High-Voltage Battery Cluster Control Box (750 V / 100 A, with EPC/ENC/ECOM Cables)
The Deye HVB750V/100A-EU is the “control brain” for Deye BOS-G high-voltage battery racks. It manages up to 12 BOS-GM5.1 battery modules as one safe, smart high-voltage battery bank (up to around 61.44 kWh), with an operating range of 120–750 V DC and 100 A nominal / 125 A max current. Australian wholesalers list it as a High Voltage Box 750V/100A, including 2 m EPCable, 2 m ENCable and 2 m ECOMCable, ready to connect into a compatible inverter.
BSC Renewables uses this unit when building Deye BOS-G high-voltage battery systems for larger homes, rural properties and commercial sites.
What Is the HVB750V/100A-EU?
Instead of being a battery itself, the HVB750V/100A-EU is the high-voltage box / BMS control box that sits with a rack of BOS-GM5.1 5.12 kWh modules:
- It is a “High-voltage battery cluster control box” for the BOS-G high-voltage system.
- It links the battery rack to the inverter, handles safety, monitoring and communication.
- It includes 2 m EPCable, 2 m ENCable & 2 m ECOMCable”, so the main cables are supplied with the unit.
Think of it as the central control and protection box that makes a stack of BOS-GM5.1 modules behave like one large, well-behaved high-voltage battery.
Why This Box Matters in a Deye BOS-G System
1. Central “Brain” for Your High-Voltage Battery Rack
Deye and multiple distributors describe the HVB750V/100A-EU as the battery cluster control box or BMS box for BOS-G systems.
What it does for you (quietly in the background):
- Coordinates up to 12 BOS-GM5.1 modules in series as one high-voltage pack (typical system capacities up to ~61.44 kWh).
- Talks to the Deye hybrid inverter so it knows state of charge, voltage and safe limits.
- Makes the rack behave like one integrated battery, rather than a bunch of loose modules.
From a user’s point of view, that means simpler control and more reliable operation.
2. Built for Serious Power Levels
From official product data and regional listings:
- Operating voltage: 120 – 750 V DC
- Nominal charge/discharge current: 100 A
- Max charge/discharge current: 125 A
- Designed specifically for BOS-G high-voltage systems using BOS-GM5.1 modules
In practice, this lets BSC Renewables design systems that:
- Handle larger inverters and higher loads than a typical low-voltage home battery
- Are suited to bigger homes, rural properties and small commercial sites that need proper battery capacity, not a token amount
3. Safety, Protection and Smart Management
- Acts as a central BMS/management unit for the high-voltage battery rack
- Provides over-voltage, under-voltage, over-current and temperature protection for the battery system
- Supports real-time monitoring of voltage, current, state of charge and alarms via the inverter platform
That means your high-voltage battery bank is:
- Actively monitored, not just “plugged in and forgotten”
- Protected against common fault conditions
- Easier to support over the long term, because data is available for diagnostics
4. Tidy, Ready-to-Connect Hardware (With Cables)
It includes 2 m EPCable, 2 m ENCable & 2 m ECOMCable.
Plus the HV box is designed as part of a rack-mountable 19″ system, with matching connections for BOS-GM5.1 modules and the inverter.
Benefits:
- Main DC and communication cables are included and matched to the system
- Install ends up cleaner and faster – fewer loose parts to source and fewer chances for wiring mistakes
- Everything is designed to work together under the Deye BOS-G specification
5. Built for Real-World Conditions
From product info and regional listings:
- Operating temperature range: roughly –20 °C to +65 °C
- Ingress protection: IP20 (indoor control box – typically in a rack/plant room)
- Warranty: often listed as 10 years / 120 months on EU/AU distributor sites
So while the battery modules handle the heavy lifting, the HV box is designed to:
- Live in a protected indoor location (electrical or plant room)
- Run for years as the quiet control centre of your high-voltage battery system
BSC Renewables will choose a suitable indoor spot – usually close to the rack and inverter – that meets safety and access requirements.
Key Specs
- Model: HVB750V/100A-EU
- Type: High-voltage battery cluster control box / HV BMS box for BOS-G
- System role: Central BMS and interface between BOS-GM5.1 battery rack and Deye HV hybrid inverter
- Operating voltage: 120 – 750 V DC
- Nominal current: 100 A
- Max current: 125 A
- Ingress protection: IP20 (indoor)
- System capacity (with BOS-GM5.1): typically up to 61.44 kWh per cluster (3–12 modules in series)
- Included accessories (AU listings):
- 2 m EPCable (power)
- 2 m ENCable (power/earth, as specified)
- 2 m ECOMCable (communication)
- 2 m EPCable (power)
It isn’t a standalone battery – it’s the control and connection box that makes a BOS-GM5.1 high-voltage rack function as one well-managed system
How BSC Renewables Uses This High-Voltage Box
When BSC Renewables designs a BOS-G high-voltage system using the HVB750V/100A-EU, they will typically:
- Design the right battery rack
- Decide how many BOS-GM5.1 5.12 kWh modules you need (e.g. 3, 8 or 12) based on your bills, loads and future plans.
- Size the system so it suits your inverter, site loads and backup requirements.
- Decide how many BOS-GM5.1 5.12 kWh modules you need (e.g. 3, 8 or 12) based on your bills, loads and future plans.
- Locate and install the HV box properly
- Mount the HV box in an indoor plant/electrical room or suitable cabinet.
- Connect it to the battery rack using the specified harness and communication wiring.
- Mount the HV box in an indoor plant/electrical room or suitable cabinet.
- Connect to the inverter with the supplied cables
- Commission and test the full system
- Check that modules are recognised correctly and that the cluster operates in the correct voltage range.
- Test charge/discharge behaviour, alarms and monitoring.
- Check that modules are recognised correctly and that the cluster operates in the correct voltage range.
For you, all of this is packaged as “a high-voltage battery system that just works” – you don’t need to worry about how the HV box itself is wired or configured.
Ready to Talk High-Voltage Battery Systems?
Thinking about a Deye BOS-G high-voltage battery rack for a larger home, farm or commercial site? Chat with BSC Renewables and they’ll design a complete system using the HVB750V/100A-EU control box and BOS-GM5.1 modules that fits your loads today – and leaves room to grow tomorrow.