{"product_id":"12v-4s-20a-lifepo4-bms-with-balance-overcharge-over-discharge-short-circuit-overcurrent-protection","title":"12V 4S 20A LiFePO4 BMS with Balance Overcharge, Over-Discharge, Short-Circuit \u0026 Overcurrent Protection","description":"\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWorried about battery failures ruining your project?\u003c\/strong\u003e The amiciKart 12V 4S 20A LiFePO4 BMS is your all-in-one protection solution — engineered to keep your 12.8V LiFePO4 battery pack safe, balanced, and running at peak performance for years.\u003c\/p\u003e\u003cp\u003eThis Battery Management System is purpose-built for 4-cell (4S) LiFePO4 configurations, delivering up to 18–20A of reliable charge and discharge current. What sets it apart is the built-in 50mA passive cell balancing that continuously equalises all four cells — preventing capacity drift and extending your overall pack life significantly. Whether you're building a DIY solar storage system, powering an e-bike, running power tools, or assembling a custom backup battery, this BMS handles the heavy lifting so you don't have to babysit your battery.\u003c\/p\u003e\u003cp\u003eSafety is baked in at every level: millisecond-response protection against overcharge, over-discharge, short circuit, and overcurrent keeps your cells and connected devices safe under any fault condition. Thermal protection automatically shuts the system down at 65°C and resumes operation at 45°C — no manual intervention needed. The auto-recovery feature means the BMS resets itself after a fault clears, making it a true set-and-forget solution for both hobbyists and professionals.\u003c\/p\u003e\u003cp\u003eBacked by a \u003cstrong\u003e1-year warranty\u003c\/strong\u003e from amiciKart with dedicated customer support, this BMS ships free across India with same-day dispatch on orders placed before 2 PM. Only a few units left in stock — order now to avoid delays on your build.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eProtect your battery pack completely — guards against overcharge, over-discharge, short circuit \u0026amp; overcurrent with millisecond-level response (4-in-1 protection, rated for 18–20A charge\/discharge)\u003c\/li\u003e\n\u003cli\u003eExtend battery life with built-in cell balancing — 50mA passive balancing keeps all 4 LiFePO4 cells equal, preventing capacity drift and improving long-term pack stability\u003c\/li\u003e\n\u003cli\u003eThermal safety built in — automatically shuts down at 65°C and self-resumes at 45°C, keeping your pack safe during heavy loads or warm environments\u003c\/li\u003e\n\u003cli\u003eZero-hassle auto-recovery — restarts automatically after any fault condition, no manual reset needed, ideal for unattended solar and backup power setups\u003c\/li\u003e\n\u003cli\u003eDesigned for 12.8V (4S) LiFePO4 packs — precise voltage matching ensures compatibility with e-bikes, solar storage, DIY battery packs, and power tools\u003c\/li\u003e\n\u003cli\u003eShop with confidence — 1-year warranty backed by amiciKart, 30-day no-questions-asked returns, COD available, and free shipping pan-India with same-day dispatch on orders before 2 PM\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"amiciKart","offers":[{"title":"Default Title","offer_id":47906367963291,"sku":"1xBAT-4S-20A","price":399.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/2318\/3771\/files\/719R1yJ3-0L._SL1500__4.jpg?v=1769253913","url":"https:\/\/www.amicikart.com\/products\/12v-4s-20a-lifepo4-bms-with-balance-overcharge-over-discharge-short-circuit-overcurrent-protection","provider":"amiciKart","version":"1.0","type":"link"}