XY-BT13L DC Coulometer and Battery Management Module

1. Product Overview

The Aideepen XY-BT13L is a versatile DC coulometer and battery management module designed for precise monitoring and control of battery charging and discharging processes. It features bidirectional current detection, a full-view LCD display, serial communication with Modbus protocol, and wide voltage compatibility (10-110V). This module is ideal for extending battery life and ensuring accurate power statistics for various applications, including vehicles and other electrical systems.

This image displays the XY-BT13L module, highlighting its main features such as Coulombmeter, Precision Capacity, Overcharge & Overdischarge protection, OVP, LVP, OCP, OTP, Low Battery Alarm, Delayed Conduction, Forced Conduction, and UPS Mode. It also indicates Bidirectional Current Detection for 30A, Battery Voltage 10V-110V, Automatic Calibration of Battery Capacity, Dedicated Liquid Crystal Display with Full Viewing Angle, and support for Serial Communication with Standard Modbus Protocol.

2. Setup and Wiring

Before connecting the module, ensure all power sources are disconnected. Follow the wiring diagram carefully to prevent damage to the module or connected devices.

This diagram illustrates the connection of the XY-BT13L module to a charger, battery/rechargeable battery, and load. It shows the 30A Charging Relay Switch and 30A Discharging Relay Switch, along with the UP, DOWN, SET, and STOP buttons. The Serial Communication Interface is also indicated, supporting Standard Modbus Protocol and Customized General Communication. It can also be connected to a TTL-to-RS485 module or a WiFi module for remote control.

Connection Steps:

1. Connect the charger to the module's input terminals (IN+ and IN-).
2. Connect the rechargeable battery to the battery terminals (BT+ and BT-).
3. Connect the load to the output terminals (OUT+ and OUT-).
4. Ensure all connections are secure and correct polarity is observed.

For a visual guide on connecting and operating the module, please refer to the demonstration video below:

3. Operating Instructions

Display Interface:

This image provides an overview of the module's LCD display, showing various parameters: Current (A), Power (W), Capacity (Ah), Energy (Wh), Percentage (%), Runtime (h), and Temperature (°C). It explains that briefly pressing the SET button cycles through these displays on the lower screen.

Button Functions:

• SET Button (Short Press): Cycles through display parameters on the lower screen (Power, Capacity, Energy, Battery Level, Runtime, Temperature).
• SET Button (Long Press): Enters system parameter settings.
• UP Button: Used to increase values or navigate up in settings.
• DOWN Button: Used to decrease values or navigate down in settings.
• STOP Button: Used to stop or pause operations.

Charge and Discharge Management:

This diagram illustrates the conditions for switching between Charge Mode and Discharge Mode. For Charge Mode completion and transition to Discharge Mode, any of these conditions must be met: battery voltage > overvoltage protection threshold, battery capacity is full, charging current < minimum current threshold (LAP), or charge time > time threshold (OHP). For Discharge Mode completion and transition to Charge Mode, any of these conditions must be met: battery voltage < undervoltage protection threshold, battery capacity < low power protection, discharge current < minimum current threshold (LAP), or discharge time > time threshold (OHP). LAP, OHP, and LBP can be turned on or off automatically.

4. Specifications

This image provides a visual representation of the module alongside a table detailing its specifications, including brand, model, voltage ranges, current, accuracy, resolution, and operating temperature.

This image shows the physical dimensions of the XY-BT13L module (80mm length, 78mm width, 22mm height) and its typical packaging dimensions (125mm length, 86mm width, 40mm height).

5. Maintenance

The XY-BT13L module is designed for durability and requires minimal maintenance. To ensure optimal performance and longevity:

• Keep the module clean and free from dust and moisture.
• Avoid exposing the module to extreme temperatures or direct sunlight.
• Regularly check all wiring connections for tightness and signs of wear.
• Do not attempt to open the module casing, as this may void any potential warranty and expose sensitive components.

6. Troubleshooting

If you encounter issues with your XY-BT13L module, consider the following common troubleshooting steps:

• No Display/Power: Check power connections and ensure the input voltage is within the 10-110V DC range.
• Incorrect Readings: Verify all wiring is correct, especially current sensing connections. Ensure the battery capacity has been calibrated if necessary.
• Module Not Responding: Disconnect power, wait a few seconds, and reconnect. If the issue persists, check for any visible damage to the board.
• Unexpected Charging/Discharging Behavior: Review the charge/discharge parameters set in the system settings (long-press SET button) to ensure they match your requirements.

For more detailed troubleshooting or technical support, please refer to the official user manual PDF or contact the manufacturer.

7. User Tips

• Initial Calibration: For the most accurate capacity readings, perform an initial calibration of your battery with the module.
• Parameter Customization: Take advantage of the system parameter settings (accessed by long-pressing the SET button) to customize overvoltage, undervoltage, and current thresholds to perfectly match your battery type and application.
• Remote Monitoring: If using the optional WiFi module, ensure a stable network connection for reliable remote control and data monitoring.

8. Warranty and Support

For information regarding product warranty, returns, or advanced technical support, please refer to the official documentation provided by Aideepen or contact their customer service directly. A detailed user manual in PDF format is available for download: XY-BT13L User Manual (PDF).