1. Introduction
This manual provides detailed instructions for the safe and efficient operation, installation, and maintenance of your Tewaycell 51.2V 600Ah 30KWh LiFePO4 Home Energy Storage System. Please read this manual thoroughly before installation and use, and keep it for future reference.
2. Key Features
- Utilizes high-safety lithium iron phosphate (LiFePO4) core technology.
- Designed for over 6000 cycles with 80% Depth of Discharge (DOD) under standard conditions.
- High integrated analog front end and isolated power circuit for enhanced performance.
- Integrated serial port IC with high voltage accuracy (≤ 20mV) and high current accuracy (≤ 2% @ FS).
- Features 4-way battery temperature detection (≤ 2°C), State of Charge (SOC) estimation, and State of Health (SOH) estimation functions.
- Includes short circuit protection, adjustable overcurrent protection, multiple sleep and wake-up modes, and low power consumption.
- Dual RS485 communication, parameter adjustable setting, buzzer alarm function, LED status indication, and charging equalization function.
- Wide operating temperature range: -20°C to 60°C.
- Supports parallel application expansion for up to 15 units, allowing capacity expansion up to 450kWh.
- Compatible with Pace EX App for WiFi monitoring and control.
- Optional features include a fire extinguishing device and active balancing for cell consistency.
3. Technical Specifications
| Parameter | TW-MB51400-200A-HWB | TW-MB51600-200A-HWB | TW-MB51400-300A-HWB | TW-MB51600-300A-HWB |
|---|---|---|---|---|
| Nominal Capacity | 400AH | 600AH | 400AH | 600AH |
| Nominal Voltage | 51.2V | |||
| Charging Voltage | 56.8-57.6V | |||
| Operating Voltage | 43.2V-58.4V | |||
| Charging Standard Current | 0.2C 80A | 0.2C 120A | 0.2C 80A | 0.2C 120A |
| Maximum Charging Current | 200A | 300A | ||
| Maximum Discharge Current | 200A | 300A | ||
| Standard Charging Mode | At 25°C, charge to 58.4V with constant current 0.205A, then constant voltage 58.4V until current ≤ 0.02C 5A. | |||
| Line Joint | 250A Self-Locking Fitting Quick Release Connector | |||
| Net Weight Approx. | 192.5KG | 238KG | 192.5KG | 238KG |
| Dimensions (L*W*H) | 500*700*730mm | |||
| Battery Type | LiFePO4 | |||
| System Type | Mobile ESS | |||
| Output Power Range | 30-40KW | |||
| Communication Port | CAN, RS-232, RS485 | |||
| Grid Connection | Off grid | |||
| Life Cycle | 6000 cycles | |||
| WiFi Function | Pace EX APP | |||
4. Product Components
The Tewaycell ESS unit includes the following key components:
- Display: Front-mounted screen for monitoring system status and settings.
- Air Switch (BAT SWITCH): Main circuit breaker for the battery.
- Positive and Negative Pole Connectors: For connecting to the inverter or other system components.
- Balance Switch (Optional): For battery cell balancing.
- Communication Board: Houses various communication ports and indicators.
- RST (Reset): System reset button.
- ADS (Address Switch): DIP switches for setting communication addresses.
- DCT (Dry Contact): Dry contact terminals.
- RS485, CAN, RS232, RS485/RS485 Ports: For various communication protocols with inverters and other devices.
- ON/OFF Indicator: Shows power status.
- RUN/ALM Indicator: Indicates system operation or alarm status.
- SOC Indicator: Displays State of Charge.
- Power ON/OFF Switch: Main power control for the unit.
- Active Balancer: (Optional) Reduces differential pressure on cells for stable operation.
- Comprehensive Protection BMS: (Battery Management System) Provides passive balancing, overcurrent, overvoltage, and temperature protection.
- Fire Extinguisher: (Optional) Automatic fire extinguishing device to prevent battery fire.
5. Installation and Setup
5.1 Initial Inspection
Before installation, carefully inspect the packaging and the ESS unit for any signs of damage. Ensure all components listed in the packing list are present.
5.2 Electrical Connections
- Power Off: Ensure all connected systems (inverter, solar panels) are powered off before making any connections.
- Connectors: Use the provided 250A Self-Locking Fitting Quick Release Connectors for secure power connections. Connect the positive (+) terminal of the ESS to the positive input of your inverter, and the negative (-) terminal to the negative input.
- Communication: Connect the appropriate communication cables (RS485, CAN, RS232) between the ESS communication board and your inverter or monitoring system. Refer to your inverter's manual for specific communication port requirements.
- Grounding: Ensure the ESS unit is properly grounded according to local electrical codes.
- Air Switch: Ensure the "BAT SWITCH" is in the OFF position during connection.
5.3 Parallel Connection (Optional)
The Tewaycell ESS supports parallel connection of up to 15 units to expand capacity. When connecting multiple batteries in parallel, follow the wiring diagram carefully to ensure correct and safe operation. Each battery unit should be connected to a common busbar or distribution block, and communication lines should be daisy-chained or connected to a central communication hub as per the diagram.
5.4 Power On
- After all connections are secure, switch the "BAT SWITCH" to the ON position.
- Turn on the main "POWER" switch on the communication board.
- The ON/OFF indicator LED should illuminate, and the BMS display will power on.
6. Operation
6.1 BMS Display Navigation
The front display provides real-time information and allows for parameter adjustments. Use the MENU, ENTER, DOWN, and ESC buttons to navigate:
- MENU: Access the main menu or move between options.
- ENTER: Select an option or confirm a setting.
- DOWN: Scroll down through menu options or decrease values.
- ESC: Exit a menu or cancel an operation.
Key information accessible via the display includes:
- Pack Voltage (PackV)
- Current (Im)
- Temperature (PCB_T, ENV_T)
- Cell Voltage
- BMS Status (e.g., Idle)
6.2 Remote Monitoring (Pace EX APP)
The ESS unit supports remote monitoring and control via the Pace EX APP. Download the app and follow the in-app instructions to connect your device using the Bluetooth/WiFi QR code located near the positive terminal. This allows for convenient monitoring of battery status and performance from your smartphone or tablet.
7. Maintenance
- Regular Inspection: Periodically check all electrical connections for tightness and signs of corrosion.
- Cleaning: Keep the exterior of the ESS unit clean and free from dust and debris. Do not use abrasive cleaners or solvents.
- Ventilation: Ensure adequate airflow around the unit to prevent overheating. Do not block ventilation openings.
- Firmware Updates: Check for and apply any available firmware updates for the BMS via the Pace EX APP to ensure optimal performance and security.
- Optional Fire Extinguisher: If equipped, regularly check the status of the optional fire extinguishing device as per its specific instructions.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| ESS not powering on | Main power switch off, BAT SWITCH off, loose connections. | Ensure both BAT SWITCH and POWER switch are ON. Check all power connections. |
| No communication with inverter | Incorrect communication cable, wrong port, incorrect DIP switch settings (ADS). | Verify communication cable type and connection. Check DIP switch settings for ADS. Consult inverter manual for compatibility. |
| Alarm indicator (ALM) illuminated | Overvoltage, undervoltage, overcurrent, high/low temperature. | Check BMS display for specific alarm codes. Address the underlying issue (e.g., reduce load, check charging parameters, ensure proper ventilation). If persistent, contact support. |
| Reduced capacity or performance | Aging cells, improper charging/discharging, environmental factors. | Ensure charging parameters are within specifications. Monitor cell voltages via BMS display. If issues persist, contact support. |
9. User Tips
- Inverter Compatibility: When integrating the Tewaycell ESS with an inverter, always ensure that the BMS and inverter are compatible. If unsure, consult with the seller or a qualified technician to ensure proper matching and avoid operational issues.
- DIY Assembly: While the battery pack can be assembled by yourself, it is recommended to seek professional assistance or verify compatibility if you are concerned about the interaction between the BMS and your inverter.
10. Warranty and Support
The Tewaycell 51.2V 600Ah 30KWh ESS comes with an 8-10 year warranty. For warranty claims or technical support, please contact your vendor or the manufacturer directly. Ensure you have your product model and serial number available.
Supported Inverter Brands for communication include: Growatt, Deye, Goodwe, Voltronic power, Sofar, VICTRON, Solis, Megarevo, SRNE.
11. Frequently Asked Questions (FAQ)
- Q: Do you have MOQ?
- A: No, there is no minimum order quantity. Samples are acceptable. Larger quantities may qualify for better pricing.
- Q: What's the delivery time?
- A: Generally, delivery is within 7-15 days. We arrange shipment as quickly as possible.
- Q: What is your term of payment?
- A: We accept trade assurance, T/T, Paypal, L/C, and other payment methods.
- Q: Can I make up the battery pack by myself?
- A: Yes, you can perform DIY assembly. If you are concerned about compatibility with the BMS and inverter, we can provide these components and ensure they are matched.
- Q: Which shipping method do you usually take?
- A: We typically use Train/Sea DDP (Delivered Duty Paid) or Express. We can also ship with your preferred shipping agent.
