{"product_id":"1s-3-7v-li-ion-bms-battery-protection-board-nickel-strip-10-20pcs","title":"1S 3.7V Li-Ion BMS Protection Board + Nickel Strip (10\/20pcs)","description":"\n\u003ch2\u003e1S 3.7V Li-Ion BMS Battery Protection Board with Nickel Welding Strip\u003c\/h2\u003e\n\u003cp\u003eKeep your lithium battery packs safe and running at peak performance with this compact \u003cstrong\u003e1S 3.7V Battery Management System (BMS) Protection Board\u003c\/strong\u003e. Engineered with high-precision imported components and premium MOSFETs, each board delivers reliable multi-layered protection in a space-saving 18 × 3.6 mm form factor — ideal for DIY electronics, RC projects, portable power banks, and custom battery packs.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4-in-1 Protection:\u003c\/strong\u003e Overcharge, over-discharge, short circuit, and overcurrent protection in one compact board\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Components:\u003c\/strong\u003e Japanese precision protection IC paired with VISHAY, AOS, and IR high-quality MOSFETs for stable, dependable performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFR-4 Low Temperature Coefficient PCB:\u003c\/strong\u003e Carefully designed for minimal thermal drift and long-lasting durability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Size:\u003c\/strong\u003e 18 × 3.6 mm — fits easily into tight battery pack assemblies\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Quiescent Current:\u003c\/strong\u003e Minimal power draw to maximise your battery runtime\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNickel Strip Included:\u003c\/strong\u003e Each board comes with a soldering strip for fast, secure cell connection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Quantities:\u003c\/strong\u003e Available in packs of 10, 20, 50, or 100 — perfect for prototyping or production runs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCell Configuration:\u003c\/strong\u003e 1S (single cell)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Voltage:\u003c\/strong\u003e 3.7V Li-Ion\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 18 × 3.6 mm (approx.)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercharge Release Voltage:\u003c\/strong\u003e 4.23 ± 0.05V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercharge Detection Voltage:\u003c\/strong\u003e 4.25 ± 0.05V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Discharge Detection Voltage:\u003c\/strong\u003e 2.54 ± 0.1V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercurrent Detection Current:\u003c\/strong\u003e 1–3A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContinuous Current:\u003c\/strong\u003e 2A | \u003cstrong\u003ePeak Current:\u003c\/strong\u003e 3A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e FR-4 PCB with plastic housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWiring \/ Connection Guide\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB+\u003c\/strong\u003e → Connect to Battery Positive (+)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB−\u003c\/strong\u003e → Connect to Battery Negative (−)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP+\u003c\/strong\u003e → Battery Output Positive (+)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP−\u003c\/strong\u003e → Battery Output \/ Input Negative (−)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOption 1:\u003c\/strong\u003e 10× Protection Boards with Nickel Soldering Strip\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOption 2:\u003c\/strong\u003e 20× Protection Boards with Nickel Soldering Strip\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOption 3:\u003c\/strong\u003e 50× Protection Boards with Nickel Soldering Strip\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOption 4:\u003c\/strong\u003e 100× Protection Boards with Nickel Soldering Strip\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Actual color may vary slightly from images due to monitor brightness and lighting conditions. Please allow minor measurement tolerances (±1–2 mm).\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-channel-relay-module-dc-3-3v-24v-optocoupler-arduino\"\u003e1-Channel Relay Module DC 3.3V–24V Optocoupler for Arduino\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/0-25mm-1000-turn-precision-copper-inductor-coil-diy-electronics\"\u003e0.25mm 1000-Turn Precision Copper Inductor Coil for DIY Circuits\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor further reading on lithium battery safety standards and best practices, visit the U.S. Consumer Product Safety Commission – Battery Safety.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Battery_management_system\" target=\"_blank\" rel=\"noopener\"\u003eBattery management system\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does a BMS protection board do for a 1S 3.7V Li-Ion battery?\u003c\/h4\u003e\n\u003cp\u003eA: A Battery Management System (BMS) protection board monitors and protects your lithium-ion cell from overcharging (above 4.25V), over-discharging (below 2.54V), short circuits, and overcurrent events. This ensures safe operation and extends the working life of your 3.7V Li-Ion battery pack.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use this BMS board with different lithium battery shapes and capacities?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This 1S BMS protection board is compatible with a variety of 3.7V Li-Ion cell shapes and capacities (cylindrical, pouch, etc.), making it suitable for power banks, RC devices, DIY portable electronics, and other single-cell lithium battery applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Is nickel strip included and how is it used?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — each protection board comes with a nickel soldering strip. The strip is spot-welded or soldered between the BMS board and the battery terminals to create a secure, low-resistance electrical connection without directly soldering heat-sensitive battery cells.\u003c\/p\u003e\n\u003ch4\u003eQ: What quantities are available for bulk or project use?\u003c\/h4\u003e\n\u003cp\u003eA: This listing is available in packs of 10, 20, 50, or 100 boards with nickel strips — ideal whether you're prototyping a single project or running a larger production batch.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does a BMS protection board do for a 1S 3.7V Li-Ion battery?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A Battery Management System (BMS) protection board monitors and protects your lithium-ion cell from overcharging (above 4.25V), over-discharging (below 2.54V), short circuits, and overcurrent events. 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