{"product_id":"4s-40a-balanced-bms-battery-protection-board-for-18650-li-ion-batteries-16-8v","title":"4S 40A Balanced BMS Battery Protection Board for 18650 Li-ion Batteries – 16.8V","description":"\u003ch2\u003e\u003cspan\u003e4S 40A Balanced BMS Battery Protection Board – 16.8V\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eBuild a compatible four-series lithium-ion battery pack with this \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e4S 40A Balanced Battery Management System (BMS)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Designed for standard lithium-ion cells, this protection board is advertised with a 40A continuous discharge rating and a cell-balancing function.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e4S battery configuration:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e For four lithium-ion cell groups connected in series.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e16.8V full-charge voltage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e For standard Li-ion cells rated at 4.2V per cell group.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAdvertised 40A continuous discharge current:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Actual safe current depends on cooling, wiring, connectors and battery-cell capability.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eBalanced version:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Designed to help balance cell-group voltages during charging.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAdvertised protection functions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Listings describe overcharge, over-discharge, overcurrent and short-circuit protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCompact PCB:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Reported dimensions for the balanced version are approximately 46 × 60 × 3.4 mm; verify before installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/3623\/2249\/files\/01_Features_Overview.jpg?v=1793024781\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eProduct type: 4S balanced BMS protection board\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBattery chemistry: Standard lithium-ion\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eConfiguration: 4S\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eNominal voltage: 14.4V or 14.8V, depending on the cells' nominal rating\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFull-charge voltage: 16.8V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAdvertised continuous discharge current: Up to 40A\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAdvertised continuous charge current: Up to 20A\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReported balancing current: Approximately 100mA; supplier confirmation recommended\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReported dimensions: Approximately 46 × 60 × 3.4 mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePackage: 1 × 4S 40A balanced BMS board\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003ePotential Applications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eDepending on the battery cells and load requirements, this board may be suitable for selected battery-powered tools, LED systems, sprayers and DIY battery-pack projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0965\/3623\/2249\/files\/03_Connection_Concept_NOT_VERIFIED_PINOUT.jpg?v=1793024781\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eInstallation and Safety\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eUse only with a compatible 4S standard Li-ion battery pack and a suitable 16.8V CC\/CV charger. This board is a protection circuit, not a standalone battery charger.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eConfirm the terminal labels and wiring sequence against the instructions for your exact board. Use compatible cells with similar condition and voltage, appropriate wiring, and adequate heat dissipation. Never assume the advertised 40A rating is suitable for every battery pack or installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Electronics Hub","offers":[{"title":"Default Title","offer_id":67844272488761,"sku":null,"price":295.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/3623\/2249\/files\/01_Main_Product_Image.jpg?v=1793024208","url":"https:\/\/electronicshub.pk\/products\/4s-40a-balanced-bms-battery-protection-board-for-18650-li-ion-batteries-16-8v","provider":"Electronics Hub","version":"1.0","type":"link"}