1. Introduction
This DALY BMS (Battery Management System) is designed for 16S 24V 250A LiFePO4 battery systems. It provides comprehensive protection, active cell balancing, and smart monitoring capabilities via Bluetooth and WiFi. This manual outlines the product's features, specifications, installation, operation, and troubleshooting to ensure safe and efficient use.
2. Key Features
- Comprehensive Protection: Includes low voltage cutoff, high voltage cutoff, short circuit protection, and temperature protection for enhanced battery performance and longevity.
- 2-in-1 Bluetooth/Wi-Fi Dongle: Enables local and remote battery monitoring through the Smart BMS mobile application, providing real-time system alerts and customizable parameters.
- Multiple Parallel System Support: The built-in parallel circuit supports 8+ battery packs, allowing for scalable capacity expansion by adding more batteries.
- 5A Active Balancer: Facilitates faster cell balancing, reduces heat generation, improves energy efficiency, and extends system runtime.
- Inverter Compatibility: Designed for seamless integration with various inverter systems.
3. Package Contents
Verify that all items listed below are included in your package. If any items are missing or damaged, please contact customer support.
Image: DALY BMS 16S 250A package contents. This image displays the various components included in the product package, such as the BMS unit, active balancer, wiring, and documentation.
- Smart BMS (16S 24V 250A)
- 5A 16S Active Balancer
- B-P-Output Line
- 2-in-1 Bluetooth/Wi-Fi Dongle
- Sampling Cable
- NTC Temperature Sensor
- Instruction Manual
- Screws for mounting
- CAN/485 5-pin connector
- Packaging Box
4. Specifications
The following table details the technical specifications for the DALY BMS 16S 24V 250A with 5A Active Balancer.
Image: DALY BMS parameter table. This table provides detailed electrical and operational specifications for the BMS.
| Parameter | Value |
|---|---|
| Brand | DALY |
| Model Number | 16S250AF-5B-W |
| Battery Type Support | LiFePO4 |
| Series Configuration | 16S |
| Input Voltage | 48 Volts |
| Output Voltage | 48 Volts DC |
| Continuous Discharge Current | 250A |
| Active Balancer Current | 5A |
| Communication Interfaces | RS485, CAN, WiFi, Bluetooth |
| Overcharge Protection Voltage | LiFePO4: 3.75V ± 0.05V (Can be set up) |
| Overdischarge Protection Voltage | LiFePO4: 2.2V ± 0.05V (Can be set up) |
| Short Circuit Protection | Yes (10-500ms delay) |
| Operating Temperature Range | Charging: 35-75°C; Discharging: 35-75°C |
| Storage Temperature Range | -40-85°C |
| Certifications | ISO/FCC/RoHS/PSE/CE approved |
| UPC | 753252852889 |
5. Setup and Installation
Proper installation is crucial for the safe and effective operation of your DALY BMS. Always refer to the detailed wiring diagrams provided in the included manual for specific connection instructions. Ensure all connections are secure and correctly polarized.
Image: DALY BMS 16S 250A with 5A Active Balancer. This image shows the main BMS unit, the active balancer, and the WiFi/Bluetooth dongle.
5.1 Wiring Connections
- Connect the B- terminal of the BMS to the negative terminal of the battery pack.
- Connect the P- terminal of the BMS to the negative terminal of the load/charger.
- Connect the positive terminal of the battery pack to the positive terminal of the load/charger.
- Carefully connect the sampling cable to the battery cells in the correct sequence, starting from B0 (negative) to B16 (positive).
- Connect the 5A Active Balancer to the designated ports on the BMS and battery pack as per the wiring diagram.
- Plug in the 2-in-1 Bluetooth/Wi-Fi dongle to the communication port on the BMS.
5.2 Parallel System Setup
The DALY BMS supports multiple parallel systems to increase overall battery capacity. Ensure that all battery packs in a parallel configuration are of the same voltage and capacity, and that their BMS units are correctly configured for parallel operation.
Image: DALY BMS parallel system support. This graphic illustrates how multiple battery packs can be connected in parallel with the DALY BMS to expand capacity.
6. Operation
The DALY BMS offers smart monitoring and control capabilities through its dedicated mobile application.
6.1 Smart Monitoring via App
- Download the Smart BMS mobile application from your device's app store.
- Connect to the BMS via Bluetooth or Wi-Fi using the provided dongle.
- Monitor real-time battery parameters such as voltage, current, temperature, and state of charge (SOC).
- Receive system alerts and notifications for any abnormal conditions.
- Customize various BMS parameters to suit your specific battery system requirements.
Image: Smart BMS mobile app interface. This screenshot displays the application's dashboard with real-time battery data and status indicators.
7. Safety and Protection Features
The DALY BMS is equipped with multiple safety features to protect your battery system and ensure reliable operation.
Image: DALY BMS 5 Safety Protections. This diagram visually represents the various protection mechanisms integrated into the BMS.
- Overcharging Protection: Prevents battery cells from being charged beyond their safe voltage limit.
- Overdischarging Protection: Stops discharge when battery cells reach their minimum safe voltage, preventing damage.
- Overcurrent Protection: Disconnects the battery from the load if the current exceeds a safe threshold.
- Short Circuit Protection: Immediately cuts off power in the event of a short circuit to prevent damage and fire hazards.
- Extreme Temperature Protection: Monitors battery temperature and initiates protective measures if temperatures fall outside safe operating ranges.
8. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your DALY BMS and battery system.
- Periodically inspect all wiring connections for tightness and corrosion.
- Monitor battery cell voltages and temperatures via the Smart BMS app to identify any anomalies.
- The 5A active balancer helps maintain cell voltage consistency, reducing the need for manual balancing.
- Keep the BMS unit clean and free from dust and debris to ensure proper cooling.
Image: Active cell balancing benefits. This graphic highlights how active balancing contributes to better battery health and efficiency.
9. Troubleshooting / Frequently Asked Questions
This section addresses common questions and issues related to selecting and using your DALY BMS.
Image: What BMS is suitable for my battery? This image provides a comprehensive FAQ for selecting and understanding BMS functionality.
9.1 BMS Selection Guidance
- Q1: What battery cell type (Li-ion/LiFePO4/LTO) and how many cells are connected in series (Strings)?
A1: This BMS is designed for 16S LiFePO4 battery configurations. Ensure your battery pack matches this specification. - Q2: How much ampere current is needed?
A2: To ensure proper compatibility and protection, the BMS's rated current should match or exceed your controller's maximum operating current. For example, if your controller peaks at 60A, choose a BMS rated for 60A or higher. This model is rated for 250A. - Q3: Do you need to monitor or customize all important data?
A3: Yes, the DALY Smart BMS with Bluetooth Dongle allows for easy monitoring and setting via the mobile app or PC software. - Q4: Do your battery cells last more than 1 year or 1,000-charge cycle lifespan?
A4: We recommend using an Active Balancer (1A or 5A) to maximize service life, especially if using series-connected batteries. This model includes a 5A active balancer.
9.2 Common Operational Questions
- Q: Worried about freezing temperatures damaging your batteries?
A: Heating modules can protect your batteries in extreme cold. Contact customer support for assistance with heating solutions. - Q: Does your battery pack connect to the inverter via CAN or RS485?
A: Yes, DALY BMS with CAN or RS485 works with many inverters. An additional interface board may be required. - Q: Tired of checking battery status via your phone app and prefer a direct screen view?
A: Dedicated display options are available, including 3-inch and 4.3-inch touch screens. - Q: Need to parallel multiple battery banks?
A: DALY parallel modules limit charging current with rated capacities (1A, 5A, 15A) for safe multi-bank charging, protecting the Smart BMS and batteries from high-current damage. - Q: Can I remotely monitor my batteries from the office?
A: Yes, using DALY Wi-Fi module and IoT technology enables real-time monitoring of battery voltage, current, temperature, and internal resistance, transmitting data to a remote server or device for easy management.
10. Warranty Information
The DALY BMS 16S 24V 250A with 5A Active Balancer is covered by a 5-YEAR WARRANTY. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims. For detailed warranty terms and conditions, refer to the official DALY documentation or contact customer support.
Image: DALY BMS with 5-year warranty. This image highlights the extended warranty period for the product.
11. Support
For technical assistance, troubleshooting, or any questions regarding your DALY BMS, please contact DALY customer support. You can find contact information on the official DALY website or through your purchase platform.
Online resources and FAQs may also be available to help you with common inquiries.