1. Introduction
The JIKONG JK-PB2A16S30P V19 is an advanced Active Balancer Battery Management System (BMS) designed for various battery chemistries including Li-ion, LiFePO4, and LTO. This intelligent BMS supports 8S to 16S battery configurations with a robust 300A continuous discharge current, making it ideal for household energy storage systems, communication base stations, building energy storage, and industrial equipment backup power. It features efficient active balancing, comprehensive protection functions, and intelligent interaction via mobile app or host computer.
Figure 1: JIKONG BMS Application Scenarios
2. Safety Information
Please read and understand all safety instructions before installing or operating the JIKONG BMS. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Always wear appropriate personal protective equipment (PPE) when working with batteries and electrical systems.
- Ensure all power sources are disconnected before performing any wiring or maintenance.
- Do not attempt to open or modify the BMS unit. There are no user-serviceable parts inside.
- Keep the BMS away from water, moisture, and flammable materials.
- Ensure proper ventilation around the BMS to prevent overheating.
- Verify all connections are secure and correctly polarized before applying power.
- Consult a qualified electrician or battery specialist if you are unsure about any installation steps.
3. Product Overview
3.1. Key Features
- Active Balancing: 2A active balance current for efficient cell equalization, prolonging battery life and increasing equilibrium efficiency by up to 400%.
- Wide Compatibility: Supports 8S to 16S Li-ion, LiFePO4, and LTO battery configurations.
- High Current Capacity: 300A continuous discharge current with a common port for charge and discharge.
- Comprehensive Protection: Includes overcharge, over-discharge, overcurrent, and short circuit protection.
- Intelligent Monitoring: Real-time data viewing (voltage, current, temperature, cell count) via mobile app (Android/iOS/HarmonyOS) or PC software.
- Multiple Communication Interfaces: Equipped with CAN, RS485, UART, and RS232 for versatile integration with inverters and other systems.
- Parallel Protection Technology: Patented 10A current limiting module supports safe parallel connection of multiple battery packs.
- Robust Design: Features a high-performance MCU, aluminum alloy heat sink for effective temperature management, and precise voltage detection (±0.025V).
- Dedicated Display: Optional 4.3-inch touch screen display for direct monitoring and control.
Figure 2: JIKONG Home Energy Storage BMS Features
3.2. Packing List
The following items are included in your JIKONG JK-PB2A16S30P V19 package:
- BMS x 1
- Interface board x 1
- Adapter cable B x 1 (30cm long)
- Adapter cable A x 1 (30cm long)
- R545 Network cable x 1 (40cm long)
- Cells total B+ Cable x 1 (50cm long)
- Sampling line A x 2 (90cm long)
- Sampling line B x 1 (90cm long)
- Sampling line C x 1 (90cm long)
- Switch x 1 (50cm long)
- Adapter Cable C x 1 (30cm long)
- Heating Adapter cable x 1 (17cm long)
- Adapter x 1
Figure 3: JIKONG BMS Packing List
4. Specifications
The following table details the technical specifications for the JIKONG JK-PB2A16S30P V19 BMS:
| Technical Index | JK-PB2A16S30P |
|---|---|
| Number of Battery Strings (Li-ion) | 7S-16S |
| Number of Battery Strings (LiFePo4) | 8S-16S |
| Number of Battery Strings (LTO) | 14S-16S |
| Balance Method | Active Balance (Full State On) |
| Balance Current | 2A |
| Conductive Resistance in Main Circuit | 0.25mΩ |
| Continuous Discharge Current | 300A |
| Maximum Discharge Current (MAX 2min) | 300A |
| Over Charge Protection Current (ADJ) | 600A |
| Other Interfaces (Default) | RS485/232/CAN/UART |
| Supply Voltage | 20-70V |
| Wiring Output | Common Port |
| Single Cell Voltage Range | 1-5V |
| Voltage Acquisition Accuracy | ±5mV |
| Over Charge Protection Voltage | 1.2-4.35V Adjustable |
| Over Charge Release Voltage | 1.2-4.35V Adjustable |
| Over Current Detect Delay | 2-120S Adjustable |
| Over Discharge Protection Voltage | 1.2-4.35V Adjustable |
| Over Discharge Release Voltage | 1.2-4.35V Adjustable |
| Quantity of Temperature Detection | 4 |
| Temp Protection | Yes |
| Short Circuit Protection | Yes |
| Coulomb Counter | Yes |
| Bluetooth Function | Support for Android/iOS/Harmony |
| Parallel charging current limiting | 10A |
| Address dial switch | 4 |
| DRY Contact | 2 |
Table 1: JIKONG JK-PB2A16S30P V19 Product Specifications
5. Setup and Installation
Careful installation is crucial for the safe and efficient operation of your JIKONG BMS. Follow these steps precisely:
- Prepare the Battery Pack: Ensure your battery pack is assembled correctly with the desired number of series cells (8S-16S for LiFePO4, 7S-16S for Li-ion, 14S-16S for LTO).
- Connect All Cables: Connect all necessary cables (sampling lines, communication cables, etc.) to the BMS.
- Insert Cables into BMS: Carefully insert the balance cables into the designated ports on the BMS.
- Connect B- and P- Lines: Connect the B- line (negative terminal of the battery pack) and the P- line (negative terminal for load/charger) to the BMS.
- B8 Cable Note: If your setup includes two B8 cables, only the first B8 line needs to be connected. The second B8 cable is not required for standard operation.
Refer to the wiring diagrams below for detailed connection instructions for 16-string and 8-string cell configurations.
Figure 4: Wiring Methods for 16-string and 8-string Cells
5.1. Communication Interface Setup
The JIKONG BMS supports various communication protocols for integration with inverters and other systems. These can be configured via the mobile app or host computer software.
Figure 5: Protocol Docking and Mobile App Setup
The host computer interface also allows for setting inverter communication protocols:
Figure 6: Host Computer Interface and Supported CAN Protocols
6. Operation
The JIKONG BMS offers intelligent interaction and easy operation through its dedicated display, mobile app, or PC software.
6.1. Monitoring Battery Data
You can view essential battery information such as voltage, current, temperature, and number of strings with a single click on the dedicated display or through the app/software.
Figure 7: Intelligent Interaction and Data Display
Figure 8: Multi-screen Display Options
6.2. Adjusting Protection Values
Freely adjust multiple protection values such as overcharge, over-discharge, overcurrent, temperature, and balance settings via the mobile app or host computer. Always read the internal parameters of the protection board first before making changes.
7. Maintenance
To ensure the longevity and optimal performance of your JIKONG BMS, consider the following maintenance guidelines:
- Regular Inspection: Periodically check all wiring connections for tightness and signs of corrosion or damage.
- Cleanliness: Keep the BMS unit clean and free from dust and debris. Use a dry, soft cloth for cleaning.
- Environmental Conditions: Ensure the BMS operates within its specified temperature and humidity ranges. Avoid exposing it to extreme conditions.
- Software Updates: Check for and apply any available firmware or software updates for the mobile app or PC software to ensure optimal performance and access to new features.
- Battery Health Monitoring: Regularly monitor battery cell voltages and temperatures through the BMS interface to detect any anomalies early.
8. Troubleshooting
If you encounter issues with your JIKONG BMS, consider the following troubleshooting steps:
- No Power/Display: Check all power connections, including the main battery connections (B- and P-) and the display/switch cable. Ensure the battery pack has sufficient voltage.
- Communication Issues: Verify that the correct communication protocol is selected in the app/software and that all communication cables are securely connected. Check for any error messages on the display or in the app.
- Balancing Not Active: Ensure the active balance function is enabled in the settings. Check individual cell voltages to confirm if balancing is needed.
- Over-protection Triggered: If the BMS triggers an overcharge, over-discharge, or overcurrent protection, identify the cause (e.g., faulty charger, excessive load, imbalanced cells) and rectify it before resetting the BMS.
- Incorrect Readings: Ensure all sampling lines are correctly connected to each cell. Check for any loose or damaged wires.
8.1. User Tips
- Pre-charge Functionality: Some users inquire about pre-charge. The JIKONG BMS is designed for robust power management. If you require specific pre-charge functionality for your inverter or system, ensure your external components are configured accordingly or consult the BMS settings for related parameters.
- Initial Setup Verification: Double-check all wiring, especially the balance leads, before the first power-up to prevent damage.
- App/Software Exploration: Take time to explore all settings and monitoring features within the mobile app or PC software to fully utilize the BMS capabilities.
9. Warranty and Support
The JIKONG JK-PB2A16S30P V19 BMS is manufactured by JIKONG. For warranty information, technical support, or service inquiries, please contact the seller or JIKONG customer service directly. Keep your purchase receipt as proof of purchase.