Why You Need It? – Protects your valuable LiFePO4 battery pack from overcharge, over-discharge, overheating, and overcurrent while ensuring balanced cell performance—maximizing safety, lifespan, and reliability for your entire power system.
Designed for 4S LiFePO4 Batteries – Built specifically for 4-cell (12.8V nominal) LiFePO4 packs with a maximum charging voltage of 14.7V, ideal for solar storage, e-bikes, UPS, and portable power solutions.
Robust 40A Continuous Current – Handles 40A charge/discharge current, with 120A peak overcurrent protection and fast 150ms delay—ensuring reliable high-load performance for demanding applications.
Advanced Safety with NTC Sensors – Integrated NTC temperature sensors deliver intelligent thermal protection: charging cutoff at 50°C ±5°C, discharge cutoff at 70°C ±5°C, and automatic recovery to prevent overheating.
Active Cell Balancing – Enhances battery health with 50mA balance current at a precise 3.575V level, keeping all cells aligned and extending overall pack life.
Ultra Low Standby Power – Consumes just 40µA in idle mode and built with 30mΩ internal resistance, making it energy-efficient and ideal for long-term standby applications.
Warranty:-The products come with 1 year warranty (To claim warranty feel free to contact amicikart at 980 970 9898 or care@amicikart.com).

Product Description:
The amiciSolar XJ-D096 4S 12V 40A BMS is a high-performance Battery Management System designed to safeguard and optimize LiFePO4 (LFP) battery packs. Perfect for 12.8V configurations, this smart BMS offers robust 40A current handling, precise overcharge and over-discharge protections, and 120A peak overcurrent cutoff to protect both batteries and connected loads.
Built for intelligent energy management, the XJ-D096 features NTC temperature sensing, cutting off charging at 50°C and discharging at 70°C, ensuring thermal safety in high-load or ambient heat environments. It balances cells with 50mA active current, maintaining tight voltage alignment across cells for maximum pack life.
Designed with low-power standby and 30mΩ internal resistance, this BMS is ideal for solar systems, electric bikes, power walls, backup energy packs, and other 12V battery-based applications where precision, protection, and performance matter most.
Technical Specification:
Battery Configuration: 4S (4 series cells)
Nominal Voltage: 12.8V (LiFePO4)
Battery pack charging voltage:- 14.7V (Maximum)
Single - cell over - charge detection voltage:- 3.675V
Over - charge recovery voltage:- 3.61V
Over - charge detection delay:- 1500mS
Single - cell over - discharge detection voltage:- 2.42V
Over - discharge recovery voltage:- 2.68V
Over - discharge detection delay:- 1500mS
Battery pack continuous discharge current:- 40A
Battery pack continuous charging current:- 40A
Discharge over - current protection:- 120A
Over - current protection delay:- 150mS
Self - consumption:- 40uA
Balance current:- 50mA
Balance voltage:- 3.575V
Charging temperature protection:- 50℃±5℃
Discharging temperature protection:- 70℃±5℃
Short - circuit protection:- Yes
Normal working state B - to P - internal resistance:- 30mΩ
Continuous 20A output current maximum temperature rise:- 40℃

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