{"product_id":"5-pack-2s-7-4v-bms-18650-li-ion-battery-protection-board","title":"5-Pack 2S 7.4V BMS 18650 Li-ion Battery Protection Board","description":"\n\u003ch2\u003e5-Pack 2S 7.4V BMS Lithium Battery Protection Boards\u003c\/h2\u003e\n\u003cp\u003eKeep your DIY battery packs safe and performing at their best with this \u003cstrong\u003e5-pack of 2S 7.4V BMS lithium battery protection boards\u003c\/strong\u003e. Built with high-quality MOS tubes and dot nickel strips, these compact modules deliver four-in-one safety protection for 18650 Li-ion and lithium LiPo battery cells — perfect for hobbyists, makers, and electronics enthusiasts.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e 2S (7.4V nominal)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContinuous Discharge Current:\u003c\/strong\u003e 2A \/ 3A \/ 4.5A \/ 6A \/ 7.5A \/ 9A (optional)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstantaneous Discharge Current:\u003c\/strong\u003e ≤3µA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCharging Voltage:\u003c\/strong\u003e 3.7V per cell\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCharging Current:\u003c\/strong\u003e 2–9A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0–50°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-quality MOS Tube \u0026amp; Dot Nickel Strips\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Cells:\u003c\/strong\u003e 18650 Li-ion \/ Lithium LiPo\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 5 boards per pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose These BMS Protection Boards?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFour-in-One Safety Protection:\u003c\/strong\u003e Guards against overcharge, over-discharge, overcurrent, and short circuit — all in one compact module.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Current Ratings:\u003c\/strong\u003e Choose from 2A, 3A, 4.5A, 6A, 7.5A, or 9A to suit your specific project requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Construction:\u003c\/strong\u003e High-grade MOS tubes and dot nickel strips ensure stable, reliable performance and a long service life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature Range:\u003c\/strong\u003e Functions across 0–50°C, making it adaptable to a variety of working environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Easy to Integrate:\u003c\/strong\u003e Slim profile fits neatly inside battery enclosures and DIY electronic builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReady to Use:\u003c\/strong\u003e No complex setup required — simply wire into your battery pack and you're protected.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\n\u003cp\u003eThese BMS boards are designed for a wide range of \u003cstrong\u003eDIY electronics and battery-powered projects\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCustom 18650 battery pack assemblies\u003c\/li\u003e\n  \u003cli\u003eRC vehicles and robotics\u003c\/li\u003e\n  \u003cli\u003ePortable power banks\u003c\/li\u003e\n  \u003cli\u003eLED lighting systems\u003c\/li\u003e\n  \u003cli\u003eDIY power tools and home automation projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e5× 2S 7.4V BMS Lithium Battery Protection Boards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/t2-pure-bare-copper-wire-round-solid-uncoated-0-1-2mm-10m\"\u003eT2 Pure Bare Copper Wire 0.1–2mm Round Solid Uncoated 10M\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/nitrile-work-gloves-anti-slip-full-finger-5-pair\"\u003e5-Pair Nitrile Work Gloves – Anti-Slip Full Finger Safety\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-pack-65mm-oscillating-multi-tool-saw-blades-high-carbon-steel\"\u003e10-Pack 65mm Oscillating Multi-Tool Saw Blades | Carbon Steel\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: What does a 2S BMS lithium battery protection board do?\u003c\/h4\u003e\n\u003cp\u003eA: A 2S BMS (Battery Management System) protection board monitors and safeguards a 2-cell series lithium battery pack (7.4V nominal). It actively protects against overcharge, over-discharge, overcurrent, and short-circuit conditions, helping to extend battery life and prevent damage to your cells or connected devices.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Which battery cells are compatible with these BMS boards?\u003c\/h4\u003e\n\u003cp\u003eA: These boards are compatible with standard 18650 Li-ion and lithium LiPo battery cells connected in a 2S (series) configuration. They are ideal for DIY battery packs used in portable electronics, RC projects, power banks, and more.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I choose the discharge current rating?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! These BMS boards are available in multiple continuous discharge current options: 2A, 3A, 4.5A, 6A, 7.5A, and 9A. Select the rating that best matches your project's power requirements at the time of purchase.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these boards easy to install for DIY projects?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The boards feature a compact, ready-to-use design that can be quickly soldered or connected into your battery pack wiring. Their small form factor makes integration into battery enclosures and electronics housings straightforward, even for beginners.\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 does a 2S BMS lithium battery protection board do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A 2S BMS (Battery Management System) protection board monitors and safeguards a 2-cell series lithium battery pack (7.4V nominal). 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