1. Introduction
The DALY Smart Active Balancer is an advanced battery equalization module designed to efficiently balance the cell voltage differences in Li-ion, LiFePO4, and LTO battery packs. By actively transferring energy between cells, it significantly improves battery performance, extends battery life, and ensures stable operation. This device supports a wide range of battery configurations from 3S to 24S and features intelligent control via a mobile application (SMART BMS) or PC software.
The DALY Smart Active Balancer with its Bluetooth module and mobile app interface for monitoring and control.
2. Key Features
- Efficient Active Balancing: Utilizes power transfer balance technology to efficiently equalize cell voltage differences, improving overall battery performance and extending lifespan.
- Wide Compatibility: Supports 3S to 24S battery configurations for Li-ion, LiFePO4, and LTO battery types. (Note: Hardware active balancer does not support LTO).
- Smart Control: Features a free mobile application (SMART BMS) for Android and iOS, and PC software, allowing users to view battery information, set equalization parameters, and monitor status.
- High Accuracy: Provides voltage detection accuracy of ±0.025V and balance accuracy up to 0.01V.
- Low Energy Consumption: Designed for low power consumption and minimal heat generation, ensuring high safety and long-term connection to the battery.
- Multiple Communication Interfaces: Equipped with RS485 and UART communication ports for versatile integration.
- Compact Design: Small size for easy installation and wide adaptation in various applications.
Illustration of the power transfer balance technology, highlighting efficiency and extended battery life.
3. Applications
The DALY Smart Active Balancer is suitable for a wide range of applications requiring efficient battery management and energy storage, including:
- E-bikes
- Electric Tricycles
- Low Speed Quads
- Forklifts
- Cleaning Cars
- Scooters
- Tourist Cars
- Industrial Drones
- RV Energy Storage
- Energy Storage Cabinets
- Power Banks
- Power Tools
Examples of applications where the DALY Smart Active Balancer can be used.
4. Specifications
The DALY Smart Active Balancer comes in various configurations. Please refer to the table below for detailed parameters.
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Type of Battery | Li-ion, Lifepo4, LTO | Number of battery strings | 3-24S |
| Balance current | 0-1A (Can be set) | Balance method | Active balance |
| Dormancy current | 300uA | Power consumption | <11mA |
| No-dormancy state | 65535s (Be set) | Communication method | UART/RS485 |
| Size (L*W*D) | 115*65*19mm | Equalization Accuracy | ±15mV |
| Balance open condition | Single string cell voltage and the differential pressure can be set (>20mV) | Operating temperature | -20°C ~ 60°C |
Physical Dimensions:
- 3-4S Balancer: 60*35*18mm (Length*Width*Thickness)
- 5-10S Balancer: 87*49*18mm (Length*Width*Thickness)
- 11-16S Balancer: 115*65*19mm (Length*Width*Thickness)
- Smart Active Balancer (3-24S): 115*65*19mm (Length*Width*Thickness)
Detailed product specifications and dimensions for various balancer models.
5. Package Contents
Upon receiving your DALY Smart Active Balancer, please ensure all components are present:
- DALY Smart Active Balancer unit
- Wire cable (1 pc)
- Bluetooth module (for Smart Balancer models)
6. Installation and Wiring
Important Note: The active balancer needs to be matched with a BMS that has the same number of strings. Different numbers of strings cannot be mixed. Ensure all connections are secure to prevent serious consequences such as abnormal operation or burning.
- Pre-installation Check: After the BMS is assembled, check and confirm that all connecting wires are properly welded.
- Connect BMS and Active Balancer: Plug the BMS and the Active Balancer into their corresponding cables.
- Connect Bluetooth Accessory: Plug the Bluetooth accessory into the UART port of the Active Balancer. The BMS socket and Active Balance socket can be used without distinguishing each other.
- Verify Connections: Before activating the BMS, please confirm whether the balancer cable is connected normally. Check whether the BMS has been securely fixed to the battery cell. Only after confirming that it is correct can it be connected to the BMS.
- Measure Voltage: Correctly measure the voltage between adjacent strings using a multimeter before connecting the active equalization module. This ensures proper wiring and prevents damage.
- Complete BMS Settings: After completing the BMS settings, you can set the smart active balancer parameters. The balance current is in the range of 0-1A. To set the balance opening pressure difference parameter, it must be >20mV.
Wiring diagram for connecting the Smart Active Balancer to battery packs.
Video demonstrating the wiring process, voltage measurement, and Bluetooth connection for the DALY Smart Active Balancer.
7. Operation
The DALY Smart Active Balancer can be controlled and monitored via a mobile application or PC software.
7.1. Mobile App (SMART BMS)
The SMART BMS mobile application is available for both Android and iOS systems. It allows you to view battery information, set equalization parameters, and monitor the balancing process.
- Connect Bluetooth: After wiring, activate the Bluetooth module by plugging it into the balancer.
- Download App: Search for "SMART BMS" in your app store and install it.
- Connect Device: Open the app, search for your device (e.g., DL-4016080132D1), and connect.
- View Parameters: The app displays real-time battery parameters such as balance status, balance current, balance position, temperature protection, balanced differential pressure, and dormancy time.
- Set Parameters: You can adjust various equalization parameters directly from the app. The initial password for settings is 123456.
Multi-screen display of the SMART BMS mobile app, showing various battery parameters and settings.
7.2. PC Software
A free PC program is also available for comprehensive monitoring and setting of the active balancer. This provides a detailed view of the battery system.
- Connect to PC: Use the appropriate communication cable (UART/RS485) to connect the balancer to your PC.
- Install Software: Install the DALY PC software.
- Monitor and Adjust: The software allows you to view and adjust balance current, balanced differential pressure, number of battery strings, temperature protection, and other settings.
PC software interface for monitoring and setting balancing parameters.
8. Maintenance
To ensure the longevity and optimal performance of your DALY Smart Active Balancer, follow these maintenance guidelines:
- Regular Inspection: Periodically check all wiring connections to ensure they are secure and free from corrosion or damage.
- Cleanliness: Keep the balancer unit clean and free from dust and debris. Use a dry, soft cloth for cleaning.
- Environmental Conditions: Operate the balancer within the specified temperature range (-20°C to 60°C) and avoid exposure to excessive moisture or extreme temperatures.
- Firmware Updates: Check for any available firmware updates for the balancer or software/app to ensure you have the latest features and improvements.
9. Troubleshooting
If you encounter issues with your DALY Smart Active Balancer, refer to the following common problems and solutions:
- Balancer Not Activating:
- Ensure all wiring connections are correct and secure, especially the balance cables to each cell. Incorrect wiring can prevent activation or cause damage.
- Verify that the number of strings on the balancer matches your BMS and battery pack. - Bluetooth Connection Issues:
- Make sure the Bluetooth module is properly plugged into the UART port.
- Check if Bluetooth is enabled on your mobile device.
- Ensure the app has the necessary permissions to access Bluetooth.
- Try restarting the app and the balancer. - Inaccurate Readings:
- Double-check all voltage sensing wire connections for proper contact.
- Ensure the app or PC software is updated to the latest version. - Balancing Not Occurring:
- Verify that the balance open condition (e.g., differential pressure >20mV) is met and correctly set in the app/software.
- Check the balance current setting in the app/software. - Password for Settings: The initial password for modifying parameters in the app is 123456.
10. User Tips
Based on feedback from other users, here are some helpful tips for using your DALY Smart Active Balancer:
- Voltage Compatibility: The 4S equalizer is compatible with 12V battery systems (e.g., 4S LiFePO4 batteries). The balancer supports 3S-24S configurations for 3.2V LiFePO4 or 3.7V Li-ion batteries.
- Bluetooth Functionality: The Smart Balancer models, including the S8, come with Bluetooth connectivity for easy monitoring and parameter adjustment via the mobile app.
- Software Name: The recommended mobile application for use with this equalizer is "SMART BMS".
- Wiring Precision: Always measure the voltage between adjacent strings carefully before making connections to avoid errors and potential damage.
- Working with BMS: This active balancer is designed to work in conjunction with a BMS. Ensure your BMS and balancer are matched for the correct number of series cells.
11. Warranty and Support
For any technical assistance, warranty claims, or further inquiries, please contact DALY customer support or your authorized dealer. Ensure you have your product model and purchase details ready when contacting support.
