{"product_id":"7-4v-li-ion-usb-charger-rc-car-boat-sm-xh-connector","title":"7.4V Li-ion USB Charger for RC Cars \u0026 Boats – SM\/XH Connector","description":"\n\u003ch2\u003e7.4V Li-ion USB Charging Cable for RC Cars, Boats \u0026amp; Electric Toys\u003c\/h2\u003e\n\u003cp\u003eKeep your RC vehicles powered up and ready to go with this compact, reliable \u003cstrong\u003e7.4V (3.7V x2) Li-ion USB charging cable\u003c\/strong\u003e from FUCHU. Compatible with a wide range of SM and XH connector types — including SM-2P, SM-3P, SM-4P (Reverse), XH-3P, and XH-4P — this charger is an essential accessory for RC car and boat enthusiasts.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eWhy You'll Love It\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal USB Input:\u003c\/strong\u003e Automatically adapts to USB power sources (5–20V DC), making it easy to charge from power banks, laptops, wall adapters, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntelligent Load Detection:\u003c\/strong\u003e Built-in smart chip identifies the load and blocks excessive current, protecting your batteries and devices from damage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Connector Compatibility:\u003c\/strong\u003e Supports SM-2P, SM-3P, SM-4P Reverse, XH-3P, and XH-4P connectors — perfect for a broad variety of RC toys, electric cars, and boats.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSteady 400mA Output:\u003c\/strong\u003e Delivers a consistent 400mA output current at 7.4V \/ 3.7V for safe, stable charging every time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable:\u003c\/strong\u003e Approximately 64cm (2.47 in) cable length makes it easy to store and carry wherever your RC adventures take you.\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\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.4V (3.7V x2)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤37.5W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB (5–20V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 64cm \/ 2.47 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnector Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSM-2P, SM-3P, SM-4P Reverse, XH-3P, XH-4P\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLi-ion\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMicro USB (0.3m)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x USB Li-ion Charging Cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Before connecting, always verify the correct Positive\/Negative polarity between the charger connector and your battery. Using the wrong polarity may cause damage.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1000d-tactical-edc-bag-military-ammo-pouch-hunting-wash-bag-dump-pouch-portable-tool-storage-handbag-compatible-military-utility\"\u003e1000D Tactical EDC Bag – Military Utility Tool Storage\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-2-pin-quick-splice-spring-wire-connectors-lock-terminals\"\u003e10pcs 2-Pin Spring Wire Connectors – Quick Splice Lock Terminals\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge\"\u003e10PCS Stainless Steel Self-Tapping Screws – Phillips\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Which RC car and boat battery connectors is this USB charger compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This Li-ion USB charger is compatible with SM-2P, SM-3P, SM-4P (Reverse), XH-3P, and XH-4P connectors, covering a wide range of RC electric toys, cars, and boats that use 3.7V or 7.4V lithium-ion batteries.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I charge with a power bank or laptop using this cable?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The charger automatically adapts to any standard USB power source operating between 5V and 20V DC — including power banks, laptop USB ports, and USB wall adapters — making it very versatile for on-the-go charging.\u003c\/p\u003e\n\u003ch4\u003eQ: How does the intelligent chip protect my batteries?\u003c\/h4\u003e\n\u003cp\u003eA: The built-in intelligent load identification chip monitors the connected battery and prevents excessive current from entering the circuit. This helps safeguard your Li-ion battery and RC device from overcharging or electrical damage.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the output current and is it safe for my Li-ion battery?\u003c\/h4\u003e\n\u003cp\u003eA: The charger delivers a steady 400mA output current at 7.4V, which is a safe and controlled charging rate for compatible Li-ion batteries used in RC cars, boats, and electric toys.\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 RC car and boat battery connectors is this USB charger compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This Li-ion USB charger is compatible with SM-2P, SM-3P, SM-4P (Reverse), XH-3P, and XH-4P connectors, covering a wide range of RC electric toys, cars, and boats that use 3.7V or 7.4V lithium-ion batteries.\"}}, {\"@type\": \"Question\", \"name\": \"Can I charge with a power bank or laptop using this cable?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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