BMS JK-B2A8S-20P
Inverter Smart BMS JK-B2A8S-20P (200A, 8S) with active balancing
Datasheet photos, capacity and internal resistance test reports, certificates — coming soon, available on request from our manager. Replacement guarantee if the cell falls short of rated capacity.
Description
Inverter Smart BMS JK-B2A8S-20P (200A, 8S) with active balancing
JK Smart B2A8S-20P is a next-generation intelligent battery management system (BMS) designed for 8-cell battery packs. The device supports a nominal current of up to 200A and features active balancing, making it a reliable solution for home energy storage systems, solar stations, backup power, and electric vehicles.
Key advantages and innovations
Supports data exchange with inverters and other control systems via CAN and RS485 (depending on firmware version).
The BMS continuously equalizes voltage between cells, significantly reducing battery degradation and allowing efficient use of the entire available capacity.
Ideal for LiFePO4 8S batteries, especially packs based on EVE, CATL, REPT cells and similar.
Built-in Bluetooth module allows real-time monitoring of each cell voltage, current, temperature, SOC, and parameter changes via Android and iOS apps.
Technical features of the model
Protection against overcharge, deep discharge, overcurrent, overheating, and short circuit.
Support for external temperature sensors to monitor battery cells and power components.
High-precision voltage and current measurement ensures accurate determination of remaining capacity and battery health.
Built-in memory stores system operation history and alarm events with timestamps.
Support for connecting a power button, external display, and battery heater (depending on configuration).
Main specifications
| Parameter | Value |
| Charge/discharge current | 200A |
| Balancing current | Active, 2A |
| Configuration | LiFePO4 (8S) |
| Interfaces | Bluetooth, CAN, RS485 |
| Cell voltage | 2.0 – 4.5 V (high measurement accuracy) |
| Operating temperature | from -30°C to +70°C |
Package contents
• BMS board JK-B2A8S-20P with built-in Bluetooth
• Balancing harnesses for 8 cells
• Power connection cables
• Temperature sensors
• Power button (depending on version)
Important: All JiKong (JK) BMS units undergo factory testing, ensuring stable operation and compliance with stated specifications immediately after installation.
