Tewaycell Powerwall LiFePO4 Battery Pack User Manual

1. Introducció

This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Tewaycell Powerwall LiFePO4 Battery Pack. This high-capacity battery system is designed for household energy storage (ESS) applications, featuring a built-in 200A Battery Management System (BMS), CAN/RS485 communication, and a 10KW output capability. Please read this manual thoroughly before using the product.

2. Informació de seguretat

2.1 Precaucions generals de seguretat

No submergiu la bateria a l'aigua ni deixeu que es mulli.
Do not use or store the battery where it is exposed to extremely high temperatures.
Do not use the battery in strong electrostatic or magnetic fields, as this may compromise battery safety.
Ensure correct polarity: Do not reverse the positive (+) and negative (-) terminals.
Charge the battery only with a specified charger according to the charging requirements.
Keep out of reach of children. In case of ingestion, seek medical attention immediately.

2.2 Advertència de la Proposició 65 de Califòrnia

Warning: This product contains Lithium carbonate, a chemical known to the State of California to cause developmental toxicity. For more information go to www.P65Warnings.ca.gov

3. Producte acabatview

The Tewaycell Powerwall LiFePO4 Battery Pack is a robust and reliable energy storage solution. It features a durable stainless steel housing and is equipped with anti-skid wheels and a concave handle for ease of movement and positioning. The front panel includes a battery menu display for real-time monitoring and control, along with essential switches and ports.

Davant view of Tewaycell 20KWh battery pack highlighting key features like 6000+ cycle life, CAN/RS485, 200A BMS, mobile design, and 10KW output. — Figure 1: Tewaycell 20KWh Battery Pack Front View

posterior view of the Tewaycell battery pack showing power connections and controls. — Figure 2: Tewaycell Battery Pack Rear View

Detallada view of battery features including communication ports (RS485, CAN, RS232), anti-skid wheels, battery menu display, power switches, and concave handle. — Figure 3: Battery Details and Features

3.1 Built-in Battery Management System (BMS)

The integrated 200A BMS provides comprehensive protection for the battery, ensuring longevity and safety. Key protections include:

Protecció de sobrecàrrega
Protecció de sobredescàrrega
Temperature Monitoring (NTC)
Automatic Battery Balancing
Protecció actual
Pantalla de potència

Diagram illustrating the features of the built-in BMS, including over charge protection, overdischarge protection, power display, temperature monitoring, automatic battery balancing, and current protection. — Figure 4: Built-in BMS Features

4. Especificacions

Taula 1: Especificacions del producte
Característica	TW-MB51400-200A-HWB (20KWh)	TW-MB51600-200A-HWB (30KWh)
Tipus de bateria	LiFePO4
Cell & Format	16S2P, TW 206Ah Grade A+	16S2P, 304Ah Grade A+
Volum nominaltage	51.2 V
Capacitat nominal	400 AH	600 AH
Energia Nominal	20,480 Wh	30,720 Wh
Cicle de Vida	6000+ @0.2C, 25℃, 80% DOD
Màx. Potència de sortida contínua	10000 W (10 kW)
Màx. Càrrega Voltage	57.6 V
Descàrrega de tall voltage	43.2 V
Màx. Corrent de càrrega contínua	200A
Màx. Corrent de descàrrega contínua	200A
Màx. Corrent de pols	400A (<1S)
Temperatura de càrrega	0 ℃ ~ 55 ℃
Temperatura de descàrrega	-20 ℃ ~ 60 ℃
Temperature Controlled Fire Extinguisher	Sí
Equilibrador actiu	Sí
Pes net	208 Kg	279 Kg
Gross Weight (Packing)	226 Kg	300 Kg
Dimensions (HLW)	730 * 520 * 450 mm	730520700 mm
Ports de comunicació	RS485*3 / CAN / RS232
Material de closca	SPCC
Dustproof and Waterproof Rating	IP55
Garantia	10 years Life, 7 years Warranty AH
Compatible Inverter Brands	Deye, Voltronic, EASUN, PowMr, Growatt, GOODWE, Victron, SRNE, AFORE, PYLONTECH, SOFAR, MUST, MEGAREVOk, YWT, SRD, STUDER, SMA, DIDU, GINLONG and other common protocol inverters.

Dimensions of the 20KWh battery unit: 780mm height, 520mm length, 460mm width. — Figure 5: 20KWh Unit Dimensions

5. Instruccions de configuració

5.1 Contingut del paquet

Abans de la instal·lació, comproveu que hi hagi tots els components:

Tewaycell Powerwall LiFePO4 Battery Pack (20KWh or 30KWh)
Fit screws for installation
Parallel Power Cable (if applicable for multi-unit setup)
Inverter Cable for RS485/CAN/RS232 communication
Mechanical support (if included)

Image showing the package list including fit screws, parallel power cable, and inverter communication cable. — Figura 6: Contingut del paquet

5.2 Diagrama d'aplicació del sistema

The Tewaycell Powerwall battery integrates into a comprehensive energy system, typically involving solar panels, a generator, or utility grid as power sources, and an inverter to manage power flow to household appliances.

Application diagram showing how solar panels, a generator, and utility power connect to an inverter, which then connects to the Tewaycell 20KWh battery and various home appliances like a refrigerator, light bulb, TV, and air conditioner. — Figura 7: Diagrama d'aplicació

5.3 Powerwall Connection Schematic

The battery system connects to a power inverter, which can draw power from solar panels, the utility grid, or a generator. The inverter then supplies power to your home and can be monitored via a Cube WiFi/4G module, internet, and the PVguarder APP/Web interfície.

Schematic diagram of a Powerwall connection, illustrating the flow from solar panels, utility grid, and generator to a power inverter, then to the battery and home, with monitoring via WiFi/4G and an app. — Figure 8: Schematic Diagram of Powerwall Connection

5.4 Connexions paral·leles

The Tewaycell Powerwall supports parallel connections for increased capacity and output. Up to 16 units can be connected in parallel. Ensure proper wiring and use the provided parallel power cables.

Visual representation of multiple Tewaycell Powerwall units connected in parallel to a house, indicating support for up to 16 parallel connections. — Figure 9: Supports Up to 16 Parallel Connections

5.5 Multi-Battery and Inverter Setup Example

For larger systems, multiple batteries can be connected to multiple inverters via an air switch, ensuring balanced load distribution. Ensure all cables, especially those supporting high currents, are appropriately rated.

Wiring diagram showing three 15KWH batteries connected to an air switch, which then connects to three 5KW inverters. A note indicates that the main cable needs to support 300A current. — Figura 10: Example Multi-Battery and Inverter Setup

6. Instruccions de funcionament

6.1 Encès/Apagat

Locate the power switch on the battery unit (refer to Figure 3) and toggle it to the 'ON' or 'OFF' position as required.

6.2 Battery Menu Display

The integrated battery menu display provides real-time information about the battery's status, including voltage, current, state of charge (SOC), and other critical parameters.

6.3 PC Monitoring and Parameter Setting

The battery system can be connected to a PC for advanced monitoring and parameter configuration using the provided communication cables (RS485/CAN/RS232) and software.

Screenshot of the PC monitoring software interface showing various parameter settings for the battery, including voltage protection, current protection, temperature protection, and balancing thresholds. — Figure 11: PC Monitoring - Parameter Setting Interface

Screenshot of the PC monitoring software showing real-time and multi-monitoring data for the battery, including pack information, temperature, cell voltages, and alarm status. — Figure 12: PC Monitoring - Realtime and Multi Monitoring

6.4 Charge and Discharge Characteristics

Understanding the battery's charge and discharge curves is crucial for optimizing performance and lifespan. The battery is designed for stable operation across a range of temperatures and discharge rates.

Graphs showing battery charge and discharge curves, including charge characteristics at 0.2C & 0.5C at 25°C, and charge/discharge voltage i corbes de corrent. — Figure 13: Battery Charge & Discharge Curves

Graphs illustrating different rate discharge curves at 25°C and different temperature discharge curves at 0.5C, 25°C. — Figure 14: Discharge Performance Curves

Graphs showing open circuit voltage vs. SOC% and battery test curve analysis with specific test conditions and parameters. — Figure 15: Open Circuit Voltage and Test Analysis

7. Manteniment

The Tewaycell Powerwall LiFePO4 Battery Pack is designed for minimal maintenance. However, adhering to the following guidelines will ensure optimal performance and longevity:

Condicions ambientals: Operate and store the battery within the specified temperature ranges (Charge: 0℃~55℃, Discharge: -20℃~60℃). Avoid extreme heat or cold.
Neteja: Keep the battery unit clean and free from dust and debris. The IP55 rating provides protection against dust and water splashes, but direct immersion should be avoided.
Connexions: Comproveu periòdicament totes les connexions dels cables per assegurar-vos que estiguin ben fixades i que no presentin corrosió.
Equilibrador actiu: The built-in active balancer helps maintain cell voltage consistency, extending the battery's lifespan. No user intervention is typically required for this feature.

8. Solució De Problemes

If you encounter any issues with your Tewaycell Powerwall battery, please refer to the following common concerns:

Compatibilitat de l'inversor: Ensure your inverter is compatible with the battery's communication protocols (CAN, RS485). A list of compatible brands is provided in the specifications. If your inverter is not listed, or if you are using a Huawei inverter, specific BMS configurations or additional components might be required.
Problemes de connexió: Double-check all wiring connections between the battery, inverter, and other system components. Incorrect polarity or loose connections can prevent proper operation.
Battery Not Charging/Discharging: Verify that the power switch is in the 'ON' position and that the charging source (solar, utility, generator) and load are correctly connected and operational. Check the battery menu display or PC monitoring software for error codes or status indicators.
Technical Problems: For any complex technical issues or if you require assistance with connections, please contact Tewaycell customer support.

9. Consells d'usuari

Verify Inverter Protocol: Abans de la compraasing or installing, confirm that your inverter's communication protocol (e.g., CAN, RS485) matches the battery's capabilities to ensure seamless integration.
Seek Installation Assistance: If you are unsure about the wiring or connection diagrams, especially for complex multi-battery or multi-inverter setups, contact Tewaycell for technical assistance.
Monitoritzar regularment: Utilize the battery's display menu or PC monitoring software to keep track of its performance and health. This can help identify potential issues early.

10. Garantia i Suport

The Tewaycell Powerwall LiFePO4 Battery Pack comes with a 10-year life expectancy i a 7-year warranty on AH (Ampere-hour) capacity. For any technical problems, support, or warranty claims, please contact Tewaycell directly. Our support team is available 24 hours online to assist you.

Image displaying various certification documents, including CE certification, for the battery product. — Figura 16: Certificacions de producte

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