1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of the NYBGBAR KG-F Series Battery Monitor, model KG110F-0-120V-0-100A. This device is designed to accurately measure and display various battery parameters, including voltage, current, capacity, and temperature, for a wide range of battery types. Please read this manual thoroughly before using the product to ensure proper function and safety.
2. Product Overview and Components
The KG-F Series Battery Monitor consists of a display module and a voltage/current measuring module (shunt). It features a 2.4-inch high-definition color LCD screen for clear data visualization and silicone buttons for comfortable operation. The system automatically detects and displays current direction, with distinct colors for charging (green) and discharging (blue).
The device is compatible with various battery chemistries, including ternary lithium, lead-acid, and lithium phosphate batteries, provided they are within the specified voltage range. The shunt and screws are constructed from pure copper for excellent electrical conductivity, minimal heat generation, and low power consumption, preserving battery life in standby mode.
Advanced features include an open-source 485 communication protocol for secondary development, mobile APP control via Bluetooth for data viewing and function settings, and historical data export. The monitor also incorporates protection functions for over-voltage, under-voltage, over-current, over-power, and external over-temperature, which can be configured with a relay to prevent equipment damage. A self-calibration function ensures long-term accuracy.

Figure 2.1: Components of the NYBGBAR KG-F Series Battery Monitor. This image displays the main display unit, the voltage/current measuring module (shunt), a temperature sensor, various connection cables, and terminal blocks. The display shows voltage, current, capacity, and other parameters. The measuring module indicates connection points for voltage, current, temperature, and RS-485 communication.
3. Specifications
| Parameter | Value |
|---|---|
| Sampling Method | Shunt |
| Voltage Measurement Range (External Power Supply) | 0-120V |
| Voltage Measurement Range (Self-powered) | 10-120V |
| Voltage Resolution | 0.01V |
| Current Measurement Range | 0~100A (for KG110F model) |
| Current Resolution | 0.01A |
| Temperature Measurement Range | -20 to 120℃ |
| Capacity Display Range | 0%~100% |
| Power Measurement Range | 0~72KW |
| Display Module | 2.4-inch high-definition color LCD |
| Communication | RS-485, Bluetooth (Mobile APP) |
4. Setup and Installation
Proper installation is crucial for accurate measurements and safe operation. Refer to the wiring diagram provided with your product for specific connection details. The general steps are as follows:
- Connect the Shunt: Install the current shunt in series with the negative terminal of the battery and the load. Ensure all connections are secure and use appropriate gauge wiring for the expected current. The pure copper shunt ensures good conductivity.
- Connect Voltage Measurement Wires: Connect the voltage measurement wires from the measuring module to the positive and negative terminals of the battery. Ensure correct polarity.
- Connect Display Module: Connect the display module to the voltage/current measuring module using the provided communication cable (RS-485 link).
- Connect Temperature Sensor (Optional): If using, connect the temperature sensor to the designated port on the measuring module and place the sensor in the desired location for temperature monitoring.
- Power On: Once all connections are verified, apply power to the battery system. The display module should power on and show readings.
- Mobile APP Connection:
- Download and install the official mobile application for the KG-F series monitor from your device's app store.
- Enable Bluetooth on your mobile device.
- Open the APP and follow the on-screen instructions to connect to the battery monitor via Bluetooth.
- Once connected, you can view real-time data, historical curves, and configure settings.
5. Operating Instructions
The KG-F Series Battery Monitor provides real-time data and configurable settings through its display and mobile application.
5.1 Display Interface
The 2.4-inch LCD screen displays key parameters:
- Voltage (V): Current battery voltage.
- Current (A): Current flowing in or out of the battery. Green indicates charging, blue indicates discharging.
- Capacity (Ah): Remaining battery capacity in Amp-hours.
- Watt-hours (Wh): Total energy consumed or supplied.
- Power (W): Instantaneous power.
- Temperature (℃): Battery temperature (if sensor connected).
- State of Charge (%): Percentage of remaining capacity.
- Run Time: Elapsed time of operation.
5.2 Button Functions
The display module features several buttons for navigation and settings. Refer to the on-screen prompts for specific functions of each button (e.g., SET, OK, navigation arrows).
5.3 Protection Settings
The monitor supports configurable protection parameters. These settings can be accessed via the display menu or the mobile APP. When a parameter exceeds its set limit, the instrument's output state can be turned off (requires an external relay) to protect connected equipment.
- Over-voltage Protection: Set a maximum voltage limit.
- Under-voltage Protection: Set a minimum voltage limit.
- Over-current Protection: Set a maximum current limit.
- Over-power Protection: Set a maximum power limit.
- External Over-temperature Protection: Set a maximum temperature limit.
Protection recovery time and delay time can also be adjusted to suit various application requirements.
5.4 Data Management
- Data Clearing: Amp-hour, watt-hour, and time data can be cleared during measurement without affecting subsequent measurements.
- Self-Calibration: The product includes a self-calibration function to maintain accuracy of current and capacity values over extended periods of use.
- Fine-tuning: Voltage and current values can be fine-tuned for precise capacity readings.
6. Maintenance
To ensure the longevity and accurate performance of your NYBGBAR KG-F Series Battery Monitor, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the display module and shunt. Avoid using abrasive cleaners or solvents that could damage the surfaces.
- Connections: Periodically check all wiring connections to ensure they are tight and free from corrosion. Loose connections can lead to inaccurate readings or system malfunctions.
- Environment: Operate the device within its specified temperature and humidity ranges. Avoid exposure to extreme temperatures, direct sunlight, or moisture.
- Firmware Updates: Check the manufacturer's website or the mobile application for any available firmware updates to ensure optimal performance and access to new features.
7. Troubleshooting
If you encounter issues with your battery monitor, refer to the following common troubleshooting steps:
- No Display/Power:
- Check all power connections to the display module and measuring module.
- Ensure the battery voltage is within the self-powered or external power supply range.
- Inaccurate Readings:
- Verify all wiring connections, especially to the shunt, for correct polarity and tightness.
- Perform a self-calibration or fine-tune voltage/current values via the settings menu or APP.
- Ensure the shunt is correctly installed in series with the negative terminal.
- Bluetooth Connection Issues:
- Ensure Bluetooth is enabled on your mobile device and the monitor.
- Restart the mobile application and the battery monitor.
- Ensure your mobile device is within range of the monitor.
- Protection Function Not Activating:
- Verify that protection limits are correctly set in the menu or APP.
- Confirm that an external relay is properly connected and configured if output control is desired.
If problems persist after attempting these steps, please contact customer support.
8. Warranty and Support
NYBGBAR products are manufactured to high-quality standards. For warranty information and technical support, please refer to the documentation included with your purchase or visit the official NYBGBAR website. Please have your model number (KG110F-0-120V-0-100A) and purchase details ready when contacting support.
For further assistance, you may also refer to the seller's contact information on the platform where the product was purchased.