{"product_id":"heavy-duty-4s-lithium-ion-battery-balance-board-fo","title":"Heavy Duty 4S Lithium Ion Battery Balance Board For 18650 Cells Boasts Top Shelf Protection Circuitry With Tough Braided Wires And A 30 Amp PCM Module For Power Bank Builds That Always Nail The Safety Specs Daily Reliable","description":"\u003cdiv\u003e30A 4S 16.8V Li-ion BMS Balance Board for 18650 Cells\u003cbr\u003e\n✔️ 4S 16.8V 30A PCM Protection Circuit w Braided Wires for 18650 Build \u003cp\u003eThis 30A 4S lithium battery management system handles up to 16.8V for four-cell packs. Builders use this protection circuit module for 18650 power banks, e-bike batteries, and custom high-drain projects. The integrated balance circuit keeps each cell matched while the PCM guards against overcharge, over-discharge, and short circuits during daily operation.\u003c\/p\u003e ✅ 4S configuration supports 4-series 18650 lithium-ion cells\u003cbr\u003e\n✅ Rated for 30A continuous current and 16.8V maximum voltage\u003cbr\u003e\n✅ Built-in balance circuit equalizes cell voltage for longer pack life\u003cbr\u003e\n✅ Includes thick braided wires for reliable power connections\u003cbr\u003e\n✅ PCM protects against overcurrent, short circuit, and thermal faults\u003cbr\u003e\n✅ Ideal for DIY power banks, tools, and motorized devices\u003cbr\u003e \u003cp\u003e💡 How does a 4S battery protection board prevent single-cell failure in lithium packs?\u003c\/p\u003e\n\u003cp\u003eA steady BMS kicks bad patterns out before your pack goes south.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e* Watching voltage drops stops weak cells from tanking the load down, saving your build from fried bits.\u003c\/li\u003e\n\u003cli\u003e* Fair split sends juice to every 18650 so none gets left holding the bag, pulling higher efficiency and keeping vibes stable.\u003c\/li\u003e\n\u003cli\u003e* Hardwired trips snap shut on jolts or roasting temps, locking down risk before it burns through your gear.\u003c\/li\u003e\n\u003c\/ul\u003e\n✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49322325016811,"sku":"VXB0982DKBTK","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/41Hi0S9UyXS.jpg?v=1788235331","url":"https:\/\/vxb.com\/products\/heavy-duty-4s-lithium-ion-battery-balance-board-fo","provider":"VXB Bearings","version":"1.0","type":"link"}