Description
JK SMART BMS 4–8S 300A – Model: JK-B2A8S30P (B6AA)
The JK Smart BMS 4–8S 300A (JK-B2A8S30P B6AA) is a high-performance, ultra-heavy-duty Battery Management System designed for 4S–8S LiFePO4 (LFP) battery packs. With an incredible 300A continuous discharge capacity, this BMS is built for demanding applications such as high-power inverters, EV traction systems, marine propulsion, and large off-grid battery banks.
This model includes 2A high-speed active balancing, enabling fast energy redistribution across cells to maintain consistent performance and maximize battery lifespan. It also features CAN/RS485 communication, Bluetooth app control, and comprehensive safety protections, making it one of the most advanced 8S LFP BMS units on the market.
Perfect for large-capacity 24V LiFePO4 batteries from 200Ah to 1500Ah+.
⭐ Key Features
🔹 Supports 4S to 8S LiFePO4 Packs
Compatible voltages:
12.8V (4S LFP)
16V (5S LFP)
19.2V (6S LFP)
22.4V (7S LFP)
25.6V (8S LFP)
Ideal for flexible low-voltage to 24V battery systems.
🔹 Huge 300A Continuous Discharge Capacity
Capable of powering high-demand systems
Industrial-grade MOSFET bank
Excellent for:
3–8kW inverters
24V marine motors
High-power EV systems
Large solar battery banks
Ensures stable performance under extreme loads.
🔹 2A Ultra-Fast Active Balancing
Balances cells at up to 2A
Active during charge and discharge
Keeps cell voltages perfectly aligned
Ideal for large-capacity cells (200Ah–1500Ah+)
🔹 Smart Bluetooth App Control
Real-time monitoring of:
Individual cell voltages
Pack voltage
Current (charge/discharge)
Temperature sensors
SOC, cycles, system logs
Balance activity
Full parameter customization
Android & iOS compatible.
🔹 CAN & RS485 Communication
Compatible with:
Hybrid solar inverters
Smart chargers
Vehicle control systems
Energy management systems
Provides accurate system communication and data reporting.
🔹 Advanced Protection Features
Includes:
Over-charge protection
Over-discharge protection
Overcurrent/short circuit protection
High/low temperature cutoff
Cell imbalance detection
MOSFET protection
Communication error alerts
Fully programmable via the app.
🔹 Heavy-Duty Construction
High-current MOSFET array
Thick copper PCB
Advanced heat-sinking design
Designed for continuous heavy-duty operation
Built to last in professional environments.
