{"product_id":"18v-li-ion-battery-protection-board-bms-pcb-for-power-tools","title":"18V Li-Ion Battery Protection Board BMS PCB for Power Tools","description":"\n\u003ch2\u003e18V Li-Ion Battery Protection Board with Equalizer Plate – BL1830 Compatible PCB for Power Tools\u003c\/h2\u003e\n\u003cp\u003eUpgrade or repair your 18V power tool battery packs with this high-performance \u003cstrong\u003eBattery Protection Board (BMS PCB)\u003c\/strong\u003e. Engineered for 5S lithium-ion and lithium polymer battery packs, this board delivers reliable overcharge and over-discharge protection, ensuring your battery system operates safely and lasts longer. Compatible with BL1830, 18650, and 21700 cell configurations, it's the ideal solution for DIY electronics enthusiasts and professional tool repair technicians alike.\u003c\/p\u003e\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\u003eOvercharge \u0026amp; Over-Discharge Protection:\u003c\/strong\u003e Designed specifically for 5S Li-ion and Li-polymer battery packs, this board safeguards your cells from damaging charge and discharge extremes, extending battery lifespan and improving overall safety.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Current Management:\u003c\/strong\u003e Supports a maximum continuous discharge current of \u003cstrong\u003e60A\u003c\/strong\u003e and a charging current of \u003cstrong\u003e12A\u003c\/strong\u003e, optimizing power delivery and preventing damage from excessive current loads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Advanced temperature monitoring keeps the board operating safely between \u003cstrong\u003e-20°C and +85°C\u003c\/strong\u003e, protecting against damage in demanding or extreme environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUser-Friendly Connectivity:\u003c\/strong\u003e Includes multiple connection ports (B+, B-, P+) for seamless integration with a wide range of devices. Built-in LED indicators provide real-time status feedback and alerts at a glance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e Measuring just \u003cstrong\u003e100mm × 50mm\u003c\/strong\u003e and weighing approximately \u003cstrong\u003e22.5g\u003c\/strong\u003e, this board fits neatly into tight battery enclosures without adding unnecessary bulk.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEqualizer Plate Included:\u003c\/strong\u003e The integrated cell balancing equalizer plate ensures uniform charge distribution across all cells, maximizing performance and cycle life.\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\u003eCompatible Battery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5S Li-ion \/ Li-polymer (18V)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Cell Format\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18650 \/ 21700 (BL1830 series)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Continuous Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12A\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-20°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100mm × 50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~22.5g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMetal \/ Plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection Ports\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB+, B-, P+\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLED Indicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes – real-time status \u0026amp; alerts\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Battery Protection Board (PCB BMS with Equalizer Plate)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cp\u003eLooking for more tools and electronics accessories? Check out these popular items in our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ancient-nutrition-multi-collagen-advanced-muscle-60-capsules\"\u003eAncient Nutrition Multi Collagen Advanced Muscle 60 Capsules\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/bu-29mm-sinking-minnow-jerkbait-fishing-lure-bass-trout-pike\"\u003eB\u0026amp;U 29mm Sinking Minnow Jerkbait Lure – Bass Trout Pike\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Monitor color calibration and ambient lighting may cause slight color variations from product images. Please allow ±2mm measurement tolerance for all listed dimensions.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What battery packs is this 18V BMS protection board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This battery protection board is designed for 5S lithium-ion and lithium polymer battery packs operating at 18V, including BL1830-style packs built with 18650 or 21700 cells. It is widely used for DIY power tool battery rebuilds and repairs.\u003c\/p\u003e\n\u003ch4\u003eQ: What protection features does this PCB board provide?\u003c\/h4\u003e\n\u003cp\u003eA: The board provides overcharge protection, over-discharge protection, overcurrent protection (up to 60A continuous discharge \/ 12A charge), and temperature safeguards across a -20°C to +85°C operating range. The equalizer plate also balances cell voltages to maximize battery efficiency and longevity.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this board difficult to install for a DIY project?\u003c\/h4\u003e\n\u003cp\u003eA: The board features clearly labeled connection ports (B+, B-, P+) and onboard LED status indicators, making it straightforward for experienced DIY electronics enthusiasts to install. Basic soldering skills and familiarity with lithium battery handling are recommended for safe installation.\u003c\/p\u003e\n\u003ch4\u003eQ: What are the dimensions and weight of this protection board?\u003c\/h4\u003e\n\u003cp\u003eA: The board measures 100mm in length by 50mm in width and weighs approximately 22.5g, making it compact and lightweight enough to fit inside standard 18V power tool battery housings.\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 packs is this 18V BMS protection board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This battery protection board is designed for 5S lithium-ion and lithium polymer battery packs operating at 18V, including BL1830-style packs built with 18650 or 21700 cells. 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