{"product_id":"18v-battery-pcb-protection-board-makita-bl1830-bl1840-bl1850-bl1860","title":"18V PCB Protection Board for Makita BL1830 BL1840 BL1850 BL1860","description":"\u003ch2\u003eRestore Your Makita 18V Battery with a High-Quality Replacement PCB Board\u003c\/h2\u003e\n\u003cp\u003eGive your Makita 18V lithium-ion power tool battery a second life with this precision-engineered \u003cstrong\u003e18V Battery Chip PCB Protection Board\u003c\/strong\u003e. Designed as a direct replacement for Makita BL1830, BL1840, BL1850, and BL1860 battery packs, this board provides essential charging and discharging protection — keeping your battery running safely and efficiently for as long as possible.\u003c\/p\u003e\n\u003cp\u003eMade in China.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Replace Your Battery PCB Board?\u003c\/h3\u003e\n\u003cp\u003eThe PCB (Printed Circuit Board) protection board is the \"brain\" of your lithium-ion battery. It monitors and controls charging\/discharging cycles, prevents overcharging, over-discharging, and dangerous overheating. When this board fails, your entire battery pack can become unusable — even if the cells themselves are still good. Replacing the PCB board is a cost-effective repair that can save you the expense of buying a whole new battery.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e100% Brand New\u003c\/strong\u003e — High-quality CCL (Copper Clad Laminate) construction\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDirect Replacement\u003c\/strong\u003e — Compatible with Makita BL1830, BL1840, BL1850, BL1860 (18V Li-ion)\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eOvercharge Protection\u003c\/strong\u003e — Cuts off at 4.25V per cell to prevent overcharging\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eOver-Discharge Protection\u003c\/strong\u003e — Protects cells when voltage drops below 14V\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eOver-Temperature Protection\u003c\/strong\u003e — Activates at 100°C; recovers at 85°C\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDurable Design\u003c\/strong\u003e — Built to last the full life of the battery cells\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eEasy DIY Repair\u003c\/strong\u003e — Ideal for hobbyists, technicians, and power tool enthusiasts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMakita BL1830, BL1840, BL1850, BL1860\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCharging Protection Board\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCCL (Copper Clad Laminate)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.0Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLi-ion\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Combination\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 Strings\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Charging Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤12A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOvercharge Voltage Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.25V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOvercharge Detection Delay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver-Discharge Voltage Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver-Temperature Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100°C (activates) \/ 85°C (recovers)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 × PCB Protection Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 18V Lithium Battery PCB Protection Board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSafety \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eWorking with lithium-ion battery packs requires care. Always discharge the battery fully before disassembly, work in a dry environment, and use appropriate tools. For more information on lithium battery safety, refer to the U.S. Consumer Product Safety Commission's Lithium-Ion Battery Safety Guidelines.\u003c\/p\u003e\n\n\u003ch3\u003eExplore More From Our Store\u003c\/h3\u003e\n\u003cp\u003eLooking for other DIY and repair tools? Check out these related products:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-percent-better-every-day-motivational-canvas-wall-poster-inspirational-quote\"\u003e\"1% Better Every Day\" Motivational Canvas Poster | Wall Art\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/best-seat-in-the-house-retro-quote-canvas-wall-art-print\"\u003e\"Best Seat In The House\" Retro Quote Canvas Wall Art Print\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Which Makita battery models is this 18V PCB protection board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This replacement PCB board is designed to be compatible with Makita 18V lithium-ion battery packs including the BL1830, BL1840, BL1850, and BL1860 models. Always verify your battery model number before purchasing to ensure a proper fit.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I install this battery PCB board myself as a DIY repair?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This board is designed for DIY battery repair. However, working with lithium-ion batteries requires basic electronics knowledge and caution. Ensure the battery cells are fully discharged, use appropriate soldering tools, and follow lithium-ion battery safety precautions throughout the process.\u003c\/p\u003e\n\u003ch4\u003eQ: What does the PCB protection board actually protect against?\u003c\/h4\u003e\n\u003cp\u003eA: The PCB protection board safeguards your battery from overcharging (cuts off at 4.25V per cell), over-discharging (protects below 14V total), excessive charging current (max 12A), and dangerous overheating (activates protection at 100°C). This extends battery life and prevents potential safety hazards.\u003c\/p\u003e\n\u003ch4\u003eQ: Will this PCB board work if my battery cells are also damaged?\u003c\/h4\u003e\n\u003cp\u003eA: This board replaces only the protection circuit — not the battery cells themselves. If your battery cells are degraded or dead, replacing the PCB board alone will not restore full battery performance. This repair is most effective when your cells are still in good condition but the protection circuit has failed.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which Makita battery models is this 18V PCB protection board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This replacement PCB board is designed to be compatible with Makita 18V lithium-ion battery packs including the BL1830, BL1840, BL1850, and BL1860 models. 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