The Energy Storage System WTB-4K/4S-A is a compact lithium-based energy storage unit designed to store and manage electrical energy within a structured power system. Based on the product image, the system adopts a vertical cabinet structure with a reinforced enclosure, a front-mounted circular display interface, and clearly marked electrical identification showing 12.8V, 314Ah, and 4kWh. The enclosure includes integrated side handles and a wheeled base, allowing controlled positioning and easier movement during installation. The external design maintains a clean and enclosed structure, ensuring that all operational interaction is focused on the front display area without unnecessary external complexity.
From a user experience perspective, the system is designed for direct interaction and stable monitoring. The front display provides real-time system visibility, allowing users to observe operational status without relying on external monitoring tools. The system supports communication interfaces such as RS485 and RS232, along with mobile application viewing, enabling remote monitoring and control. The compact size combined with a high-capacity configuration ensures that the unit remains manageable while delivering stable performance. The wheel-supported base enhances deployment flexibility, while the integrated display and communication system ensure that users can monitor and manage the system efficiently.
| Model | WTB-4K/4S-A |
| Cell | |
| Cell Chemistry | LiFePO4/C |
| Module | |
| Nominal Capacity (Wh) | 4K |
| Nominal Voltage | 12.8V |
| System | |
| Operating Voltage Range | 11.2V-14.5V |
| Standard Charging Current (A) | 60 |
| Max. Charging Current (A) | 100 |
| Continuous Discharge Current (A) | 100 |
| Peak Discharge Current (A) | 200 |
| Cycle Life (cycles) | 6000 |
| Self-discharge Rate | ≤3%/month |
| Operating Environment | |
| Charging Temperature (℃) | 0-45 |
| Discharging Temperature (℃) | -75 |
| Storage Temperature (℃) | -55 |
| Storage Humidity (RH) | 5-95% |
| Protection | |
| Overcharge Protection Voltage | √ |
| Over-discharge Protection Voltage | √ |
| Overcurrent Protection | √ |
| Short Circuit Protection | √ |
| Temperature Protection | √ |
| Active Balancing | 0.6A |
| Communication & Display | |
| CAN / RS485 / RS232 | |
| Mobile APP | √ |
| Display | 3.2" |
| Appearance | |
| Dimensions (Including Footmaster Wheels) | 440*440*250mm |
| Weight (Including Footmaster Wheels) | 41kg |
Use Brand-Name A Battery Cells (if Any Non-A Cells Are Found, Please Report Them). The Cell Design Life Is 8,000 Cycles @ 80% DOD
Using The Well-Known Brand BMS, The Entire Series Features Active Currentbalancing With Small Currents, Ensuring That The System Can Extend Its Servicelife By 20% In Normal Environments (compared To Our Non-Active Balancingsystem)
Ouchscreen Design, No Screws On The Front, Elegant And Stylish
Built-In Aerosol To Eliminate Safety Hazards
485/232 Communication
Support Viewing Of The APP
The system supports residential backup energy storage where stable power is required during outages. With a capacity of 4 kWh, it can supply essential loads such as lighting, communication devices, and refrigeration for extended periods. Based on typical consumption of 300 to 500 W for essential household loads, a 4 kWh system can provide approximately 8 to 12 hours of backup power. The system ensures stable voltage output, allowing connected devices to operate without interruption. The integrated monitoring system allows users to track remaining energy capacity and system status in real time, ensuring that backup readiness can be maintained effectively.
In off-grid or remote environments, the system provides a reliable energy storage solution capable of maintaining stable power supply. The 4 kWh capacity ensures sufficient energy availability for daily use, while the low self-discharge rate allows stored energy to remain available over extended periods. The system can operate under varying environmental conditions, maintaining consistent performance. Remote monitoring capability allows users to access system data without being physically present, ensuring that energy management remains controlled even in isolated locations.
For small office environments, the system provides stable energy storage to support essential equipment such as computers, networking devices, and lighting. A 4 kWh capacity ensures that operations can continue during power interruptions without disruption. The system maintains stable voltage output, ensuring that sensitive electronic devices operate reliably. Communication interfaces allow integration with monitoring systems, enabling centralized tracking of energy usage and improving operational efficiency within office environments.
Telecommunication systems require continuous and stable power supply, and the system supports this requirement with consistent energy storage performance. The high current capability allows the system to handle sudden load increases, ensuring uninterrupted operation of communication equipment. The ability to monitor system status remotely ensures that operators can maintain performance without frequent site visits. This improves system reliability and reduces maintenance requirements in telecom installations.
