{"product_id":"12v-4s-20a-bms-lithium-battery-protection-board-with-balance","title":"12V 4S 20A BMS Lithium Battery Protection Board With Balance","description":"\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eYour lithium battery pack deserves more than luck — it deserves a smart guardian that never sleeps.\u003c\/strong\u003e The amiciKart 12V 4S 20A BMS Lithium Battery Protection Board is engineered to keep your battery pack safe, balanced, and performing at its best — whether you're building an e-bike, a solar storage unit, or a custom DIY electronics project.\u003c\/p\u003e\u003cp\u003eThis BMS board actively monitors every cell in your 4S lithium-ion or LiPo pack, stepping in the moment something goes wrong. It blocks overcharging before it damages your cells, prevents over-discharging that kills battery capacity, and cuts off short circuits instantly to protect both your battery and your device. With a robust \u003cstrong\u003e18A continuous current rating and 30A surge handling\u003c\/strong\u003e, it comfortably powers high-demand applications without breaking a sweat. The built-in \u003cstrong\u003e40mA passive cell balancing\u003c\/strong\u003e automatically equalises voltage across all four cells, eliminating weak-cell syndrome and extending your pack's overall lifespan.\u003c\/p\u003e\u003cp\u003eWhat makes this board stand out is its \u003cstrong\u003eself-healing auto-reset protection\u003c\/strong\u003e — if a fault is triggered, the board recovers on its own once the condition clears. No manual reset, no downtime, no frustration. It's plug-and-play for makers, hobbyists, solar enthusiasts, and e-bike builders who want reliability without complexity.\u003c\/p\u003e\u003cp\u003eBacked by a \u003cstrong\u003e1-year warranty\u003c\/strong\u003e and real human support via WhatsApp, call, or email (📞 980-970-9898 | ✉️ care@amicikart.com), amiciKart ensures you're never left troubleshooting alone. Ships free across India with same-day dispatch for orders placed before 2 PM.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eStay Safe from Battery Damage – Protects your lithium-ion or LiPo pack against overcharging, over-discharging, and short circuits, keeping your batteries reliable for longer (triple-layer protection built-in)\u003c\/li\u003e\n\u003cli\u003eHandle Heavy Loads with Confidence – Supports up to 18A continuous current and 30A surge current, making it ideal for e-bikes, solar storage setups, and high-drain DIY electronics\u003c\/li\u003e\n\u003cli\u003eAutomatic Cell Balancing for a Healthier Pack – Built-in passive balancing at 40mA evens out cell voltages across all 4 cells, preventing weak cells and extending overall battery life\u003c\/li\u003e\n\u003cli\u003eSelf-Healing Auto-Reset – If a fault is triggered, the BMS resets itself automatically with no manual unplugging or intervention required, so your project keeps running smoothly\u003c\/li\u003e\n\u003cli\u003eCompatible with 4S Li-Ion \u0026amp; LiPo Packs – Works seamlessly with standard 4-cell lithium-ion and LiPo battery configurations, perfect for 12V DIY builds, e-bikes, and solar energy systems\u003c\/li\u003e\n\u003cli\u003eFree Shipping Pan-India + COD Available – Delivered across India in 3–5 business days with same-day dispatch on orders before 2 PM; pay via UPI, card, net banking, EMI, or Cash on Delivery\u003c\/li\u003e\n\u003cli\u003e1-Year Warranty \u0026amp; Hassle-Free Support – Backed by a 1-year warranty and 30-day easy returns; reach our dedicated support team via WhatsApp, call, or email for fast assistance (📞 980-970-9898 | ✉️ care@amicikart.com)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"amiciKart","offers":[{"title":"Default Title","offer_id":48039350599835,"sku":"1xBAT-4S-20A-Li-Ion","price":449.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/2318\/3771\/files\/719R1yJ3-0L._SL1500__5.jpg?v=1771586524","url":"https:\/\/www.amicikart.com\/products\/12v-4s-20a-bms-lithium-battery-protection-board-with-balance","provider":"amiciKart","version":"1.0","type":"link"}