{"product_id":"14-4v-bl1430-18v-bl1830-makita-drill-li-ion-battery-management-system-pcm-bms","title":"FMA 4S\/5S BMS for Makita 14.4V 18V Li-ion Battery BL1430 BL1830 PCM","description":"\u003ch2\u003e\u003cstrong\u003eFMA BMS Protection Board for Makita Power Tool Batteries\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cp\u003eProfessional-grade Battery Management System (BMS) protection circuit board specifically designed for Makita power tool battery packs. Supports both 4S (14.4V) and 5S (18V) configurations, making it ideal for rebuilding or replacing Makita BL1430, BL1830, BL1860 battery packs and compatible models.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eDual Configuration Support:\u003c\/strong\u003e Compatible with both 4S (14.4V) and 5S (18V) Makita battery packs\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eMakita Compatible:\u003c\/strong\u003e Designed specifically for Makita power tool battery systems\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eMulti-Protection:\u003c\/strong\u003e Overcharge, over-discharge, overcurrent, and short circuit protection\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works with BL1430, BL1830, BL1860, and compatible Makita battery models\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eHigh Reliability:\u003c\/strong\u003e Quality components ensure long-term stable operation\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eProfessional Grade:\u003c\/strong\u003e Suitable for battery rebuilds and replacements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e1× FMA BMS Protection Circuit Board (Makita Compatible)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\t\u003ctbody\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e4S or 5S (4-5 cells in series)\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003e4S Nominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e14.4V (3.6V per cell)\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003e5S Nominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e18V \/ 18.5V (3.6-3.7V per cell)\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003e4S Full Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e16.8V (4.2V per cell)\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003e5S Full Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e21V (4.2V per cell)\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eOvercharge Protection Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e4.25V ± 0.05V per cell\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eOver-discharge Protection Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e2.5V ± 0.1V per cell\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eBattery Chemistry\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eLi-ion\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCompatible Models (4S 14.4V)\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eBL1430, 194066-1, 194065-3, BDA340, BDF440, BFR540, BHP440, BJV140, BTP130\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCompatible Models (5S 18V)\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eBL1830, BL1860, and compatible 18V Makita batteries\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eApproximately 100g\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eBrand New\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatible Makita Battery Models\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003e14.4V (4S) Models:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\t\u003cli\u003eBL1430 (3.0Ah)\u003c\/li\u003e\n\t\u003cli\u003e194066-1\u003c\/li\u003e\n\t\u003cli\u003e194065-3\u003c\/li\u003e\n\t\u003cli\u003eCompatible with: BDA340, BDF440, BFR540, BHP440, BJV140, BTP130 power tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003e18V (5S) Models:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\t\u003cli\u003eBL1830 (3.0Ah)\u003c\/li\u003e\n\t\u003cli\u003eBL1860 (6.0Ah)\u003c\/li\u003e\n\t\u003cli\u003eOther compatible 18V Makita lithium-ion batteries\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eMakita 14.4V power tool battery pack rebuilds\u003c\/li\u003e\n\t\u003cli\u003eMakita 18V power tool battery pack rebuilds\u003c\/li\u003e\n\t\u003cli\u003eBL1430 battery replacement and repair\u003c\/li\u003e\n\t\u003cli\u003eBL1830\/BL1860 battery replacement and repair\u003c\/li\u003e\n\t\u003cli\u003eCordless drill battery assemblies\u003c\/li\u003e\n\t\u003cli\u003eImpact driver battery packs\u003c\/li\u003e\n\t\u003cli\u003eCircular saw battery systems\u003c\/li\u003e\n\t\u003cli\u003eCustom Makita-compatible battery projects\u003c\/li\u003e\n\t\u003cli\u003eDIY battery rebuilds and upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eProtection Functions\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eOvercharge Protection:\u003c\/strong\u003e Automatically disconnects charging when any cell reaches the overcharge protection voltage (4.25V ± 0.05V), preventing battery damage from excessive voltage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOver-discharge Protection:\u003c\/strong\u003e Cuts off discharge when any cell voltage drops to the protection threshold (2.5V ± 0.1V), preventing deep discharge that can permanently damage lithium cells.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOvercurrent Protection:\u003c\/strong\u003e Monitors discharge current and disconnects the load if current exceeds safe limits, protecting both the battery and connected power tools.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eShort Circuit Protection:\u003c\/strong\u003e Instantly disconnects the battery in the event of a short circuit, preventing fire hazards and equipment damage.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Wiring\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eBefore Installation:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eDetermine whether you are rebuilding a 4S (14.4V) or 5S (18V) battery pack\u003c\/li\u003e\n\t\u003cli\u003eEnsure all battery cells are balanced and at similar voltage levels (within 0.1V)\u003c\/li\u003e\n\t\u003cli\u003eVerify that the battery pack voltage matches your chosen configuration\u003c\/li\u003e\n\t\u003cli\u003eHave the original Makita battery case ready for reassembly\u003c\/li\u003e\n\t\u003cli\u003ePrepare necessary tools: soldering iron, wire strippers, multimeter, heat-shrink tubing\u003c\/li\u003e\n\t\u003cli\u003eWork in a clean, well-ventilated area with proper ESD protection\u003c\/li\u003e\n\t\u003cli\u003eWear safety glasses and insulated gloves\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWiring Guidelines:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eFor 4S configuration: Connect balance wires to B0 through B4 (4 cells)\u003c\/li\u003e\n\t\u003cli\u003eFor 5S configuration: Connect balance wires to B0 through B5 (5 cells)\u003c\/li\u003e\n\t\u003cli\u003eUse appropriate wire gauge for main power connections\u003c\/li\u003e\n\t\u003cli\u003eDouble-check polarity before making final connections\u003c\/li\u003e\n\t\u003cli\u003eEnsure all solder joints are clean and secure with good electrical contact\u003c\/li\u003e\n\t\u003cli\u003eInsulate all connections with heat-shrink tubing to prevent shorts\u003c\/li\u003e\n\t\u003cli\u003eTest voltage at each balance point with a multimeter before powering on\u003c\/li\u003e\n\t\u003cli\u003eVerify total pack voltage is within expected range (14.4V-16.8V for 4S, 18V-21V for 5S)\u003c\/li\u003e\n\t\u003cli\u003eEnsure proper fit within the original Makita battery case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eRequired Skills:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eUnderstanding of lithium battery chemistry and safety\u003c\/li\u003e\n\t\u003cli\u003eProficiency in soldering and electrical connections\u003c\/li\u003e\n\t\u003cli\u003eAbility to disassemble and reassemble Makita battery cases\u003c\/li\u003e\n\t\u003cli\u003eKnowledge of proper battery handling and safety protocols\u003c\/li\u003e\n\t\u003cli\u003eExperience with multimeter usage and voltage testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWho Should NOT Attempt Installation:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eIndividuals without electrical or electronics experience\u003c\/li\u003e\n\t\u003cli\u003eThose unfamiliar with lithium battery safety requirements\u003c\/li\u003e\n\t\u003cli\u003eAnyone without proper tools or workspace\u003c\/li\u003e\n\t\u003cli\u003eMinors without qualified adult supervision\u003c\/li\u003e\n\t\u003cli\u003eIf unsure about any aspect of installation, consult a professional technician\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eImportant Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eConfiguration Selection:\u003c\/strong\u003e This BMS board supports both 4S (14.4V) and 5S (18V) configurations. Make sure to wire the correct number of cells for your specific Makita battery model. Using the wrong configuration can result in improper protection and potential safety hazards.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMakita Compatibility:\u003c\/strong\u003e This BMS is designed to work with Makita power tool battery systems. Ensure your battery case and tool are compatible before purchase.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eConnector Customization:\u003c\/strong\u003e We ship the standard configuration as shown in the main product images. If you require specific connectors or custom wire arrangements for your Makita battery rebuild, please refer to the product gallery images and contact us with your requirements before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTesting:\u003c\/strong\u003e After installation, perform thorough testing including voltage checks at all balance points, charge\/discharge cycles with a Makita charger, and protection function verification before putting the battery pack into regular use with power tools.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWhy Choose FMA BMS Products?\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eFMA specializes in high-quality battery management solutions for power tool battery systems. Our BMS boards are manufactured using premium components and undergo rigorous quality control testing to ensure reliable protection and long service life. Each board is inspected and tested before shipment to guarantee it meets our strict quality standards. The dual 4S\/5S configuration support provides flexibility for various Makita battery rebuild projects.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCustom BMS Solutions\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eNeed a different cell configuration, current rating, or custom features for your power tool battery project? We offer custom BMS design and manufacturing services. Contact us with your specifications including cell count, voltage requirements, current ratings, and any special features you need, and we'll create a tailored solution for your application.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eSafety Information\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eCharging:\u003c\/strong\u003e Use only Makita-compatible chargers designed for your specific battery voltage (14.4V or 18V) with proper voltage and current specifications. Never exceed the maximum charging voltage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStorage:\u003c\/strong\u003e Store in a cool, dry place away from direct sunlight, heat sources, and flammable materials. Keep out of reach of children.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOperation:\u003c\/strong\u003e Do not bypass or disable protection functions. Do not expose to water, moisture, or conductive materials that could cause short circuits.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e Operate within recommended temperature range. Avoid extreme temperatures during charging and discharging.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDisposal:\u003c\/strong\u003e Dispose of according to local regulations for electronic waste. Do not incinerate or dispose of in regular trash.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInspection:\u003c\/strong\u003e Regularly inspect for signs of damage, overheating, or component failure. Discontinue use immediately if any abnormalities are detected.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eShipping \u0026amp; Transportation Notice\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eHazardous Material:\u003c\/strong\u003e This product is designed for use with lithium batteries and may be subject to shipping restrictions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir Transport Restrictions:\u003c\/strong\u003e Due to international air transport regulations, shipments may be subject to additional restrictions and longer transit times.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePackaging Compliance:\u003c\/strong\u003e All shipments comply with applicable packaging requirements for electronic components.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDelivery Time:\u003c\/strong\u003e Electronic component parcels may experience extended delivery times due to customs inspections and carrier handling procedures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDocumentation:\u003c\/strong\u003e Proper documentation accompanies all shipments to ensure compliance with international shipping regulations.\u003c\/p\u003e","brand":"fmabattery","offers":[{"title":"14.4V BL1430","offer_id":46447912779965,"sku":"FPML04S000TMAK","price":13.29,"currency_code":"USD","in_stock":true},{"title":"18V BL1830","offer_id":46447912812733,"sku":"FPML05S000TMAK","price":13.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/9133\/3821\/files\/10_4119dea4-5a0f-40db-ac27-41fcc6245e4e.jpg?v=1772513034","url":"https:\/\/fmabattery.com\/products\/14-4v-bl1430-18v-bl1830-makita-drill-li-ion-battery-management-system-pcm-bms","provider":"fmabattery","version":"1.0","type":"link"}