{"product_id":"18650-bms-20v-lithium-battery-protection-circuit-board-1","title":"18650 BMS 20V Li-Ion Battery Protection Circuit Board 1\/2PCS","description":"\n\u003ch2\u003e18650 Li-Ion BMS 20V Battery Protection Circuit Board\u003c\/h2\u003e\n\u003cp\u003eKeep your 18650 lithium battery packs running safely and efficiently with this 20V Battery Management System (BMS) Protection Circuit Board. Designed specifically for electric power tools and DIY electrical projects, this board uses a dedicated lithium battery IC processor to monitor real-time voltage, charge\/discharge current, and ambient temperature — ensuring your batteries stay protected at all times.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReal-Time Monitoring:\u003c\/strong\u003e Dedicated lithium battery IC continuously tracks voltage, current, and temperature for every cell in your pack.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercharge Protection:\u003c\/strong\u003e Automatically cuts off charging when the battery reaches maximum capacity, preventing damage from excessive voltage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Discharge Protection:\u003c\/strong\u003e Stops discharge before the battery drops below safe voltage levels, preserving cell longevity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShort-Circuit Protection:\u003c\/strong\u003e Instantly interrupts the circuit in the event of a short, safeguarding both your battery and your device.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverheating Safeguard:\u003c\/strong\u003e Monitors ambient temperature and halts operation if unsafe heat levels are detected.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Quality PCB Construction:\u003c\/strong\u003e Built from durable, reliable PCB material engineered for prolonged use and consistent performance in demanding power tool applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Straightforward setup makes it accessible for both seasoned professionals and enthusiastic DIYers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Battery:\u003c\/strong\u003e 18650 Li-Ion \/ Lithium Battery\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 20V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Use:\u003c\/strong\u003e Electric power tools, DIY electrical projects\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e PCB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e As shown\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 or 2 × Battery Protection Board (as selected)\u003c\/li\u003e\n  \u003cli\u003e\u003cem\u003eNote: Batteries and power tools are NOT included.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to light reflection and display differences, the item color in photos may vary slightly. Measurement tolerance is ±1–3 cm.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\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\/12pcs-16mm-momentary-push-button-switch-1no-metal-2-pin-self-reset\"\u003e12pcs 16mm Momentary Push Button Switch 1NO Metal 2-Pin Self-Reset\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 M2.2–M4.8 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: What battery type is this BMS protection board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This battery protection circuit board is designed for 18650 lithium-ion (Li-Ion) battery packs operating at 20V. It is primarily intended for use with electric power tools and similar DIY electrical applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What protections does this BMS circuit board provide?\u003c\/h4\u003e\n\u003cp\u003eA: The 20V BMS board provides overcharge protection, over-discharge protection, short-circuit protection, and overheating safeguards. Its dedicated lithium battery IC monitors real-time voltage, charge\/discharge current, and ambient temperature to keep your battery pack operating safely.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this battery management board easy to install for a DIY enthusiast?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The board is designed with a user-friendly, straightforward installation process, making it suitable for both experienced professionals and hobbyist DIYers working on battery pack builds or replacements for power tools.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the package include batteries or power tools?\u003c\/h4\u003e\n\u003cp\u003eA: No. The package includes only the battery protection board(s) — either 1 or 2 pieces depending on your selection. Batteries and power tools are not included.\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 battery type is this BMS protection board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This battery protection circuit board is designed for 18650 lithium-ion (Li-Ion) battery packs operating at 20V. 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