Deye BOS-G-PRO BMU & High Voltage Control Box – BOS-G-PDU-2
Deye BOS-G-PDU-2 High Voltage Control Box and BMU for BOS-G Pro 5.12kWh LiFePO4 battery systems. Enables safe HV battery management, monitoring and communication with compatible Deye inverters.
Deye BOS-G-PDU-2 High Voltage Battery Control Box
The Deye BOS-G-PDU-2 is the dedicated Battery Management Unit (BMU) and High Voltage Control Box for the Deye BOS-G Pro high-voltage lithium battery system. It is designed to work with Deye BOS-G-Pack5.1 5.12kWh LiFePO4 battery modules, providing the control, protection, monitoring and communication functions required to build a complete high-voltage battery energy storage system.
The BOS-G-PDU-2 forms the central control interface between the connected battery modules and the inverter/PCS. It manages the high-voltage battery cluster while providing essential protection and communication functions for reliable energy storage operation.
The BOS-G Pro system uses modular 5.12kWh LiFePO4 battery packs, allowing systems to be configured from multiple battery modules to suit residential, commercial and industrial energy-storage requirements.
Intelligent High-Voltage Battery Management
The BOS-G-PDU-2 incorporates the control and protection functions required for the BOS-G Pro high-voltage battery system. It includes a circuit breaker, high-voltage status indication, alarm functionality and communication interfaces for connection to the inverter.
The control box supports battery-system monitoring and protection, helping manage parameters such as battery voltage, current and state of charge while detecting conditions including over-voltage, under-voltage, over-temperature, isolation and over-current faults.
Designed for Deye BOS-G Pro 5.12kWh Batteries
The BOS-G-PDU-2 is specifically designed as part of the Deye BOS-G Pro modular HV battery system.
A complete system combines the control box with multiple Deye BOS-G-Pack5.1 5.12kWh LiFePO4 battery modules. Depending on the required storage capacity, between 5 and 16 battery modules can be connected in series within a BOS-G Pro battery cluster.
Typical configurations include:
| Battery Modules | Nominal Energy |
|---|---|
| 5 × BOS-G-Pack5.1 | 25.60kWh |
| 6 × BOS-G-Pack5.1 | 30.72kWh |
| 8 × BOS-G-Pack5.1 | 40.96kWh |
| 10 × BOS-G-Pack5.1 | 51.20kWh |
| 12 × BOS-G-Pack5.1 | 61.44kWh |
| 16 × BOS-G-Pack5.1 | 81.92kWh |
This modular design makes it possible to scale the battery system according to the application's energy-storage requirements.
High-Voltage Battery System Control
The BOS-G-PDU-2 is designed for high-voltage battery applications, with the control box supporting a DC operating range of approximately 200V to 1000V and a 100A nominal current rating, with a maximum current rating of 120A according to the Deye documentation.
The control box provides the necessary interface between the battery stack and the connected inverter/PCS and includes dedicated connections for power, communication and grounding.
Communication & Monitoring
The BOS-G-PDU-2 communicates with the inverter/PCS through dedicated communication interfaces.
The Deye documentation specifies:
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CAN communication
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RS485 communication
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CAN default communication speed: 500 bps
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RS485 default communication speed: 9.6 kbps
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USB interface for service and firmware upgrades
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HMI/status indication
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High-voltage status indication
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Alarm indication
This communication allows the connected inverter to receive battery information such as voltage, current and SOC while enabling battery protection and management functions.
Built-In Battery Protection
The BOS-G Pro system incorporates multiple battery protection and monitoring functions. The control system is designed to monitor and respond to abnormal operating conditions, including:
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Over-voltage
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Under-voltage
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Over-current
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Over-temperature
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Isolation faults
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Other battery-system alarms and protection conditions
The BMU/control architecture helps ensure that the high-voltage battery system operates within its specified parameters.
Ideal for Commercial & Industrial Energy Storage
The Deye BOS-G-PDU-2 is part of a scalable high-voltage energy storage platform suitable for applications such as:
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Commercial solar systems
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Industrial solar installations
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Backup power systems
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Peak-load management
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Load shifting
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Renewable-energy storage
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Farms
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Schools
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Banks
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Supermarkets
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Small factories
The modular BOS-G Pro architecture allows larger storage systems to be built by combining multiple battery modules and battery clusters.
Deye BOS-G-PDU-2 Key Specifications
| Specification | Details |
|---|---|
| Product | Deye BOS-G-PDU-2 |
| Product Type | High Voltage Battery Control Box / BMU |
| Compatible Battery | Deye BOS-G-Pack5.1 |
| Battery Module Capacity | 5.12kWh |
| Battery Chemistry | LiFePO4 |
| DC Voltage Range | 200–1000Vdc |
| Nominal Current | 100A |
| Maximum Current | 120A |
| Communication | CAN / RS485 |
| CAN Default Speed | 500 bps |
| RS485 Default Speed | 9.6 kbps |
| USB | Yes |
| HMI | Yes |
| High Voltage Indicator | Yes |
| Alarm | Yes |
| System Configuration | 5–16 battery modules |
| Installation | BOS-G Pro rack system |
Important: Control Box Only
The BOS-G-PDU-2 is the BMU/high-voltage control box and is not a 5.12kWh battery by itself.
It must be used as part of a compatible Deye BOS-G Pro high-voltage battery system, together with the required BOS-G-Pack5.1 battery modules and associated system components.
Professional installation by a suitably qualified installer is required for high-voltage battery systems.
Why Choose the Deye BOS-G-PDU-2?
The Deye BOS-G-PDU-2 provides the essential control and protection interface for building a scalable Deye BOS-G Pro high-voltage LiFePO4 energy storage system. Combined with BOS-G-Pack5.1 battery modules, it enables modular battery capacities from approximately 25.6kWh to 81.92kWh per system configuration, with high-voltage operation and inverter communication.
For commercial and industrial solar installations requiring substantial battery storage, the BOS-G Pro platform offers a flexible way to expand storage capacity while maintaining integrated battery monitoring, protection and communication.
Frequently Asked Questions
What is the Deye BOS-G-PDU-2?
The BOS-G-PDU-2 is the Battery Management Unit (BMU) and high-voltage control box used with Deye BOS-G Pro high-voltage battery systems.
What battery does the BOS-G-PDU-2 work with?
It is designed to work with the Deye BOS-G-Pack5.1 5.12kWh LiFePO4 high-voltage battery modules.
Is the BOS-G-PDU-2 a battery?
No. The BOS-G-PDU-2 is the high-voltage control and battery management unit. The 5.12kWh energy storage is provided by the BOS-G-Pack5.1 battery modules.
How many BOS-G-Pack5.1 batteries can be used?
The BOS-G Pro system documentation specifies configurations using 5 to 16 BOS-G-Pack5.1 modules in a battery cluster.
What is the voltage range of the BOS-G-PDU-2?
The control box is specified for 200–1000Vdc high-voltage battery systems.
What communication protocols does the BOS-G-PDU-2 support?
The system supports CAN 2.0 and RS485 communication. The control box also includes a USB interface.
What is the maximum current rating?
The BOS-G-PDU-2 is specified at 100A nominal current and 120A maximum current.
Can the BOS-G Pro system be expanded?
Yes. The BOS-G Pro platform uses modular 5.12kWh battery packs and supports multiple battery modules and larger system configurations.
Who should install the BOS-G-PDU-2?
Because this is part of a high-voltage battery system, installation should be performed by a suitably qualified and authorised installer in accordance with the applicable installation requirements.