1. Introduction
This manual provides essential information for the safe and efficient use of your Tewaycell 5KWH All-in-One Powerwall System. This integrated unit features a 51V 100AH LiFePO4 battery pack with a built-in 5KW inverter, designed for household energy storage and solar energy applications. It includes advanced features such as a Smart Battery Management System (BMS) and Maximum Power Point Tracking (MPPT) for optimal performance and longevity.
Figure 1.1: Tewaycell 5KWH All-in-One Powerwall System
2. Safety Information
⚠️ WARNING: KEEP OUT OF REACH OF CHILDREN. In case of ingestion, seek medical attention immediately.
Please read and adhere to all safety warnings to prevent injury or damage to the product.
- Do not charge beyond the maximum charging rate.
- Do not disassemble or modify the battery.
- Do not throw or hit the battery.
- Do not pierce the battery with sharp objects (e.g., nails, knives, pens, electric drills).
- Do not mix with other types of batteries or modular units.
- Do not excessively squeeze the battery during use.
- Do not place the battery in a high temperature greater than 60°C.
- Do not use conductive materials to connect the positive and negative terminals (e.g., metals, wires).
- If the cell temperature exceeds the absolute charging temperature, charging must be stopped immediately.
- Always check the orientation of the positive and negative terminals before making connections.
- Ensure proper insulation when connecting terminals or wires to the battery module to prevent short circuits.
- When storing the battery for extended periods, keep it in a cool, dry place (< 35°C, 30%~50% State of Charge) and perform a charge/discharge cycle every 3 months.
- Avoid placing the battery in direct sunlight or near heat sources.
- Do not wear metal jewelry (such as rings, watches, accessories) when handling the battery unit.
3. Product Overview
The Tewaycell 5KWH All-in-One System integrates a high-capacity LiFePO4 battery with an inverter and charge controller into a single, compact unit. Key features include:
- CAN / RS485 communication interfaces
- Over 6000 charge/discharge cycles
- Built-in Smart Battery Management System (BMS)
- Built-in MPPT solar charge controller
- Built-in 5KW inverter
Figure 3.1: Key Features Overview
3.1 System Application
The system is designed for various applications, including household energy storage, powering appliances, and integrating with solar panels or generators.
Figure 3.2: System Application Diagram showing DC and AC inputs/outputs.
3.2 Battery Management System (BMS)
The integrated Smart BMS provides comprehensive protection for the Grade A LiFePO4 batteries, housed in a stainless steel casing.
Figure 3.3: BMS Protection Features (Overcharge, Overdischarge, Power Display, Temperature Monitoring, Automatic Balancing, Current Protection).
3.3 Fire Extinguishing Function
The battery is equipped with an aerosol fire extinguishing device. In the event of a short circuit leading to fire, this device detects the temperature and automatically activates to extinguish the fire.
Figure 3.4: Internal view showing the aerosol fire extinguishing device.
3.4 Product Dimensions
Figure 3.5: Product dimensions (660mm H x 450mm W x 300mm D) and close-up of display and wheels.
4. Specifications
| Parameter | Value |
|---|---|
| Model | TW-AO-MB51100-5KW |
| Battery Type | LiFePO4 |
| Nominal Capacity | 100AH |
| Battery Energy | 5120WH (5KWH) |
| Voltage | 51.2V |
| Rated Output Power | 5000W |
| Max. Charging & Discharging Current | 100A |
| Rated Output Voltage | 220V / 230Vac (L1 / N / PE single-phase) |
| Load Capacity of Motors | 6HP |
| DOD Designed Life-span | 80% |
| Cycles | >6000 Cycles @ 0.2C / 25℃ Charging / Discharging at 80%DOD, Until 80% Capacity. |
| Switch Time | ＜15ms (typical) |
| Battery Working Voltage Range | 44.8 ～ 57.6V |
| PV INPUT | |
| Solar Charge Type | MPPT |
| Max. Output Power (PV) | 5500W |
| Max. Output Current (PV) | 22A |
| PV Operating Voltage Range | 120-500Vdc |
| MPPT Voltage Range | 120-450Vdc |
| PV Charging Current Range | 0-100A |
| Input Voltage Range (AC) | (170Vac~280Vac) ± 2% / (90Vac-280Vac) ± 2% |
| Frequency Range | 50 / 60Hz |
| Bypass Overload Current | 40A |
| GENERAL PARAMETERS | |
| MPPT Tracking Efficiency | 99.9% |
| Battery Inverter Efficiency | >92.00% |
| Protection Degree | IP20, Indoor Only |
| Operating Temperature Range | -15~55℃, >45℃ derated |
| Charging Temperature Range | 0-45℃ |
| Discharging Temperature Range | -10-45℃ |
| Noise | < 60dB |
| Cooling Method | Force-Air Cooling |
| Inverter Communication Interfaces | RS485 / CAN / USB / Dry contact |
| Battery Communication Interfaces | RS485 / CAN / RS232 |
| External Modules (Optional) | Wi-Fi / GPRS |
| Net Weight | 71.5KG |
| Gross Weight | 95.5 KG |
| Dimensions (L*H*W) | 660×450×300 mm |
| Certification | CE |
5. Setup and Installation
5.1 Unpacking and Package Contents
Carefully unpack the system. The product is shipped in a wooden crate with foam protection. Verify all items are present according to the packing list.
Figure 5.1: Product packaging showing protective foam and wooden crate.
Figure 5.2: Packaging List
| NO. | Item | Quantity |
|---|---|---|
| 1 | All-in-one Machine | 1 |
| 2 | Inverter parallel communication line | 1 |
| 3 | Inverter parallel communication line | 1 |
| 4 | Photovoltaic connectors | 2 |
| 5 | Three hole AC plug | 2 |
| 6 | Disassembly and assembly tools for solar panel connectors | 1 |
| 7 | Operating manual | 1 |
5.2 Connection Ports and Switches
Familiarize yourself with the connection ports and switches located on the unit.
Figure 5.3: Top panel showing PV+, PV-, AC Input, AC Output, and Battery Ports. Bottom panel shows ON/OFF, PV IN, AC IN, AC OUT, and BAT switches.
5.3 Communication Interfaces
The system provides various communication interfaces for both the battery and inverter sections.
Figure 5.4: Diagram of communication interfaces and their functions.
| No. | Interface | Description |
|---|---|---|
| 7 | Reset | System Reset button |
| 8 | DIP Switch | Configuration DIP switches |
| 9 | Dry contact | Dry contact for external control |
| 10 | RS485 | Connect to inverter |
| 11 | CAN | Connect to inverter |
| 12 | RS232 | Serial communication port |
| 13 | RS485 | Connect to PC |
| 14 | LED (ON/OFF) | Power indicator LED |
| 15 | LED (RUN/ALM) | Run/Alarm indicator LED |
| 16 | LED (SOC) | State of Charge indicator LED |
5.4 Wiring Diagram (3-Phase Circuit Example)
For advanced setups involving multiple battery units and inverters in a 3-phase circuit, refer to the following diagram. Ensure all cables are rated for the appropriate current, especially the main cable which needs to support 300A current in this example.
Figure 5.5: Example 3-Phase Circuit Diagram with multiple Tewaycell batteries and 5KW inverters connected via an air switch.
6. Operation
6.1 Front Panel Controls and Displays
The front panel provides buttons for power control and displays for monitoring battery and inverter status.
Figure 6.1: Front panel showing (1) Battery Power button, (2) Inverter Power button, (3) Battery Display, and (4) Inverter Display.
6.2 Monitoring Data
The system allows for detailed monitoring of various parameters through its display interface. This includes pack data, system configuration, cell data, alarm status, and protection status.
Figure 6.2: Examples of monitoring screens for pack data, system configuration, cell data, and alarm/protection status.
7. Maintenance
- Regular Inspection: Periodically check all cable connections for tightness and signs of wear or damage.
- Cleaning: Keep the unit clean and free from dust and debris. Use a dry, soft cloth for cleaning. Do not use liquid cleaners.
- Temperature Monitoring: Ensure the operating environment temperature remains within the specified range (-15~55℃). Avoid prolonged operation above 45℃ without proper derating.
- Long-Term Storage: If the battery will not be used for an extended period, store it in a cool, dry place (< 35°C) with a State of Charge (SOC) between 30% and 50%. Perform a charge and discharge cycle every 3 months to maintain battery health.
- Fire Extinguisher Check: While the system has an automatic fire extinguishing device, ensure the unit is not obstructed and is in good condition.
8. Troubleshooting
If you encounter issues with your Tewaycell 5KWH All-in-One System, consider the following general troubleshooting steps:
- No Power: Check all power connections, including AC input, PV input, and battery connections. Verify that the ON/OFF switches are in the correct position.
- System Alarms: Refer to the monitoring display for specific alarm codes or messages. These often indicate the nature of the problem (e.g., over-voltage, under-voltage, over-temperature).
- Inverter Not Outputting: Check the inverter display for error messages. Ensure the load is within the rated capacity.
- Battery Not Charging: Verify PV input voltage and current are within specifications. Check solar panel connections and ensure no shading.
- Communication Issues: Ensure communication cables are securely connected and configured correctly (e.g., DIP switch settings for RS485/CAN).
For persistent issues, consult the detailed troubleshooting section in the full operating manual (if available) or contact Tewaycell customer support.
9. User Tips
- Optimal Performance: To maximize battery lifespan and efficiency, try to keep the battery within its recommended operating temperature range.
- Regular Monitoring: Utilize the system's monitoring features to keep track of battery health, charge cycles, and overall system performance. This can help identify potential issues early.
- Cable Sizing: When installing, always use appropriately sized cables for all connections, especially for high-current paths like the main output, to prevent overheating and ensure safety.
- Firmware Updates: Check with Tewaycell for any available firmware updates for the inverter or BMS, as these can improve performance and add new features.
10. Warranty and Support
10.1 Warranty
The Tewaycell 5KWH All-in-One System comes with a 5-year warranty, covering manufacturing defects and performance issues under normal operating conditions. Please retain your proof of purchase for warranty claims.
10.2 Support
For technical assistance, warranty claims, or further inquiries, please contact Tewaycell customer support through the seller's platform or the official Tewaycell website. Provide your model number (TW-AO-MB-51100-5KW) and a detailed description of the issue for faster service.
