1. Important Safety Instructions
Please retain this manual for future reference. This manual contains instructions for the installation as well as operation of the Home Storage Battery Pack. Please read all instructions and precautions in the manual carefully before installation and use. There are non-safe voltages inside the home energy storage battery pack, to avoid personal injury, users should not disassemble it by themselves, and contact our professional maintenance personnel if maintenance is needed.
1.1. General Safety Warnings
- Do not put the battery into water or get it wet!
- Do not charge the battery in a source of ignition or in extremely hot conditions! Do not use or store batteries near sources of heat such as fire or heaters! If the battery leaks or emits an odor, remove it immediately from close proximity to an open flame.
- Please use a dedicated charger!
- Do not reverse the positive and negative terminals!
- Do not connect the battery directly to a wall outlet or vehicle cigarette lighter outlet!
- Do not put the battery into a fire or heat the battery!
- It is prohibited to short-circuit the positive and negative terminals of the battery with wires or other metal objects, and it is prohibited to transport or store the battery together with necklaces, hairpins or other metal objects!
- Do not pierce the battery case with nails or other sharp objects, and do not hammer or foot the battery!
- Do not hit, throw or subject the battery to mechanical shocks!
- Direct soldering of battery terminals is prohibited!
- It is prohibited to disassemble the battery in any way!
- It is prohibited to place the battery in a microwave oven or pressure vessel!
- Prohibit the use of batteries in combination with primary batteries (e.g. dry cell batteries) or batteries of different capacities, models and varieties!
- Do not use the battery if it emits a strange odor, heat, deformation, discoloration or any other abnormal phenomenon; if the battery is in use or charging, it should be immediately removed from the appliance or charger and stop using it!
1.2. Environmental and Personal Safety
- Do not put the battery in an extremely hot environment, which will affect the performance of the battery, shorten the service life of the battery; and even cause safety accidents.
- If the electrolyte gets into your eyes after a battery leak, do not rub, flush with water, and seek assistance immediately. If left untreated, the eyes will be damaged.

Attention and Warning: Read, understand, and follow all instructions. Use appropriate safety equipment and insulated tools. Installation by professionals. Use cables of appropriate specifications. Ensure installation complies with local and national electrical regulations. Ensure system is properly grounded. Install battery in a safe temperature range. Clean with a suitable cleaning agent. Ensure fasteners are tight. Do not crush, puncture, hit, throw. Do not place near corrosive chemicals. Do not store near radiators or heat sources. Do not immerse. Risks of fire, explosion, burns. Be careful when lifting, battery is heavy. Stay away from damaged batteries. If battery leaks, liquid contacts eyes/skin, rinse and seek medical attention. If fire occurs, use dry powder fire extinguishers.
⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
2. Product Overview
The DATOUBOSS Removable Touch Screen LiFePO4 Battery is an all-in-one integrated battery system designed for solar energy storage and off-grid power supply. It features a compact design, a user-friendly touch screen interface, and robust construction for reliable energy storage in residential, commercial, and industrial applications.
2.1. Key Features
- Intelligent Touch Screen: Real-time monitoring of battery status, energy consumption, and system performance.
- Modular Design: Easy installation and maintenance with plug-and-play compatibility.
- High Energy Density: 15kWh (300Ah) capacity, supporting long-term energy storage for critical loads.
- PV Integration: Optimized for solar systems with max PV input power up to 8,500W and voltage range 360-430Vdc.
- Fast Charging: Supports up to 120A charging current for quick replenishment.
- Wide Input Compatibility: Rated input voltage 220/230/240VAC, 50/60Hz.
- Robust Construction: Durable housing with a packed weight of 148kg, built for industrial-grade reliability.

Main product image highlighting key specifications: 51.2V 300Ah 15KWH, 8500W Max PV Input Power, 360~430Vdc Best Voltage, 500Vdc Max PV Input Voltage, 120A Max PV Charge Current, 220/230/240VAC Rated Input Voltage, 50/60HZ Frequency, 148kg Packed Weight.

The integrated touch screen displays real-time energy flow, including solar input, grid connection, and power to the home, along with battery charge percentage and voltage.
2.2. Physical Dimensions and Weight

Front and side view of the DATOUBOSS battery system, indicating dimensions of 36.2 inches (height), 25.4 inches (width), and 10.8 inches (depth).
- Item Weight: 148kg
- Package Dimensions (L x W x H): 98cm x 46cm x 28cm
3. Package Contents
Inspect the unit before installation. Make sure there is no damage in the package. You should receive the following items:
- Mounting Bracket × 1
- Screws × 3
- Finished home energy storage battery pack × 1
- Wall-Mount Brackets × 2
- Positive Battery Connection Cable × 1
- Negative Battery Connection Cable × 1
- Communication cable × 1
- Screws × 8
- Instruction manual × 1

Diagram illustrating the components included in the product packaging.
4. Installation and Setup
4.1. Unpacking and Inspection
Carefully unpack the product and verify that all components listed in the 'Package Contents' section are present and undamaged. If any items are missing or damaged, contact customer support immediately.
4.2. Preparation (Mounting Location)
Before selecting a mounting location, consider the following:
- Do not install the battery pack on flammable building materials.
- Mount on a sturdy surface.
- Mount the battery pack at eye level so that the LCD display can be read at all times.
- Ambient temperature should be between 0°C and 55°C to ensure optimal operation.
- Vertical mounting on a wall is recommended.
- Ensure adequate heat dissipation and enough room to remove wires. Maintain at least 20cm clearance on all sides.
4.3. Equipment Installation
- Use expansion screws to fix the mounting bracket securely to the wall.
- Attach the wall-mount brackets to the back case of the machine using short screws.
- Carefully hang the unit onto the fixed wall bracket.
Note: Suitable for installation on concrete or other non-flammable surfaces only.
4.4. Wiring Diagrams and Connections
Before connecting any wiring, ensure the system is powered off and all safety precautions are followed. Remove the bottom cover by unscrewing the two screws as shown in the diagram below.

Schematic diagram illustrating the connections for load output, photovoltaic input, and grid input to the all-in-one battery system.

Detailed view of the connection panel, indicating the positions for Load output air switch, Photovoltaic input air switch, Load output, Photovoltaic input, Grid input, Inverter switch, and Battery switch.

Wiring diagram for the stacked inverter integrated 15°+6.2KW system, detailing connections for load output, grid input, and solar panels (PV+ and PV-). Ensure installation complies with applicable local and national electrical regulations.
4.5. DIP Switch Configuration (for Parallel Operation)
When multiple battery packs are connected in parallel, use the DIP address function. If DIP switch 6 is set to ON, the DIP switches are used to set unique addresses for each pack. Otherwise, the system uses default automatic addressing.

DIP switch diagram and table for configuring unique addresses for each battery pack in a parallel setup.
4.6. Parallel Wiring Instructions
The following illustrations show the interface connections for parallel wiring.

Interface illustration for parallel wiring, detailing RS485 CAN, RS232, and ADD-IN/ADD-OUT ports for inverter and upper computer interfaces.
Interface Definition Table:
| Interfaces | RS485 | CAN | RS232 | RS485 | ||||
|---|---|---|---|---|---|---|---|---|
| Functional Description | Connection to host computer or inverter | Connection to host computer or inverter | Parallel communication | Parallel communication | ||||
| PIN | Description | PIN | Description | PIN | Description | PIN | Description | |
| 1、8 | RS485-B1 | 1、8 | NC | 1、2、6 | NC | 1、8 | RS485-B2 | |
| 2、7 | RS485-A1 | 2、7 | NC | 3 | TX | 2、7 | RS485-A2 | |
| 4 | NC | 4 | CANH1 | 4 | RX | 4 | NC | |
| 5 | NC | 5 | CANH1 | 5 | GND | 5 | NC(L)/OUT(R) | |
| 3、6 | GND | 3、6 | GND | 3、6 | GND | 3、6 | GND | |
5. Operation
5.1. Function Introduction (Ports and Indicators)
The unit features various ports and indicators for monitoring and control.
| Serial Number | Functionality | Description |
|---|---|---|
| ① | Switching Indicator | Switch Status |
| ② | Reset Switch | Reboot or shutdown when pressed |
| ③ | DIP Address | Address selection for parallel or communication |
| ④ | Dry contact | Normally open or normally closed signal drive relay |
| ⑤ | RS485 | External communication |
| ⑥ | CAN | External communication |
| ⑦ | RS232 | Reserve communication port |
| ⑧ | RS485、RS485 | Internal communication or battery parallel use |
| ⑨ | Operation Indicator | Operational status |
| ⑩ | Alarm Indicator | Alerts |
| ⑪ | Battery Indicator | Remaining capacity display |
| ⑫ | Battery Positive | Positive battery terminal |
| ⑬ | Battery Negative | Negative battery terminal |
| ⑭ | Push button Switch | Control switch on/off |
| ⑮ | Air Switch | Disconnect input and output |
5.2. Color Touch Screen Description
5.2.1. Starting Screen
Upon power-on, the system will display a starting screen indicating initialization. Please wait for the system to load.
5.2.2. Main Screen
The main page displays parallel statistics such as average SOC, maximum and minimum battery voltage, maximum and minimum battery temperature, average battery voltage and total system current, average remaining system power, operating power, MOS charging and discharging status, and language switching functions.

The touch screen main interface provides detailed information on the inverter and photovoltaic system, including machine type, version, temperature, MPPT tracking range, and power generation data.

The touch screen also displays detailed battery information, including battery type, BMS communication status, voltage, current, bus voltage, and lithium battery activation status, as well as BMS protocol and SOC.
5.2.3. Language Settings
The system supports switching between English and Chinese. The language switching button is located at the top right corner of the homepage.
5.2.4. Slave Devices Page
This page displays version selection, battery level, SOH data, battery voltage and current, charge/discharge status, fault indication, battery level and temperature data of the Slave Device, ambient temperature, and MOS temperature data. The background color indicates the status of the slave controller (blue for selected, green for online, white for offline).
5.2.5. Parameter Setting
In the parameter setting page, you can configure various parameters such as battery voltage, undervoltage, ambient temperature, overvoltage differential, charging/discharging overcurrent, MOS high temperature, and SOC high temperature parameters.
5.2.6. Protocol Setting
The system supports various communication protocols. For CAN protocol, it supports Pylon, Growatt, Goodwe, Sofarsolar, Victron, Voltronic, Ixp, Deye, Ginlong, SMA. For RS485 protocol, it supports Pylon, Growatt, Voltronic, Ixp, Deye, Invent, Srna.
5.2.7. User Login
Access to certain settings may require a password (default: 666888).
5.3. LED Display Description
The LED indicators provide visual feedback on the system's status.
| State of System | Event | ON/OFF (LED9) | RUN (LED8) | ALARM (LED7) | SOC (LED6~1) | Instruction | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| LED6 | LED5 | LED4 | LED3 | LED2 | LED1 | ||||||
| Power off | Sleep | OFF | OFF | OFF | OFF | OFF | OFF | OFF | OFF | OFF | All LEDs turn off |
| Static state | Normal | ON | Flash1 | OFF | / | / | |||||
| Alarm | ON | Flash1 | Flash3 | / | Refer to table 2 | ||||||
| Charging | Normal | OFF | ON | OFF | / | The over-voltage alarm does not flash | |||||
| OV protect | ON | ON | OFF | ON | ON | ON | ON | ON | ON | / | |
| Temperature, Over-current, fail-safe | ON | OFF | ON | OFF | OFF | OFF | OFF | OFF | OFF | / | |
| Discharging | UV protect | OFF | ON | Flash3 | / | Refer to table 2 | |||||
| Normal | ON | Flash3 | Flash3 | / | / | ||||||
| Over-current, short circuit, temperature, fail-safe | ON | OFF | ON | OFF | OFF | OFF | OFF | OFF | OFF | / | |
SOC Display Description:
| State | Charging LED | Discharging LED | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SOC(%) | LED6 | LED5 | LED4 | LED3 | LED2 | LED1 | LED6 | LED5 | LED4 | LED3 | LED2 | LED1 |
| 0~16.6% | OFF | OFF | OFF | OFF | OFF | Flash2 | OFF | OFF | OFF | OFF | ON | ON |
| 16.6~33.2% | OFF | OFF | OFF | OFF | Flash2 | ON | OFF | OFF | OFF | ON | ON | ON |
| 33.2~49.8% | OFF | OFF | OFF | Flash2 | ON | ON | OFF | OFF | ON | ON | ON | ON |
| 49.8~66.4% | OFF | OFF | Flash2 | ON | ON | ON | OFF | ON | ON | ON | ON | ON |
| 66.4~83.0% | OFF | Flash2 | ON | ON | ON | ON | ON | ON | ON | ON | ON | ON |
| 83.0~100% | Flash2 | ON | ON | ON | ON | ON | ON | ON | ON | ON | ON | ON |
LED Flash Description:
| Flash Mode | ON | OFF |
|---|---|---|
| Flash1 | 0.25S | 3.75S |
| Flash2 | 0.5S | 0.5S |
| Flash3 | 0.5S | 1.5S |
5.4. Self-Locking Switch
- When the BMS is in hibernation state, after closing the self-lock switch, the protection board is powered on, and the LED indicators light up successively from "LED1" for 0.5 seconds.
- When the BMS is active, turn off the self-locking switch and wait for 1-3 seconds before the system enters the power-off state.
5.5. Reset Key Switch
- When the BMS is in hibernation state, press the reset key (1S) and release it. The protection board is activated, and the LED indicators light up successively from "LED1" for 0.5 seconds.
- When the BMS is active, press the button (3 to 6S), and the LED indicator will turn on for 0.5 seconds from the lowest power indicator. When released, the system will go to sleep.
- When the BMS is in the active state, press the button (6-10s) and release it. The protection board is reset, and the LED indicator is displayed according to the current power.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your DATOUBOSS battery system.
- Cleaning: Clean the battery with a suitable cleaning agent (such as a clean dry cloth). Do not use any spray cleaner, liquid, aerosol, or any type of solvent to clean or paint.
- Fasteners: Ensure that all fasteners are tightened correctly.
- Environmental Conditions: Maintain the battery within a safe temperature range (0°C to 55°C) for stable operation. Avoid extremely hot environments.
- Battery Health: Monitor the battery cycle life through the touch screen interface. The battery is designed for >8000 cycles at 25°C and >3000 cycles at 45°C (70% SOH).
- Storage: If storing the battery for an extended period, ensure it is not fully discharged. The recommended amount of electricity shipped is 40% to 60%.
7. Troubleshooting
7.1. Buzzer Action Description
- When a fault occurs, the buzzer emits a sound for 0.25 seconds every 1 second.
- When protecting, the buzzer chirps for 0.25 seconds every 2 seconds (except for over and under voltage protection).
- When an alarm is generated, the alarm sounds for 0.25 seconds every 3 seconds (except for an over-voltage or under-voltage alarm).
7.2. Fault Codes and Accident Handling
The system provides fault codes and handling procedures to assist in diagnosing and resolving issues.

Table detailing various fault codes, their explanations, and recommended solutions.

Table outlining common problems, their LCD display/LED/buzzer indications, possible reasons, and steps to resolve them.
8. Specifications
The following table provides detailed technical parameters for the DATOUBOSS LFP48-300-FSD battery system.
| Project | Specification |
|---|---|
| Model | LFP48-300-FSD |
| Battery Capacity | 15.36kWh |
| Battery Internal Resistance | < 10mΩ |
| Single Battery Capacity | 300Ah |
| Nominal Operating Voltage | 51.2V |
| Maximum Output Current | 210A |
| Standard Input Current | 150A (Max 210A) |
| Overpressure Protection | 58.4V |
| Overcharge Protection Recovery | 54.0V |
| Overdischarge Protection | 43.2V |
| Overdischarge Protection Recovery (within 30 seconds) | 48V (tunable) |
| Charging Over-Temperature Protection | 50°C |
| Charge over-temperature protection recovery | 45°C (tunable) |
| Charging Low Temperature Protection | 0°C (tunable) |
| Charge Cryoprotection Recovery | 5°C |
| Discharge Over-Temperature Protection | 50°C |
| Discharge Over-Temperature Protection Recovery | 45°C |
| Low Temperature Protection | -15°C |
| Low Temperature Protection Recovery | -10°C |
| Charging Overcurrent | 215A |
| Discharge Overcurrent Protection | 215A |
| Short Circuit Protection | Recovery methods: "Charge Removal, Load Removal" |
| Amount Of Electricity Shipped | 40% to 60% |
| Equalization | Passive equilibrium |
| Power Off Self-Consumption | < 300uA |
| Battery Cycle Life | 25°C: > 8000 Cycle, 70% SOH |
| 45°C: > 3000 Cycle, 70% SOH | |
| Communication Protocols | RS232, RS485, CAN |
| Sizes (L x W x H) | 453x260x879mm |
| Weight | 110kg |
| Item Type | Car Batteries |
| Output Voltage | 15KWh |
| Shell material | iron (metal) |
| Nominal capacity | 300Ah |
| PV charging mode | MPPT |
| PV input power max. | 8500W |
| MPPT tracking range | 60-500Vdc |
| Optimum Voltage | 360~430Vdc |
| Max PV input voltage | 500Vdc |
| Max PV input current | 27A |
| PV charging current max. | 120A |
| AC charging current max. | 100A |
| Charging current max. | 120A |
| Input Format | L+N+PE |
| Rated Input Voltage | 220/230/240VAC |
| Frequency range | 50Hz/60Hz (adaptive) |
| Output voltage | 220/230/240VAC ±5% |
9. User Tips
- Optimal Placement: For best performance and longevity, ensure the battery is installed in a well-ventilated area, away from direct sunlight or extreme temperatures.
- Regular Monitoring: Utilize the touch screen interface to regularly check battery SOC, voltage, and temperature. This helps in proactive maintenance and identifying potential issues early.
- Parallel System Configuration: When setting up multiple units in parallel, double-check the DIP switch settings for correct addressing to ensure seamless communication and operation.
- Cable Management: Use appropriate cable gauges for all connections (PV, AC input/output, battery) and ensure they are securely fastened to prevent loose connections and potential hazards.
- Firmware Updates: Periodically check the manufacturer's website or contact support for any available firmware updates to ensure your system benefits from the latest features and performance improvements.
10. Warranty and Support
Please read the instructions carefully and keep them in a safe place. This product will be repaired if it malfunctions during the warranty period for normal use in accordance with the operating instructions. The parts replaced during the warranty period are the property of the company.
10.1. Warranty Conditions
For replacement or warranty, please send this warranty card together with the product.
No free repairs will be made during the warranty period if any of the following conditions apply:
- Damage caused by failure to comply with the requirements of the instruction manual for use, maintenance and repair, or the use of non-original parts.
- Failure or damage caused by improper storage and custody (e.g., battery failure due to not recharging the product for a long period of time).
- Failure or damage caused by the use of power supply equipment and load rated equipment not within the specified voltage range.
- Failure or damage caused by private repair, dismantling or modification.
- Damage to the surface coating and exterior is not covered by the warranty.
- Product outer packaging and product accessories are not covered by the warranty.
- Torn, altered or unrecognizable product labels, seals and serial numbers (SN).
- Failure or damage due to force majeure (e.g., natural disasters such as floods, fires, explosions, lightning, earthquakes and storms, as well as social events such as wars and disturbances).
This manual is for use only in this sales area; the final interpretation right belongs to the company.
Please keep this manual in a safe place as it will not be distributed separately to users.
If the name of the distributor is not written or stamped, ask the distributor from whom you purchased the product for proof of the date of purchase and the name of the distributor, and issue a receipt to the distributor. If you do not have such proof, please contact your dealer or the company from which you purchased the product. If you purchased the product from our online store, please be sure to provide proof of the date of purchase, such as an invoice, order number, or a screen shot of your order history.
10.2. Reimbursable Service Warranty
If the product does not meet the warranty conditions and requires service, the company will calculate appropriate repair costs based on parts and labor. A repair quote will be provided, and upon your consent and payment, repair services will be rendered.
10.3. Additional Resources
A detailed user manual in PDF format is available for download. You can view it here: DATOUBOSS LFP48-300-FSD User Manual (PDF)





