{"product_id":"type-c-2s-3s-4s-li-ion-boost-battery-charger-module","title":"Type-C 2S 3S 4S Boost Battery Charger Module – 8.4V\/12.6V\/16.8V 18650 Charging Board","description":"\u003ch2\u003e📋 Overview\u003c\/h2\u003e\n\u003cp\u003eThis compact USB Type-C charging module steps up a standard 5V USB power source to properly charge multi-cell 18650 lithium-ion battery packs. Choose the variant that matches your battery configuration — 2-Cell (2S) for 8.4V packs, 3-Cell (3S) for 12.6V packs, or 4-Cell (4S) for 16.8V packs — and this board will safely boost-convert and charge at up to 2A. It's a simple, drop-in solution for DIY battery packs, portable power projects, and battery pack repairs.\u003c\/p\u003e\n\u003ch2\u003e⭐ Key Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUSB Type-C input — works with any standard 5V phone charger, power bank, or USB power supply\u003c\/li\u003e\n\u003cli\u003eBoost-converts low input voltage up to the correct charging voltage for your battery pack\u003c\/li\u003e\n\u003cli\u003eThree variants available: 2S (8.4V), 3S (12.6V), and 4S (16.8V)\u003c\/li\u003e\n\u003cli\u003e2 Amp charging input current version for faster charging\u003c\/li\u003e\n\u003cli\u003eBuilt-in battery overvoltage protection\u003c\/li\u003e\n\u003cli\u003eProtection against battery voltage being lower than input, and against short circuit\u003c\/li\u003e\n\u003cli\u003eGood adaptability to input power sources with limited driving capability\u003c\/li\u003e\n\u003cli\u003eDual LED status indicators — \"CR\" shows active charging, \"OK\" shows fully charged \/ constant voltage mode\u003c\/li\u003e\n\u003cli\u003eUltra-compact size, easy to integrate into custom battery pack enclosures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eFactory-Configured — Not User Adjustable:\u003c\/strong\u003e This module is factory-configured for a specific 18650 cell count (2S, 3S, or 4S) and its matching charging voltage (8.4V, 12.6V, or 16.8V). This setting is fixed at the factory and cannot be changed by the user. Be sure to select the variant that matches your battery pack's series cell count — connecting a pack with a different cell count than the module is configured for can result in incorrect charging voltage and damage to your battery pack.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch2\u003e📦 What's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Type-C Multi-Cell Boost Battery Charger Module (2S, 3S, or 4S — per selected variant)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eBattery cells, wiring, USB-C cable, and power source are not included.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003e📊 Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eVariant\u003c\/th\u003e\n\u003cth\u003eCells Supported\u003c\/th\u003e\n\u003cth\u003eCharging Voltage\u003c\/th\u003e\n\u003cth\u003eCharging Current (2A Input Version)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2S\u003c\/td\u003e\n\u003ctd\u003e2x 18650 in series\u003c\/td\u003e\n\u003ctd\u003e8.4V\u003c\/td\u003e\n\u003ctd\u003e1.1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3S\u003c\/td\u003e\n\u003ctd\u003e3x 18650 in series\u003c\/td\u003e\n\u003ctd\u003e12.6V\u003c\/td\u003e\n\u003ctd\u003e0.74A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4S\u003c\/td\u003e\n\u003ctd\u003e4x 18650 in series\u003c\/td\u003e\n\u003ctd\u003e16.8V\u003c\/td\u003e\n\u003ctd\u003e0.56A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Connector\u003c\/td\u003e\n\u003ctd\u003eUSB Type-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003eDC 3-6V (5V recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Features\u003c\/td\u003e\n\u003ctd\u003eBattery overvoltage protection; protection for battery voltage below input; short-circuit protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indicators\u003c\/td\u003e\n\u003ctd\u003e\"CR\" LED = charging; \"OK\" LED = fully charged \/ constant voltage mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 39 × 18 × 6.3 mm (1.54 x 0.71 x 0.25 inches) L × W × H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 5g (0.2 ounces)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e🔌 Compatible With\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e18650 lithium-ion cells wired in 2S, 3S, or 4S series configurations\u003c\/li\u003e\n\u003cli\u003eStandard USB Type-C 5V chargers, power banks, and USB power supplies\u003c\/li\u003e\n\u003cli\u003eCustom DIY battery packs for flashlights, portable speakers, power tools, and similar projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🎯 Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBuilding and charging custom multi-cell 18650 battery packs\u003c\/li\u003e\n\u003cli\u003ePortable power stations and backup battery builds\u003c\/li\u003e\n\u003cli\u003eRepairing or upgrading multi-cell battery packs in existing devices\u003c\/li\u003e\n\u003cli\u003eElectronics hobbyist and maker battery projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e💡 \u003cstrong\u003eTip:\u003c\/strong\u003e Be sure to select the variant that matches your battery pack's cell count — 2S, 3S, or 4S. Using the wrong variant will result in incorrect charging voltage for your pack. Full wiring and setup instructions are available in our companion User Guide (linked below).\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch2\u003e📄 Documentation \u0026amp; Resources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUser Guide:\u003c\/strong\u003e \u003ca href=\"\/blogs\/learn\/type-c-2s-3s-4s-boost-li-ion-battery-charger-module-wiring-setup-user-guide\" target=\"_blank\" title=\"Type-C 2S\/3S\/4S 18650 Boost Battery Charger Module Wiring \u0026amp; Setup User Guide\" rel=\"noopener\"\u003eType-C 2S\/3S\/4S Boost Battery Charger Module User Guide\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory Guide:\u003c\/strong\u003e \u003ca href=\"\/blogs\/learn\/tagged\/battery-charging-modules\" title=\"All Battery Charging Module User Manuals and Hookup Guides\" rel=\"noopener\" target=\"_blank\"\u003eAll Battery Charging Module Guides\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cem\u003eSold and supported by Envistia Mall. This product ships from our US warehouse. For wiring diagrams, setup steps, and safety notes, please see the linked User Guide above. Envistia Mall is not liable for damage resulting from improper wiring, incorrect variant selection, or use of incompatible battery cells. Always follow proper lithium battery handling and charging safety practices. Specifications are provided by the manufacturer and may vary slightly by production batch.\u003c\/em\u003e\u003ca href=\"\/blogs\/learn\/tagged\/battery-charging-modules\" title=\"All Battery Charging Module User Manuals and Hookup Guides\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Envistia","offers":[{"title":"2S 8.4V","offer_id":48708477845753,"sku":"EM-POWER-0076-2S","price":2.39,"currency_code":"USD","in_stock":true},{"title":"3S 12.6V","offer_id":48708477878521,"sku":"EM-POWER-0076-3S","price":2.89,"currency_code":"USD","in_stock":true},{"title":"4S 16.8V","offer_id":48708477911289,"sku":"EM-POWER-0076-4S","price":4.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1641\/0911\/files\/Type-C-BMS-2S-3S-4S-Charger-3.jpg?v=1784909811","url":"https:\/\/envistiamall.com\/products\/type-c-2s-3s-4s-li-ion-boost-battery-charger-module","provider":"Envistia Mall","version":"1.0","type":"link"}