{"product_id":"3-7v-lithium-battery-protection-board","title":"3.7V Lithium Battery Protection Board (3 MOS) 2-3A Capacity","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eEnhance your battery safety with the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3.7V Lithium Battery Protection Board (3 MOS)\u003c\/strong\u003e. Designed for 3.7V lithium batteries, this board features a robust 2-3A discharge capacity and advanced protection with three MOS transistors. With a static current of ≤3µA and overcharge\/discharge protection at 4.25V±0.05V, it’s perfect for DIY projects or device upgrades. This compact board supports a maximum continuous discharge current of 2-3A.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNominal voltage: 3.7V\u003c\/li\u003e\n\u003cli\u003eOvercharge protection: 4.25V±0.05V\u003c\/li\u003e\n\u003cli\u003eOver-discharge protection: 2.3-2.35V\u003c\/li\u003e\n\u003cli\u003eMaximum continuous discharge current: 2-3A\u003c\/li\u003e\n\u003cli\u003eStatic current: ≤3µA\u003c\/li\u003e\n\u003cli\u003eOperating temperature: -40°C to +85°C\u003c\/li\u003e\n\u003cli\u003eCompact design with nickel strip for easy installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWiring Instructions\u003c\/h3\u003e\n\u003cp\u003eThis protection board is designed for 1S lithium battery configurations. Follow the wiring instructions below for safe and optimal performance:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eB+ (Positive Input, Red Line)\u003c\/strong\u003e: Connect to the battery's positive terminal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eB- (Negative Input, Black Line)\u003c\/strong\u003e: Connect to the battery's negative terminal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP+ (Positive Output, Red Line)\u003c\/strong\u003e: Connect to the load or charger's positive terminal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP- (Negative Output, Black Line)\u003c\/strong\u003e: Connect to the load or charger's negative terminal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWiring Steps:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the battery voltage is within the 3.7V range (supports 3.6V\/3.7V lithium batteries).\u003c\/li\u003e\n\u003cli\u003eUse the nickel strip to weld B+ and B- to the battery's positive and negative terminals, ensuring a secure connection.\u003c\/li\u003e\n\u003cli\u003eConnect P+ and P- to the load or charger, matching the positive and negative terminals.\u003c\/li\u003e\n\u003cli\u003eCheck all connections to avoid short circuits, then power on for testing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStrictly follow the wiring instructions to avoid short circuits or incorrect polarity, which may damage the board or battery. \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-specifications\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3.7V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatic Current:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e≤3µA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Continuous Discharge Current:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2-3A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOvercharge Protection Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4.25V±0.05V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver-discharge Protection Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2.3-2.35V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Resistance (MOSFET):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e≤60mΩ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e-40°C to +85°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Sun Cheong Computer Company Limited","offers":[{"title":"Default Title","offer_id":45519170240663,"sku":"","price":34.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0440\/4022\/4919\/files\/3.7V_lithium_battery_protection_board_Main.jpg?v=1754313776","url":"https:\/\/scccltd.com\/en-tw\/products\/3-7v-lithium-battery-protection-board","provider":"Sun Cheong Computer Company Limited","version":"1.0","type":"link"}