Deye 76.8kWh BOS-A High Voltage Battery Bank
Overview of the Deye BOS-A High Voltage Battery System
The Deye BOS-A 76.8kWh High Voltage Battery Bank is a rack-mounted lithium iron phosphate (LiFePO4) energy storage system designed for commercial, industrial, and large-scale residential applications. Built as part of Deye’s BOS-A modular ESS platform, this system delivers high energy density, long cycle life, and reliable high-voltage performance for demanding inverter-based power systems.
What the Deye BOS-A 76.8kWh System Is Designed to Do
This system stores DC electrical energy at high voltage and supplies it to compatible high-voltage hybrid or battery inverters. It is designed to:
- Provide large-scale backup power during grid outages
- Support solar self-consumption in commercial installations
- Operate efficiently through reduced DC current
- Scale modularly for future system expansion
What This System Is Not
The BOS-A battery bank is a battery energy storage system only and does not perform inverter or solar charging functions.
- It is not an inverter and does not generate AC power
- It does not include MPPT charge controllers
- It does not connect directly to solar panels
- It must not be used with low-voltage (48V) inverter systems
System Type and Voltage Class
The Deye BOS-A operates as a high-voltage DC battery system.
- System type: High-voltage rack-mounted battery system
- Nominal system voltage: 268.8V – 806.4V (configuration dependent)
- System operating voltage range: 235.2V – 919.8V
- Designed for high-voltage hybrid and battery inverters
Battery Chemistry and Cell Technology
The BOS-A system uses lithium iron phosphate (LiFePO4) battery modules for enhanced safety and longevity.
- Excellent thermal stability and low fire risk
- Long cycle life suitable for daily cycling
- Stable voltage output under continuous load
Modular Architecture and Configuration
The 76.8kWh configuration is built using Deye BOS-A battery modules.
- Battery module energy: 7.68kWh per module
- Module nominal voltage: 38.4V
- Battery module capacity: 200Ah
- Number of modules in this system: 10
- Total usable system energy: approximately 76.8kWh
Charge and Discharge Performance
- Recommended charge and discharge current: 100A
- Maximum charge and discharge current: 160A
- High-voltage architecture allows efficient power delivery
Depth of Discharge and Cycle Life
- Recommended depth of discharge: 90%
- Cycle life: ≥6000 cycles at 25°C, 0.5C charge/discharge, EOL 70%
Battery Management and Safety
An intelligent battery management system is integrated into the BOS-A platform.
- Over-charge and over-discharge protection
- Over-current and short-circuit protection
- Temperature monitoring and control
- Cell balancing and fault diagnostics
Communication and Monitoring
- Communication interface: CAN 2.0
- Compatible with Deye cloud-based monitoring platform
- Real-time system status and performance monitoring
Physical Specifications and Installation
- Installation type: Rack-mounted
- Enclosure rating: IP20
- Rack dimensions (W × D × H): 610 × 610 × 1900 mm
- Approximate system weight: 558 kg
- Installation location: Indoor or fully protected area
Standards and Certification
- CE certified
- IEC 62619
- IEC 62040
- UN38.3
- VDE-2510
Typical Applications
- Commercial and industrial solar energy storage
- Hybrid and grid-tied backup systems
- Warehouses, factories, and office buildings
- Large inverter-based ESS installations
FAQ
Frequently Asked Questions
Which inverters are best suited for the Deye BOS-A 76.8kWh battery?
The BOS-A system is designed to work seamlessly with Deye high-voltage hybrid and battery inverters, particularly 50kW and 80kW models. Compatibility with other high-voltage inverter brands depends on supported voltage ranges and communication protocols.
Is this battery suitable for commercial and industrial use?
Yes. With its high energy capacity, long cycle life, and high-voltage architecture, the BOS-A 76.8kWh system is well suited for commercial buildings, factories, warehouses, and large inverter-based installations.
Can the BOS-A system be expanded?
Yes. The BOS-A platform supports flexible expansion by adding additional battery racks in parallel, subject to inverter and system design limits.
What are the advantages of a high-voltage battery system?
High-voltage systems reduce DC current, improve efficiency, lower cable losses, and are more suitable for large energy storage capacities compared to low-voltage systems.
Does the system support monitoring?
Yes. The BOS-A integrates with Deye’s cloud monitoring platform, allowing real-time system monitoring, diagnostics, and performance tracking.
Is professional installation required?
Yes. Due to the high DC voltage and system complexity, installation must be carried out by qualified professionals in accordance with electrical safety regulations.
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