40A JK 4S–8S Smart BMS with 400mA Active Balancing & Bluetooth – JK-BD4A8S4P
Discover the JK 8S 60A Smart BMS with 400mA active balancing, Bluetooth support, and full protection features. Ideal for LiFePO4, Li-ion.
Description
40A JK 4S–8S Smart BMS with 400mA Active Balancing & Bluetooth
The JK-BD4A8S4P is a smart battery management system with 40A continuous current, 0.4A (400mA) active balancing and Bluetooth connectivity. The supplied unit's label specifies 4–8 cells in series and 60A instantaneous/peak current. The 60A figure is not the continuous current rating.
Key Features
- Supports 4S–8S configurations as printed on the supplied unit.
- 40A continuous current; manufacturer's catalogue lists 40A charge/discharge.
- 400mA active cell balancing.
- Bluetooth monitoring and settings through the JK/Jikong mobile app.
- Bluetooth module marked ZX-D30 on the photographed unit.
Specifications
| Brand | JK / Jikong |
|---|---|
| Model | JK-BD4A8S4P |
| Series configuration | 4S–8S, as labelled |
| Continuous current | 40A |
| Peak current | 60A, labelled instantaneous current; duration not specified |
| Balancing method | Active balancing |
| Balancing current | 0.4A / 400mA |
| Connectivity | Bluetooth |
LiFePO4 Pack Voltages
With 3.2V nominal LiFePO4 cells, nominal pack voltages are 12.8V (4S), 16V (5S), 19.2V (6S), 22.4V (7S) and 25.6V (8S). Select the correct chemistry, cell count and protection settings for your battery.
Applications and Installation
For compatible battery-pack builds and repairs within the board's cell-count and current ratings. Verify starting surges, charging requirements and wiring against the exact model's instructions. Have a qualified battery technician check the sense-wire sequence before connection.
Compatibility: This listing is for JK-BD4A8S4P, not a 16S or 24S BMS. Confirm chemistry-specific operating limits before use with Li-ion or LTO cells. CAN, RS485, heating, external display inclusion, weight and dimensions are not confirmed for the supplied unit.
Package Includes
1 × JK-BD4A8S4P BMS. Confirm included cables, switch, probes and any optional display before ordering.
