1. Introduction
The JBD-LCD03 is a versatile display unit designed for power battery packs, developed by Dongguan Jiabaida Electronic Technology Co., Ltd. It supports both UART and RS485 communication protocols, making it compatible with various JBD Smart BMS (Battery Management System) protection boards.
Key Features:
- Bilingual Support: Available in both Chinese and English versions.
- Compact Design: Small body (62*39*15.5mm) for easy and fast installation.
- Color Display: Features a vibrant color segment code screen for clear and eye-catching information display.
- Real-time Monitoring: Provides real-time data including total voltage, current, temperature, and battery percentage.
- Abnormal Alarm: Alerts users to potential battery issues such as overcurrent, overcharge, overdischarge, and temperature protection events.
- Low Power Consumption: Designed for extremely low power consumption in shutdown mode, extending battery storage time.
2. Specifications
| Parameter | Value |
|---|---|
| Body Size | 62*39*15.5mm |
| Working Voltage | 6-15V/DC |
| Communication Method | UART or RS485 |
| Operating Temperature | -20°C ~ +70°C |
| Storage Temperature | -30°C ~ +80°C |
| Working Current (12V input) | ≤20mA |
| Sleep Current (protection board sleep) | ≤10uA |
| Charger Included | No |
| Battery Included | No |
| Certification | CE, RoHS |
| Applicable BMS Type | JBD Smart BMS |
Dimensional Drawing:
3. Setup and Installation
The JBD-LCD03 display is designed for easy and fast installation due to its small form factor. Ensure all connections are secure before powering on the device.
Wiring Diagram:
Connector J1 Pinout:
- J1-1: Positive voltage of the display power supply (8-90V)
- J1-2: TXD / RS485-A (Communication line)
- J1-3: RXD / RS485-B (Communication line)
- J1-4: Negative terminal of the display (Note: Cannot be connected to the negative terminal of the battery output.)
Ensure correct polarity and secure connections to prevent damage to the display or the BMS.
4. Operation
The JBD-LCD03 provides clear, real-time information about your battery pack. The display features a power button for control and various indicators for battery status.
Power Button Functionality:
- To Start: Press the manual button.
- Automatic Screen Off: The screen will automatically turn off after 30 seconds of inactivity.
- Enter Sleep Mode: Long press the power button for 2 seconds.
- Exiting Sleep Mode: The display will automatically exit sleep mode if current is detected. You can also press the power button to wake it up.
Display Content:
The display shows:
- Status Indicator: Shows current operational status (e.g., STBY for standby).
- Data Display Area: Real-time values for Voltage (VOL), Current (CUR), and Temperature (TEMP).
- Protection Status Indicator: Indicates active protection states.
- SOC (State of Charge) Show: Displays battery percentage.
- Graphical SOC Instruction: Battery icon divided into 4 segments, each representing 25% power.
- Red segment: 0-25% power
- Yellow segment: 26-50% power
- Green segments: 51-100% power
Product Demonstration Video:
5. Maintenance
To ensure the longevity and optimal performance of your JBD-LCD03 display, follow these simple maintenance guidelines:
- Cleaning: Gently wipe the display screen and casing with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the surface.
- Environmental Conditions: Operate and store the display within the specified temperature ranges (-20°C to +70°C for operation, -30°C to +80°C for storage) to prevent damage.
- Connection Integrity: Periodically check all wiring connections to ensure they remain secure and free from corrosion.
- Avoid Physical Impact: Protect the display from drops or strong impacts, which can cause internal or external damage.
6. Troubleshooting
If you encounter issues with your JBD-LCD03 display, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Display does not turn on | No power supply or incorrect wiring. | Check the power supply voltage (6-15V/DC) and ensure J1-1 and J1-4 are correctly connected to the power source. |
| No data displayed / Incorrect readings | Communication error with BMS or incorrect wiring of communication lines. | Verify that J1-2 (TXD/RS485-A) and J1-3 (RXD/RS485-B) are correctly connected to the BMS communication ports. Ensure the BMS is powered on and functioning. |
| Display shows "Abnormal Alarm" | Battery protection event triggered (e.g., overcurrent, overcharge, overdischarge, high/low temperature). | Check the battery pack and BMS for the specific fault indicated. Address the underlying issue (e.g., reduce load, balance cells, allow battery to cool/warm). |
| Display enters sleep mode unexpectedly | No current detected for 1-2 minutes. | This is normal behavior. The display will wake up automatically when current is detected or by pressing the power button. |
7. User Tips
- BMS Compatibility: The Simple UART and RS485 LCD Display is designed to support JBD Smart BMS for 3-30S battery configurations. Ensure your BMS is compatible for proper functionality.
- Application: This LCD display is primarily used as a battery accessory for lithium battery systems, providing essential monitoring data.
- Communication Type: When ordering, specify whether you need the UART or RS485 version, as the display module cannot be switched between them after manufacturing.
8. Warranty and Support
For detailed product information, technical support, or warranty inquiries, please refer to the official user manual PDF or contact the manufacturer directly.
Official User Manual (PDF): A comprehensive user manual in PDF format is available for download. Click here to view the PDF manual.
Manufacturer Contact Information:
- Company: Dongguan Jiabaida Electronic Technology Co., Ltd.
- Contact Person: Hansen
- Telephone: +86-18778512457
- WeChat: +86 18778512457
- Email: hansenhuang@jbdbms.com
Please have your product model (JBD-LCD03 V1.2) and any relevant details ready when contacting support.