{"product_id":"3s-11-1v-12-6v-lithium-battery-protection-board-single-double-mos","title":"3S 11.1V 12.6V Lithium Battery Protection Board Single Double MOS","description":"\n\u003ch2\u003e3S Lithium Battery Protection Board – Single \u0026amp; Double MOS for DC Electric Drills\u003c\/h2\u003e\n\u003cp\u003eKeep your lithium battery packs running safely and efficiently with this \u003cstrong\u003e3-string (3S) Lithium Battery Protection Board\u003c\/strong\u003e. Designed for 11.1V to 12.6V battery configurations, this compact BMS (Battery Management System) board provides essential over-charge, over-discharge, and over-current protection for your DC electric drill battery packs and other 3-cell lithium battery assemblies.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in both \u003cstrong\u003eSingle MOS\u003c\/strong\u003e and \u003cstrong\u003eDouble MOS\u003c\/strong\u003e configurations, this board suits a wide range of DIY power tool builds, battery rebuild projects, and custom lithium pack assemblies. The double MOS variant offers enhanced current handling for more demanding applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3S Compatibility:\u003c\/strong\u003e Supports 3-cell lithium battery strings at 11.1V (nominal) and up to 12.6V (fully charged)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle \u0026amp; Double MOS Options:\u003c\/strong\u003e Choose the right configuration for your current load requirements\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Protection Functions:\u003c\/strong\u003e Guards against over-charge, over-discharge, over-current, and short-circuit conditions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact PCB Design:\u003c\/strong\u003e Easy to integrate into battery packs for DC electric drills and similar power tools\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Input Range:\u003c\/strong\u003e Compatible with USB-based charging setups (5–20V DC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Reliable PCB build for long-lasting performance in demanding environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCell Configuration:\u003c\/strong\u003e 3S (3-string)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Voltage:\u003c\/strong\u003e 11.1V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Charge Voltage:\u003c\/strong\u003e 12.6V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMOS Type:\u003c\/strong\u003e Single MOS \/ Double MOS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Range:\u003c\/strong\u003e USB (5–20V DC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e LH0281\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e 1 × Lithium Battery Protection Board\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePlease Note:\u003c\/strong\u003e Color will be sent randomly. The product may be upgraded over time; appearance and color are subject to change without prior notice. Please consider this before placing your order if you have a specific color or appearance requirement.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/airtight-transparent-pet-storage-bottle-craft-beads-home-organization\"\u003eAirtight Transparent PET Storage Bottle | Beads \u0026amp; Crafts\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/leather-hole-punch-tool-diy-stitching-punch-4-5-6mm\"\u003eLeather Hole Punch Tool | DIY Stitching Punch 4\/5\/6mm\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/uv-shaped-leather-groover-skiving-tool-kit-4-piece-diy\"\u003eU \u0026amp; V Leather Groover Skiving Tool Kit – 4-Piece Stainless Set\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: What does a 3S lithium battery protection board do?\u003c\/h4\u003e\n\u003cp\u003eA: A 3S lithium battery protection board (BMS) monitors and protects a 3-cell lithium battery string from over-charging, over-discharging, over-current, and short-circuit events. It helps extend battery life and ensures safe operation in devices like DC electric drills and DIY power tool packs.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between Single MOS and Double MOS protection boards?\u003c\/h4\u003e\n\u003cp\u003eA: Single MOS boards use one MOSFET transistor for switching, suitable for lighter current loads. Double MOS boards use two MOSFETs, which can handle higher current demands and provide more robust protection — making them better suited for higher-drain applications like electric drills.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this 3S BMS board compatible with my DC electric drill battery pack?\u003c\/h4\u003e\n\u003cp\u003eA: This protection board is designed for 3-string (3S) lithium battery configurations with a nominal voltage of 11.1V and a max charge voltage of 12.6V. It is compatible with most standard 3S lithium battery packs used in DC electric drills. Always verify your battery pack's cell count and voltage rating before installation.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this board come with a battery or charger?\u003c\/h4\u003e\n\u003cp\u003eA: No, this listing includes only the battery protection board (1 piece). Batteries and chargers are sold separately.\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\": \"What does a 3S lithium battery protection board do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A 3S lithium battery protection board (BMS) monitors and protects a 3-cell lithium battery string from over-charging, over-discharging, over-current, and short-circuit events. 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