4S–20S 40A Smart BMS for LiFePO4 Battery Pack | Cell Balancing with NTC Protection

Tired of battery failures, overheating, or unbalanced cells ruining your solar, EV, or inverter setup? The amiciKart 4S–20S 40A Smart BMS for LiFePO4 batteries gives you real-time protection, intelligent balancing, and seamless monitoring — all in one compact board built for Indian power conditions.

This Smart BMS supports 4 to 20 cells in series, making it compatible with 12V, 24V, 36V, 48V, and 60V LiFePO4 battery packs. Whether you're building a solar energy storage system, a DIY EV, a UPS backup, or an off-grid inverter setup, this board handles it all. Monitor live voltage, current, State of Charge (SOC), and temperature directly from your smartphone via the XJBMS Bluetooth app. Need inverter or controller integration? The built-in RS485 (UART) port makes that effortless.

Protection is multi-layered and uncompromising: 40A continuous charge/discharge, 70A overcurrent cutoff, and a massive 640A short-circuit response keep your pack safe under any fault condition. NTC temperature sensing adds thermal protection, while automatic passive cell balancing extends overall pack life. Over 340 data records let you diagnose faults and track usage history like a pro.

Designed and supported by amiciKart — an Indian brand with dedicated WhatsApp, call, and email support. Backed by a 1-year warranty, free shipping across India, same-day dispatch on orders before 2 PM, and easy 30-day returns. Build smarter. Protect better. 🔋⚡

• 🔋 One BMS for 12V to 60V Builds — supports 4S to 20S LiFePO4 cell configurations, making it ideal for solar storage, EVs, inverters, UPS, and DIY battery systems without needing multiple boards
• 📡 Live Monitoring via Bluetooth & RS485 — track real-time voltage, current, SOC, and temperature through the XJBMS app (UART/Bluetooth); RS485 port enables seamless integration with inverters, controllers, and automation systems
• ⚡ Robust 40A Continuous Power Handling — rated for 40A continuous charge & discharge with overcurrent protection up to 70A and industry-leading 640A short-circuit protection for safe, stable operation under medium loads
• ⚖️ Automatic Passive Cell Balancing + 340+ Data Records — extends battery pack life by equalising cell voltages automatically, while onboard data logging stores 340+ records for usage tracking, diagnostics, and fault analysis
• 🛡️ Multi-Level Safety Protection — guards against overcharge, over-discharge, overcurrent, short circuit, and temperature extremes (NTC sensor included), ensuring your battery investment stays protected at all times
• 🚚 Free Pan-India Shipping | COD Available — enjoy free delivery across India with same-day dispatch on orders placed before 2 PM; pay via UPI, Card, Net Banking, EMI, or Cash on Delivery
• ✅ 1-Year Warranty & Dedicated Indian Support — backed by a 1-year warranty, 30-day no-questions-asked returns, and direct support via WhatsApp, call (980-970-9898), or email (care@amicikart.com)