{"product_id":"18v-li-ion-battery-pcb-protection-board-bl1830-bl1850-bl1860","title":"18V Li-Ion Battery PCB Protection Board – BL1830 BL1850 BL1860","description":"\n\u003ch2\u003e18V Li-Ion Battery PCB Charging Protection Circuit Board\u003c\/h2\u003e\n\u003cp\u003eKeep your 18V power tool batteries running safely and efficiently with this durable \u003cstrong\u003eLi-Ion Battery PCB Charging Protection Circuit Board\u003c\/strong\u003e. Designed as a direct replacement for Makita BL1830, BL1840, BL1850, and BL1860 battery packs, this compact green PCB board guards your battery cells against overcharge, over-discharge, and overheating — extending the working life of your battery pack.\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\u003eUniversal Compatibility:\u003c\/strong\u003e Fits 18V BL1830, BL1840, BL1850, and BL1860 Li-Ion power tool battery packs (1.5Ah, 3Ah, 6Ah, 9Ah)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercharge Protection:\u003c\/strong\u003e Cuts off at 4.25V per cell with a 2-second detection delay to prevent cell damage\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Discharge Protection:\u003c\/strong\u003e Activates at 14V to protect cells from deep discharge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Temperature Protection:\u003c\/strong\u003e Shuts down at 100°C, recovers at 85°C for safe thermal management\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Charging Current:\u003c\/strong\u003e Supports up to 12A for fast, reliable charging cycles\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Made from CCL (Copper Clad Laminate) for long-lasting, repeated use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5-String Cell Configuration:\u003c\/strong\u003e Perfectly matched to standard 18V Li-Ion pack architecture\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Size:\u003c\/strong\u003e 45 × 32mm — fits neatly inside existing battery housings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Li-Ion Battery Charging Protection Board (PCB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e 18V BL1830, BL1840, BL1850, BL1860\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e CCL (Copper Clad Laminate)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 18V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Capacity:\u003c\/strong\u003e 3.0Ah\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Type:\u003c\/strong\u003e Li-Ion\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Combination:\u003c\/strong\u003e 5 strings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Charging Current:\u003c\/strong\u003e ≤12A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercharge Voltage Protection:\u003c\/strong\u003e 4.25V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercharge Detection Delay:\u003c\/strong\u003e 2 seconds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Discharge Voltage Protection:\u003c\/strong\u003e 14V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Temperature Protection:\u003c\/strong\u003e 100°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Temperature Recovery:\u003c\/strong\u003e 85°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStatic Power Consumption:\u003c\/strong\u003e 20.2µA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 45 × 32mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Green\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Lithium Battery PCB Protection Circuit Board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Screen brightness and lighting conditions may cause slight color variation from product images. Minor measurement deviations may occur due to manual measurement.\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\/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: Which battery models is this 18V PCB protection board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This Li-Ion battery PCB charging protection circuit board is compatible with 18V Makita-style BL1830, BL1840, BL1850, and BL1860 battery packs across capacities of 1.5Ah, 3Ah, 6Ah, and 9Ah. Always verify your battery's cell string configuration (5-string, 18V) before installation.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the PCB board protect against both overcharging and over-discharging?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The board provides overcharge protection at 4.25V per cell with a 2-second detection delay, and over-discharge protection that activates at 14V total pack voltage. It also includes over-temperature protection, shutting off at 100°C and automatically recovering at 85°C.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this a complete battery pack or just the circuit board?\u003c\/h4\u003e\n\u003cp\u003eA: This listing is for the PCB protection circuit board only — no battery cells, charger, or housing are included. It is a replacement\/repair component intended for use by those rebuilding or servicing existing 18V Li-Ion battery packs.\u003c\/p\u003e\n\u003ch4\u003eQ: What material is this PCB board made from?\u003c\/h4\u003e\n\u003cp\u003eA: The board is constructed from CCL (Copper Clad Laminate), a robust substrate widely used in professional-grade circuit board manufacturing. This ensures reliable conductivity and durability through many charge and discharge cycles.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which battery models is this 18V PCB protection board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This Li-Ion battery PCB charging protection circuit board is compatible with 18V Makita-style BL1830, BL1840, BL1850, and BL1860 battery packs across capacities of 1.5Ah, 3Ah, 6Ah, and 9Ah. 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