{"product_id":"3s-10a-18650-li-ion-battery-protection-board-bms-11v-12-6v","title":"3S 10A 18650 Li-Ion Battery Protection Board 11.1V–12.6V","description":"\u003ch2\u003e3S 10A Li-Ion Lithium Battery Protection Board for 18650 Cells\u003c\/h2\u003e\n\u003cp\u003eKeep your 3-series 18650 lithium battery packs running safely and efficiently with this compact \u003cstrong\u003e3S 10A BMS Protection Board\u003c\/strong\u003e. Designed for 11.1V to 12.6V battery configurations, this SMD board guards your cells against overcharge, over-discharge, overcurrent, and short-circuit events — all in a small, easy-to-integrate package ideal for DIY battery packs, power tools, laptops, and computer applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3S Configuration:\u003c\/strong\u003e Built for three-cell series lithium-ion \/ Li-ion battery packs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e10A Continuous Current Rating:\u003c\/strong\u003e Handles up to 10A load current reliably\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Range:\u003c\/strong\u003e Operating voltage 11.1V (nominal) to 12.6V (fully charged)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCharge Voltage Input:\u003c\/strong\u003e Accepts 12.6V–13V charging input\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature:\u003c\/strong\u003e Performs from -40°C to +50°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercharge Protection:\u003c\/strong\u003e Prevents cells from exceeding safe charge thresholds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Discharge Protection:\u003c\/strong\u003e Cuts off discharge before cells are depleted beyond safe limits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercurrent \u0026amp; Short-Circuit Protection:\u003c\/strong\u003e Automatically disconnects on fault events\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMD Package:\u003c\/strong\u003e Surface-mount design for compact, low-profile integration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Hazardous Chemicals:\u003c\/strong\u003e High-concern chemical substances: None\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  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCell Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3S (3 cells in series)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e11.1V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12.6V\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\u003e12.6V – 13V\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 +50°C\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\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eComputer, DIY Battery Packs, Power Tools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cp\u003eThis BMS board is suitable for a wide variety of 3S 18650 lithium battery pack builds, including laptop battery packs, portable power stations, RC vehicles, power tools, and custom electronics projects. Its robust protection circuitry makes it a trusted choice for hobbyists and professionals alike.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eLooking for more tools and electronics for your DIY projects? Check out these related products:\u003c\/p\u003e\n\u003cul\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  \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\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 does a 3S 10A BMS protection board do for my 18650 lithium battery pack?\u003c\/h4\u003e\n\u003cp\u003eA: A Battery Management System (BMS) protection board monitors and protects your 3-series 18650 lithium-ion cells from unsafe conditions. It automatically prevents overcharging (above 12.6V), over-discharging (below safe cell voltage), overcurrent draw above 10A, and short-circuit events — extending battery life and keeping your setup safe during both charging and discharging cycles.\u003c\/p\u003e\n\u003ch4\u003eQ: What charge voltage should I use with this 3S BMS board?\u003c\/h4\u003e\n\u003cp\u003eA: This board is designed to work with a charger output of 12.6V to 13V. Using a dedicated 3S lithium-ion balance charger or a CC\/CV power supply set to 12.6V is recommended for optimal charging performance and cell longevity.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this BMS board compatible with standard 18650 lithium-ion cells?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This protection board is specifically designed for 3S configurations using standard 18650 Li-ion cells, supporting nominal voltages of 11.1V and a fully charged voltage of 12.6V. It is suitable for building custom battery packs for computers, power tools, and other electronics.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this board handle continuous 10A discharge in real-world use?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the board is rated for 10A continuous discharge current. For best results, ensure adequate heat dissipation in your build and avoid sustained currents at the upper rating limit for extended periods. Operating within the -40°C to +50°C temperature range ensures reliable performance.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does a 3S 10A BMS protection board do for my 18650 lithium battery pack?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A Battery Management System (BMS) protection board monitors and protects your 3-series 18650 lithium-ion cells from unsafe conditions. 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