1. Product Introduction
The Dyness B4850 Lithium Battery Module is a multifunctional device designed for daily use, maintenance, operation, and related applications in home energy storage systems. It features stable performance, reliable quality, simple structure, and convenient operation, suitable for both household and professional scenarios.
This module is ideal for solar energy storage systems, home appliances, consumer electronics, electric power systems, power tools, and uninterruptible power supplies. Its compact design and wide temperature range make it a versatile solution for various applications.
2. Safety Instructions
Please read all safety instructions carefully before using the product to prevent accidental injury and ensure safe operation.
- WARNING: Keep out of reach of children to prevent accidental injury.
- WARNING: Use only in accordance with its intended purpose.
- WARNING: Ensure a safe operating environment before use.
- Use the product only under normal, dry, and safe environmental conditions.
- Do not use the product beyond its designed function or overload.
- Keep hands, hair, and clothing away from moving or working parts.
- Stop using immediately if abnormal noise, damage, or malfunction occurs.
- Do not use in wet, humid, flammable, or explosive environments.
- Keep the product away from fire, high temperature, and sharp objects.
- Do not disassemble, modify, or forcibly damage the product.
- Unplug or disconnect power before cleaning, replacing parts, or performing maintenance.
- Use appropriate protective equipment if necessary.
3. Product Features
- Intelligent Battery Management System (BMS) for optimal performance and safety.
- Stable performance and long service life, with a calendar life of 6000 cycles.
- Simple and convenient to operate.
- Compact and safe design for easy storage and integration.
- Safe and reliable for normal use, protecting your home energy system.
- Wide range of applications and wide temperature range.
- Supports parallel connection of up to 40 units for scalable energy storage.
4. Technical Specifications
| Item | Value |
|---|---|
| Brand Name | Dyness |
| Model Number | B4850 |
| Battery Type | LiFePO4 (Lithium Iron Phosphate) |
| Nominal Voltage | 48V |
| Nominal Capacity | 50Ah |
| Nominal Energy | 2.4kWh |
| Charge Rate | 0.5C |
| Discharge Rate | 0.5C |
| Cycle Life | 6000 Cycles |
| Color | Black |
| Dimension (L*W*H) | 480*360*90 mm |
| Weight | 22kg |
| Protection Level | IP20 |
| System Type | Stackable, Rack-mounted |
| Communication Port | CAN, RS232, RS485 |
| Grid Connection | Off-grid, Hybrid grid |
| Protection | Built-in Smart BMS |
| OEM/ODM | Warmly Welcomed |
| Warranty | 7 & 10 Years (Limited by specifications and warranty terms) |
| Certifications | CE, CEI 0-21, UL, MSDS, TÜV, UN38.3, ISO 9001 |
5. Setup and Installation
Before installation, ensure the product is intact and all safety instructions are followed. The Dyness B4850 module is designed for rack-mounted or stackable installations.
5.1 Physical Installation
The battery module has dimensions of 480mm (L) x 360mm (W) x 90mm (H) and weighs 22kg. Ensure the installation location can support the weight and dimensions, and provides adequate ventilation.
5.2 Electrical Connections
The module features positive (+) and negative (-) terminals for power connection, and CAN/485 IN/OUT ports for communication. It supports parallel connection of up to 40 units.
5.3 Parallel Connection
For increased capacity, multiple B4850 modules can be connected in parallel. Ensure proper wiring for both power and communication between units.
5.4 System Integration
The battery module integrates with various inverters and home solar systems. Refer to the inverter's manual for specific connection details.
Compatible inverter brands include, but are not limited to:
6. Operating Instructions
Once installed, the Dyness B4850 module can operate in various modes depending on your energy management system and preferences.
- Mode I: Spontaneous Self-Use Mode
The energy produced by the PV system is used to optimize self-consumption. Excess energy charges the batteries, then exports to the grid. - Mode II: Load First Mode
When there is no PV generation, and the battery is sufficient, it can supply the load together with grid power. - Mode III: Battery First Mode
When grid fails, the system automatically switches to Back-Up mode. The Back-Up load can be supported by PV and battery. - Mode IV: Timed Charging and Discharging Mode
Battery can be charged by grid, and charging time/power can be set flexibly on the PV Master APP.
7. Maintenance and Storage
- Clean the surface of the battery module with a soft, dry cloth after use.
- Do not wash with water or corrosive liquids.
- Store the product in a dry, cool, and well-ventilated place.
- Regularly check for any signs of wear or damage to ensure safe use and optimal performance.
8. Troubleshooting
If you encounter any abnormal noise, visible damage, or malfunction during operation, immediately stop using the product. Refer to the detailed user manual (PDF) for specific troubleshooting steps or contact customer support.
9. Warranty and Support
The Dyness B4850 Lithium Battery Module comes with a limited warranty valid for a period of 7 or 10 years after delivery. This warranty is restricted by specific product specifications and warranty terms. Please refer to the official warranty documentation for full details.
For any questions regarding usage, quality, or after-sales service, please contact Dyness customer support:
- Email: 17670348923@163.com
- WhatsApp: +86 133 6731 6052
Customer support aims to reply within 24 hours.
10. Additional Resources
A comprehensive user manual in PDF format is available for detailed instructions and technical information. You can view or download it for further reference: