1. Introduction
Thank you for choosing the SJY-D floor-standing energy storage battery. This manual provides essential information for the safe and efficient operation, installation, and maintenance of your battery system. Please read it thoroughly before use.
1.1 Range of Application
This manual is applicable to SJY-D floor-standing energy storage battery products, specifically models SJY-D-48200 (51.2V200AH) and SJY-D-48300 (51.2V300AH).
1.2 Meaning of Abbreviations
| Symbol | Description | Main Connector | Function |
|---|---|---|---|
| + | I/O positive | Dry contact | |
| - | I/O negative electrode | RUM | Status light |
| NO/OFF | Start button | ALM | Trouble light |
| CAN | Inverter CAN communicate | MENU | Function menu |
| RS485 | Inverter RS-485 communication | ENTER | Ok button |
| RESET | Reset button | DOWN | Select button |
| RS232 | Upper computer communication | ESC | Back |
| RS485-A | Multiple batteries are connected to the communication port | SOC | Current battery capacity |
| RS485-B | Ground connection | ||
| ADS | Parallel dip switch | WIFI | Battery WIFI antenna |
2. Safety Precautions
Always observe safety precautions to prevent personal injury or damage to the product. This section outlines critical safety information.
2.1 Safety Symbols
Familiarize yourself with the following symbols used in this manual and on the product:
- DANGER! Indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injuries.
- CAUTION! Indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injuries.
- ATTENTION! Indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injuries.
- NOTICE: Warning information about device or environment safety. If not avoided, equipment damage, data loss, performance degradation or other unanticipated results may be resulted in. The "NOTICE" does not involve any personal injuries.
- i Observe enclosed documentation.
- CE CE certification.
- RoHS COMPLIANT Comply with RoHS standard.
- Waste Disposal Symbol The energy storage system should not be disposed together with household waste.
2.2 General Safety Guidelines
- The product should be used in compliance with local standards, laws, and regulations.
- Do not disassemble or modify the product without authorization.
- Do not operate the device under conditions outside the specified operating environment.
- Wear appropriate personal protective equipment when operating the device.
- Ensure reliable grounding before use.
- Do not open or damage the battery; electrolyte is harmful.
- Do not place items on top of the device or block ventilation.
- Keep flammable items away from the device.
- Do not short-circuit battery terminals.
- Remove metal objects (watches, rings) when working with the battery.
- Use tools with insulated handles.
- Wear rubber gloves and shoes.
- Disconnect charging power supply before connecting/disconnecting battery terminals.
- Do not clean electrical components with water or detergent.
- Do not stand, lean, or sit on the device.
2.3 Personnel Requirements
- Installation and maintenance personnel must be trained and understand all safety precautions.
- Only qualified professionals or trained personnel are allowed to install, operate, and maintain the device.
- Personnel must have special operation qualifications required by local regulations.
2.4 Electrical Safety
- Ensure the device is not damaged before electrical connections.
- Do not install or remove power cables while the power is on.
- All electrical connections must meet local electrical standards.
- Use special insulating tools for high-voltage operations.
- Ensure proper grounding. The protective grounding wire must be installed first and removed last.
2.5 Automatic Fire Extinguishing Device
The battery system includes an automatic fire extinguishing device that triggers upon fire detection. It rapidly releases inert gases to suppress combustion, effective against solid, liquid, gas, and electrical fires.
Image: Integrated gas fire extinguishing device for rapid fire suppression.
3. Product Specifications
The SJY 15kWh LiFePO4 Solar Home Battery is designed for high performance and long service life, featuring a modular structure and an intelligent BMS.
| Attribute | Specification |
|---|---|
| Model No. | LFP-51.2V300Ah |
| Rated Voltage | 51.2V |
| Nominal Capacity | 300Ah |
| Rated Energy | 15.36kWh |
| Operation Voltage Range | 44-58.4V |
| Max. Charging Voltage | 58.4V |
| Max. Charging/Discharging Current | 200A |
| Peak Discharging Current | 210A (3S) |
| Life Time (25°C) | 15 years |
| Life Cycles (25°C) | 10000 Cycles |
| Storage Time/Temperature | 5 months @ 25°C; 3 months @ 35°C; 1 month @ 45°C |
| Operation Temperature | -20°C to 60°C @60+/-25% Relative Humidity |
| Storage Temperature | 0°C to 45°C @60+/-25% Relative Humidity |
| Battery Standard | IEC62619, UN38.3, ROHS, CE-EMC |
| Enclosure Protection Rating | IP55 |
| Dimensions (L*W*H) | 800*270*390mm |
| Weight | 126.5kg |
| Cooling Method | Natural cooling |
| Communication Interfaces | CAN/RS485 |
| Max. Number of Parallel Units | 15 |
Image: Product with key specifications highlighted.
Image: Front and side views of the battery with dimensions and port locations.
4. System Installation
Proper installation is crucial for the safety and performance of your energy storage system.
4.1 Inspections Before Installation
- Outer Package Inspection: Before opening, check for visible damage (holes, cracks). If any abnormality is found, do not open and contact customer support.
- Deliverables Inspection: After opening, verify all items are present and undamaged. Contact customer support if anything is missing or damaged.
| NO. | Item | Quantity | Specification |
|---|---|---|---|
| 1 | Battery Pack | 1 | 51.2V, 15.36kWh |
| 2 | Instruction manual | 1 | / |
| 3 | Power Cable | 1 | 1m |
| 4 | WIFI antenna | 1 | / |
| 5 | Signal cable | 1 | RJ45, 1m |
4.2 Preparation of Tools and Meters
Ensure you have the necessary tools and personal protective equipment before starting installation.
4.3 Selection of Installation Location
- Do not install in areas with flammable or explosive materials.
- Avoid areas with salt damage (within 500m of shore or affected by sea breezes).
- Install in a location inaccessible to children.
- The energy storage unit cannot be installed forwardly, horizontally, inversely, backwardly, or sideways.
- When drilling, wear goggles and protective gloves, shield the device from debris, and clean up thoroughly.
- When handling heavy objects, be prepared to bear loads to avoid injury.
4.4 Installation Space Requirements
For floor mounting, ensure the battery is placed on a smooth, solid surface. Maintain a distance of 150-300mm between batteries and 200-500mm between the battery and the inverter.
Image: Battery features including Smart BMS, Bluetooth, Wi-Fi, and support for up to 32 batteries in parallel.
5. Electrical Connection
All electrical connections must be performed by professional electrical technicians wearing personal protective equipment. Ensure all switches are in the "OFF" state before connecting to prevent electric shock.
5.1 Preparation of Cables
| No. | Cables | Description | Specification | Source |
|---|---|---|---|---|
| 1 | Power Cable | Power cable between the storage battery and inverter | Provided with product | |
| 2 | Signal line | Battery parallel communication line | Provided with product | |
| 3 | Signal line | Signal cable between battery modules or between battery and inverter | Prepare by user | |
| 4 | AC input line | Cable between AC input and power module | Cable diameter 10mm2/7AWG | Prepare by user |
| 5 | AC output line | Cable between AC output and power module | Cable diameter 10mm2/7AWG | Prepare by user |
5.2 Electrical Connection of One Battery Module
When connecting a single battery module, ensure the battery switch is OFF and the indicator light is OFF.
Image: Illustration of multiple batteries connected in parallel, supporting up to 32 units.
5.2.1 Connecting Signal Line
The signal line connects the RS485-Inverter interface of the battery module to the inverter. Some inverters may require connection to the RS485-2 interface.
5.2.2 Energy Storage Battery Module Address Setting
For a single battery, set the address to 0. Some inverters may require it to be set to 1.
5.3 Connecting Power Cord
If two batteries are used in parallel, connect the power cord of each battery. For multiple batteries, a bus bar is required.
Image: Inverter compatibility with CAN/RS485 protocols, showing various supported brands.
6. System Debugging (Operating)
After installation, follow these steps to power on and debug the system.
6.1 Inspections Before Power-On
| No. | Inspection Items | Acceptance criteria |
|---|---|---|
| 1 | Energy storage installed in place | Installation is correct, secure, and reliable. |
| 2 | Installation environment meets requirements | Installation space is reasonable, environment is clean and tidy. |
| 3 | Power cord correctly connected | Positive and negative terminals are connected correctly. |
| 4 | Signal line correctly connected | Signal line is connected reliably, no wrong position. |
| 5 | Grounding is reliable | Grounding wire is correctly and reliably connected. |
| 6 | Switch of energy storage battery module is off | All switches connected to the energy storage are in the "OFF" state. |
6.2 Power-On of Battery Module
After connecting the battery to the inverter, power on in the following order:
- Turn on the breaker switch(es). If multiple battery modules, turn on all breaker switches.
- Turn on the battery switch button. The battery will start to work. If multiple modules, turn on each power switch one by one according to the address sequence.
6.3 System Status Indication (LCD Screen)
The LCD screen provides real-time information about the battery's operating status. The main menu includes:
- Pack Info: View voltage, current, temperature, and other data.
- Pack Status: View protection status, protection times, and protection flags.
- Pack Para: Set protection parameters (currently not open for user modification).
- Pack Set: Set host RS485 or CAN protocol for BMS.
Image: Mobile app interface showing battery data, including voltage, current, and temperature.
6.4 Battery Communication Protocol
The battery supports various inverter communication protocols via CAN and RS485. The system is continuously updated for compatibility.
| Inverter Brand | Agreement Name | Communication Mode |
|---|---|---|
| PYLON | PYLON low voltage protocol RS485 V3.5 | RS485-9600 |
| Goodwe | Goodwe-CAN-V1.7-SolarInverterFamily-EN | CANBUS-500K |
| Growatt | Growatt BMS CAN-Bus-protocol-low-voltage-V1.05 | CANBUS-500K |
| Solis | Solis EH1P6K (implied from Q&A) | Check inverter manual for protocol |
| Victron | CAN-bus_bms_protocol | CANBUS-500K |
| Fox ESS | Fox ESS protocol (implied from Q&A) | Check inverter manual for protocol |
| SRNE | WOW-protocol-SRNE | RS485-9600 |
| Deye | CAN-Bus-protocol-PYLON-v1.3 | CANBUS-500K |
| INVT | XN Inverter and BMS 485 communication protocol | RS485-9600 |
| Voltronic Inverter | Voltronic Inverter and BMS 485 communication protocol | RS485-9600 |
| SOFAR | CAN Description of the BMS Universal Protocol | CANBUS-500K |
| LUX POWER | Luxpowertek Battery CAN Protocol | CANBUS-500K |
7. Mobile App Connection
The SJY battery features smart connectivity via Bluetooth and Wi-Fi for remote monitoring and control.
7.1 Connecting via Bluetooth/Wi-Fi
- Install the WIFI antenna on the side of the battery.
- Download the "JBD Li-ion" app from your mobile app store.
- Open the app and add the device by scanning the QR code on the battery or manually entering its MAC code.
- Select a Wi-Fi network for configuration (supports 2.4GHz band Wi-Fi).
- Once connected, you can view basic parameters and settings in real-time.
Image: Mobile app interface showing battery data, including voltage, current, and temperature.
8. System Maintenance
Regular maintenance ensures the longevity and optimal performance of your energy storage system.
8.1 System Power-Off Procedure
Before any maintenance, ensure the system is safely powered off. Wear protective gloves as residual power and heat may be present.
- Turn off the breaker switch between the inverter and AC output (if installed).
- Turn off the breaker switch between the inverter unit and AC input (if installed).
- Turn off the breaker switch between the inverter unit and the PV string (if installed).
- Turn off the breaker switch between the inverter and battery.
- Turn off the button on all storage battery modules.
8.2 Routine Maintenance Schedule
| Items | Methods | Maintenance Interval |
|---|---|---|
| System cleanliness | Check if the radiator is covered or dirty. | Once every six months to one year. |
| Running status of system | Observe for damage/deformation. Listen for abnormal sounds. Check indicator lights. | Once every six months. |
| Electrical connection | Check for loose/damaged cables, especially where they contact metal surfaces. Check unused input terminals, COM ports, and covers are locked. | Half a year after first debugging/testing, then once every six months to one year. |
8.3 Battery Storage Requirements
- Do not store upside down or on its side.
- Handle with care; avoid damage.
- Ambient temperature: -10°C to 55°C (recommended 20°C to 30°C).
- Relative humidity: 5%RH-80%RH.
- Store in a dry, well-ventilated, and clean area.
- Keep away from corrosive organic solvents, gases, and other substances.
- Avoid direct sunlight.
- Maintain at least two meters distance from heat sources.
- When storing, disconnect the battery from external connections.
8.4 Requirements for Charging of Battery (Long-Term Storage)
For long-term storage (unused for more than 3 months), keep batteries in a dry, cool place with a storage voltage of 51V-53V and ambient temperature of 23±2°C with 45%-75% humidity. Recharge every 3 months to maintain voltage within the specified range.
| Ambient Temperature for Storage | Relative Humidity for Storage Environment | Storage Time | SOC |
|---|---|---|---|
| <-10°C | / | Prohibited | / |
| -10~25°C | 5%~70% | ≤12 months | 30%≤SOC≤60% |
| 25~35°C | ≤6 months | ||
| 35~45°C | ≤3 months | ||
| >45°C | / | Prohibited | / |
8.5 Device Cleaning
Clean the product periodically using a soft, dry cloth or vacuum cleaner to remove dust and stains. Do not use organic solvents, corrosive liquids, or other cleaning products.
9. Troubleshooting
This section provides common faults and their handling methods.
| Fault | Handling Measures |
|---|---|
| Indicator light and LCD does not work | Check if the battery is in sleep mode. If not charging/discharging, it enters sleep mode automatically. Charge the battery if power is low. If unused for a long time, it will sleep and can be used normally after restarting. |
| Battery overcurrent protection fault | Check for short circuit in battery wiring. Check if load power exceeds maximum. |
| Battery cannot be charged | Check if the battery is fully charged. Check if ambient temperature is below -10°C. |
| Communication error with inverter | Check if the communication interface is incorrectly plugged in and wiring is secure. Verify battery address and protocol settings are correct. |
10. User Tips
- Inverter Compatibility: The battery supports CAN and RS485 communication protocols and is compatible with over 20 inverter brands, including Pylontech, Goodwe, Growatt, Victron, SRNE, Deye, INVT, Voltronic, Sofar, and Luxpower. For specific inverter models like Solis EH1P6K or Fox ESS, consult your inverter's manual for compatible communication protocols and settings.
- Parallel Connection: The system supports connecting up to 32 batteries in parallel for increased energy capacity. Ensure proper address setting for each module.
- Monitoring: Utilize the mobile app for real-time monitoring of battery status, voltage, current, and temperature.
11. Warranty and Support
This product is manufactured under strict quality control. Any unauthorized changes to the product's internal parameters or failure to follow the instructions in this manual will invalidate the warranty. For technical support or warranty claims, please contact your seller or the manufacturer directly.
For a complete and detailed user manual, please refer to the official PDF document: SJY-D series Energy Storage Battery User Manual (PDF).
