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Eco-Worthy 48V 100Ah 5.12 kWh Home Battery | Server Rack| UL9540 | UL1973 | UL9540A
Eco-Worthy 6KW AIO Inverter
Eco-Worthy 10000W AIO Inverter
Home Power Bundle | 10kW Inverter with 48V 100AH Server Rack Battery | 30.72kWh
Home Power Bundle | 10kW Inverter with 48V 100AH Server Rack Battery | 20.48kWh
Home Power Bundle | 6kW Inverter with 48V 100AH Server Rack Battery | 20.48kWh
Home Power Bundle | 6kW Inverter with 48V 100AH Server Rack Battery | 10.24kWh
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August 29,2025
In multi-battery systems—especially when batteries are connected in parallel—configuring master-slave communication allows coordinated operation and unified control across the pack. The master battery handles all external communication with the inverter, EMS, or host PC, while the slave batteries synchronize their operating states internally. This arrangement enhances overall system stability and safety.
Its primary purpose is to designate one battery as the “master” or “controller” that communicates externally (e.g., with the inverter or monitoring equipment), while the remaining batteries act as “slaves”, synchronizing key parameters such as SOC, current, and voltage. This prevents data conflicts and spurious alarms.
Parallel connection of multiple battery modules
Integration with closed-loop inverters (e.g., Growatt, Deye)
EMS platforms that require a unified SOC report
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Decoding the Multi-Dimensional Communication Capabilities of the ECO-WORTHY 48V100Ah Server Rack Battery
May 29,2025
How to Use the Host PC Software
September 8,2025
How to Connect the Mobile App
September 11,2025
Which inverter brands are supported? What is closed-loop communication?
September 19,2025
How to Configure the Battery for Closed-Loop Communication with an Inverter?
Closed-Loop vs. Open-Loop Communication
September 22,2025
The core theme of this article series is “Intelligent Battery Communication,” focusing on the communication functions and technologies of the 48V 100AH server rack battery and its related devices. It covers master-slave communication, upper computer communication, mobile APP communication, and inverter communication, aiming to help users understand and apply these technologies.
1.
Master-slave communication is currently supported on the Server Rack series batteries (48V 100 Ah and 48V 50 Ah).
Use the supplied RS485 cable to daisy-chain the RS485-2 ports between batteries
RS232 to USB
RS485 to USB
The RS232 to USB cable is primarily used to connect devices with an RS232 interface to those with a USB interface . It can convert signal levels and communication protocols, allowing these two different types of interfaces to be compatible.
The RS485 to USB communication cable is a device for interface conversion. It can convert data from the RS485 protocol to the USB protocol, and vice versa. In this way, a computer can communicate with devices that support the RS485 protocol, such as 48V(51.2V) 100AH Lithium Iron Phosphate (LiFePO4) server rack battery, via the USB interface. This allows for operations like connecting to a host computer or SolarAssistant, reading battery data, and updating battery firmware.
2.
Address assignment via DIP switch
Master battery address is set as 1
Slave batteries addresses are assigned sequentially from 2 to 32
3.
If communication with the AIO is required, select the correct protocol in Mobile App, Host PC software and External display ESM-100 .
Once the addresses are configured and the wiring is complete, individual battery data can be viewed through the App, host PC software, or ESM-100 display.
Q: The slave unit is not recognized / battery details cannot be viewed
A: Address conflict or improper wiring. Please verify the DIP-switch address of each battery and confirm that the RS485 cables are connected in the correct daisy-chain order.
Q: Data between batteries is out of sync
A: Cell imbalance or cable interference. Please inspect the RS485 cables for damage and ensure all batteries have undergone simultaneous charge/discharge cycles.
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Master-slave communication is a critical step in building a highly stable battery system. Proper configuration not only enables coordinated operation among batteries, but also lays the groundwork for subsequent closed-loop control and seamless integration with host PCs and mobile apps.
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