing battery pack before purchasing to ensure compatibility.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many devices can I charge at once with this battery pack USB adapter?\u003c\/h4\u003e\n\u003cp\u003eA: The adapter features dual USB output ports, allowing you to charge two devices simultaneously — such as a smartphone and a tablet or a pair of small camping electronics — as long as your battery pack has sufficient charge.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the battery pack included with this adapter?\u003c\/h4\u003e\n\u003cp\u003eA: No, the battery pack is not included. This adapter is sold on its own and is intended to work with a compatible 18V\/21V battery pack you already own. This makes it a cost-effective way to expand the utility of your existing battery tool ecosystem.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What does the LED indicator light do on this USB battery adapter?\u003c\/h4\u003e\n\u003cp\u003eA: The built-in LED indicator illuminates when the adapter is connected to a battery pack and actively providing power through the USB ports. It gives you a quick, at-a-glance status check so you always know your devices are being charged.\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\": \"Which battery packs is this 18V\/21V USB adapter compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This battery adapter is designed for compatible 18V and 21V power tool battery packs. It is intended for use with slide-style battery packs that match its terminal layout. 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