{"product_id":"4s-14-8v-12a-li-ion-battery-charger-board-for-18650-cells","title":"4S 14.8V 12A Li-Ion Battery Charger Board for 18650 Cells","description":"\u003ch2\u003e4S 14.8V 12A Li-Ion Battery Charger Board for 18650 Cells\u003c\/h2\u003e\n\u003cp\u003ePower your projects with confidence using this compact and reliable \u003cstrong\u003e4S Li-Ion Battery Charger Board\u003c\/strong\u003e. Engineered for 4-series 18650 lithium-ion battery packs, this board delivers a stable \u003cstrong\u003e14.8V \/ 12A charging solution\u003c\/strong\u003e with a precise charge voltage of 16.8V–17V — perfect for DIY electronics, battery pack builds, robotics, and computer UPS applications.\u003c\/p\u003e\n\n\u003cp\u003eWith its ultra-slim SMD design (\u003cstrong\u003e72 × 17 × 3.0mm\u003c\/strong\u003e), this board fits neatly into tight enclosures while handling high-current charging tasks. Compatible with standard \u003cstrong\u003e3.7V 18650 cells\u003c\/strong\u003e wired in a 4S configuration (up to 16.8V nominal), it's a go-to component for engineers, hobbyists, and makers alike.\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\u003e4S Configuration:\u003c\/strong\u003e Designed for four 3.7V Li-Ion cells wired in series (14.8V nominal \/ 16.8V fully charged)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Current Output:\u003c\/strong\u003e Supports up to 12A charging current for fast, efficient battery pack top-ups\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCharge Voltage:\u003c\/strong\u003e 16.8V–17V input charge voltage for accurate cell balancing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature:\u003c\/strong\u003e Rated from -40°C to +85°C — reliable in demanding environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact SMD Form Factor:\u003c\/strong\u003e Just 72 × 17 × 3.0mm — easy to integrate into custom enclosures and PCB assemblies\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Clean component materials for safer handling and disposal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand new\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 board per order\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4S (4-Series Li-Ion)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Battery Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.8V (4 × 3.7V cells)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharge Input Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16.8V – 17V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72 × 17 × 3.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSMD\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\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\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eGreat for Use With\u003c\/h3\u003e\n\u003cp\u003eThis charger board pairs well with a range of DIY electronics and power projects. If you're building or maintaining your own tools and kits, you may also find these related products useful:\u003c\/p\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 battery configuration is this 4S 14.8V charger board designed for?\u003c\/h4\u003e\n\u003cp\u003eA: This board is designed for a 4S (4-series) lithium-ion battery configuration, which means four 3.7V 18650 cells connected in series, giving a nominal pack voltage of 14.8V and a full-charge voltage of 16.8V. It supports a maximum charging current of 12A.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the required input charge voltage for this board?\u003c\/h4\u003e\n\u003cp\u003eA: The board requires a charge input voltage of 16.8V to 17V. Always use a regulated power supply within this range to ensure safe and accurate charging of your 4S Li-Ion battery pack.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this charger board be used in extreme temperature environments?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The board is rated for an operating temperature range of -40°C to +85°C, making it suitable for use in a wide variety of environments, from cold storage applications to high-heat industrial or DIY setups.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this board compatible with 18650 lithium-ion cells only?\u003c\/h4\u003e\n\u003cp\u003eA: This board is optimized for standard 3.7V 18650 Li-Ion cells in a 4S configuration. It may work with other 3.7V Li-Ion cell formats wired in a 4S setup, but always verify compatibility with your specific cells before use.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What battery configuration is this 4S 14.8V charger board designed for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This board is designed for a 4S (4-series) lithium-ion battery configuration, which means four 3.7V 18650 cells connected in series, giving a nominal pack voltage of 14.8V and a full-charge voltage of 16.8V. It supports a maximum charging current of 12A.\"}}, {\"@type\": \"Question\", \"name\": \"What is the required input charge voltage for this board?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The board requires a charge input voltage of 16.8V to 17V. 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