{"product_id":"fma-6s-21-6v-22-2v-pcm-bms-li-ion-li-po-battery-management-system-protect-pcba","title":"FMA 6S 21.6V 22.2V Li-ion Battery Protection Board BMS PCM 5A","description":"\u003ch2\u003e\u003cstrong\u003eFMA 6S 21.6V Li-ion Battery Protection Circuit Board (BMS\/PCM)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eProfessional-grade Battery Management System (BMS) protection circuit board designed for 6S lithium-ion and lithium-polymer battery packs. Provides comprehensive protection against overcharge, over-discharge, overcurrent, and short circuit conditions to ensure safe and reliable battery operation for various applications.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e6S Configuration:\u003c\/strong\u003e Designed for 6-cell series lithium battery packs (21.6V nominal, 22.2V typical)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Protection:\u003c\/strong\u003e Overcharge, over-discharge, overcurrent, and short circuit protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5A Continuous Current:\u003c\/strong\u003e Supports up to 5A continuous discharge current\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Space-efficient PCB layout ideal for smaller battery packs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Reliability:\u003c\/strong\u003e Quality components ensure long-term stable operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e Suitable for portable devices, small power tools, and custom battery projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1× FMA 6S BMS Protection Circuit Board\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e6S (6 cells in series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e21.6V (3.6V per cell)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eTypical Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e22.2V (3.7V per cell)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eFull Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e25.2V (4.2V per cell)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMax Continuous Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eOvercharge Protection Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e4.25V ± 0.05V per cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eOver-discharge Protection Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e2.5V ± 0.1V per cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eBattery Chemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eLi-ion \/ LiPo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eApproximately 100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eBrand New\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0732\/9133\/3821\/files\/FPML06S01.png?v=1772591008\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0732\/9133\/3821\/files\/FPML06S02.png?v=1772591008\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6S lithium-ion battery pack protection\u003c\/li\u003e\n\u003cli\u003ePortable power banks and battery packs\u003c\/li\u003e\n\u003cli\u003eSmall power tool battery assemblies\u003c\/li\u003e\n\u003cli\u003eLED lighting systems\u003c\/li\u003e\n\u003cli\u003ePortable electronic devices\u003c\/li\u003e\n\u003cli\u003eRC hobby applications\u003c\/li\u003e\n\u003cli\u003eMedical equipment battery packs\u003c\/li\u003e\n\u003cli\u003eCustom battery pack projects\u003c\/li\u003e\n\u003cli\u003eDIY battery rebuilds and upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eProtection Functions\u003c\/strong\u003e\u003c\/h3\u003e\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\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\u003cp\u003e\u003cstrong\u003eOvercurrent Protection:\u003c\/strong\u003e Monitors discharge current and disconnects the load if current exceeds safe limits (5A continuous), protecting both the battery and connected devices.\u003c\/p\u003e\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\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Wiring\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBefore Installation:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEnsure all battery cells are balanced and at similar voltage levels (within 0.1V)\u003c\/li\u003e\n\u003cli\u003eVerify that the battery pack voltage matches the BMS specification (6S configuration)\u003c\/li\u003e\n\u003cli\u003ePrepare necessary tools: soldering iron, wire strippers, multimeter, heat-shrink tubing\u003c\/li\u003e\n\u003cli\u003eWork in a clean, well-ventilated area with proper ESD protection\u003c\/li\u003e\n\u003cli\u003eWear safety glasses and insulated gloves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWiring Guidelines:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConnect balance wires to each cell in the correct sequence (B0 to B6, refer to product images)\u003c\/li\u003e\n\u003cli\u003eUse appropriate wire gauge for main power connections (minimum 18AWG for 5A)\u003c\/li\u003e\n\u003cli\u003eDouble-check polarity before making final connections (positive to P+, negative to P-)\u003c\/li\u003e\n\u003cli\u003eEnsure all solder joints are clean and secure with good electrical contact\u003c\/li\u003e\n\u003cli\u003eInsulate all connections with heat-shrink tubing to prevent shorts\u003c\/li\u003e\n\u003cli\u003eTest voltage at each balance point with a multimeter before powering on\u003c\/li\u003e\n\u003cli\u003eVerify total pack voltage is within expected range (21.6V-25.2V)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRequired Skills:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUnderstanding of lithium battery chemistry and safety\u003c\/li\u003e\n\u003cli\u003eProficiency in soldering and electrical connections\u003c\/li\u003e\n\u003cli\u003eAbility to read wiring diagrams and follow technical specifications\u003c\/li\u003e\n\u003cli\u003eKnowledge of proper battery handling and safety protocols\u003c\/li\u003e\n\u003cli\u003eExperience with multimeter usage and voltage testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWho Should NOT Attempt Installation:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIndividuals without electrical or electronics experience\u003c\/li\u003e\n\u003cli\u003eThose unfamiliar with lithium battery safety requirements\u003c\/li\u003e\n\u003cli\u003eAnyone without proper tools or workspace\u003c\/li\u003e\n\u003cli\u003eMinors without qualified adult supervision\u003c\/li\u003e\n\u003cli\u003eIf unsure about any aspect of installation, consult a professional technician\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eImportant Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e This BMS is rated for 5A continuous discharge current. Ensure your application does not exceed this current limit. For higher current applications, consider our 7S, 10S, or 12S BMS boards with higher current ratings.\u003c\/p\u003e\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, please refer to the product gallery images and contact us with your requirements before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This BMS is designed for 6S lithium-ion or lithium-polymer battery packs with nominal voltage of 21.6V\/22.2V. Ensure your battery configuration matches before purchase. Using this BMS with incorrect battery configurations can result in improper protection and potential safety hazards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTesting:\u003c\/strong\u003e After installation, perform thorough testing including voltage checks at all balance points, charge\/discharge cycles, and protection function verification before putting the battery pack into regular use.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhy Choose FMA BMS Products?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFMA specializes in high-quality battery management solutions for lithium-ion and lithium-polymer 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.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCustom BMS Solutions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eNeed a different cell configuration, current rating, or custom features? 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\u003ch3\u003e\u003cstrong\u003eSafety Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCharging:\u003c\/strong\u003e Use only chargers designed for 6S lithium battery packs with proper voltage (25.2V) and current specifications. Never exceed the maximum charging voltage.\u003c\/p\u003e\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\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\u003cp\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e Operate within recommended temperature range. Avoid extreme temperatures during charging and discharging.\u003c\/p\u003e\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\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\u003ch3\u003e\u003cstrong\u003eShipping \u0026amp; Transportation Notice\u003c\/strong\u003e\u003c\/h3\u003e\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\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\u003cp\u003e\u003cstrong\u003ePackaging Compliance:\u003c\/strong\u003e All shipments comply with applicable packaging requirements for electronic components.\u003c\/p\u003e\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\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":"22.2V 5A 90x50mm","offer_id":46447913271485,"sku":"FPML06S050W001","price":16.63,"currency_code":"USD","in_stock":true},{"title":"22.2V 10A 16x100mm","offer_id":46447913304253,"sku":"FPML06S100W002","price":14.14,"currency_code":"USD","in_stock":true},{"title":"22.2V 12A 64x50mm","offer_id":46447913337021,"sku":"FPML06S120F520","price":19.15,"currency_code":"USD","in_stock":true},{"title":"22.2V 12A 85x50mm","offer_id":46447913369789,"sku":"FPML06S120W003","price":17.92,"currency_code":"USD","in_stock":true},{"title":"22.2V 21A 60x97mm","offer_id":46447913402557,"sku":"FPML06S210W005","price":20.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/9133\/3821\/files\/10_bac3bea4-e2bb-49a2-9018-2aca53b79607.jpg?v=1772513045","url":"https:\/\/fmabattery.com\/products\/fma-6s-21-6v-22-2v-pcm-bms-li-ion-li-po-battery-management-system-protect-pcba","provider":"fmabattery","version":"1.0","type":"link"}