Deye High Voltage C&I Battery Cabinet 215kWh (BOS-B batteries)

The DEYE High Voltage C&I Battery Cabinet 215kWh (BOS-B Batteries) is part of Deye’s commercial and industrial (C&I) energy storage range, available in two models: MS-G215-2H2 and MS-GS215-2H2. Both configurations combine 215kWh of system energy, 100kW AC output and integrated energy management, power conversion and battery management functions within a high-voltage energy storage cabinet.

The MS-G215-2H2 is designed for commercial and industrial energy storage applications requiring integrated battery storage, power conversion and off-grid backup capability. The MS-GS215-2H2 adds dedicated solar PV input functionality, with 150kW DC rated PV input power and eight MPPT trackers, supporting the integration of solar generation and energy storage.

Both models use LiFePO4 battery technology and operate within a battery voltage range of 660–864V. They feature a maximum round-trip efficiency of 88%, an IP54-rated enclosure, an anti-corrosion grade of up to C5 and ETH/4G system communication.

The two models also support parallel system configurations for larger C&I applications, with documented on-grid expansion of up to 20 units and off-grid expansion of up to 10 units.

Key Features of Product

215kWh High-Voltage Energy Storage

Both the MS-G215-2H2 and MS-GS215-2H2 are specified with 215kWh of system energy and a battery operating voltage range of 660–864V.

The associated BOS-B battery documentation identifies a 15-module configuration providing 214.5kWh of nominal system energy and 193.05kWh of usable energy.

Each BOS-B battery module has:

• Nominal voltage: 51.2V

• Nominal capacity: 280Ah

• Nominal energy: 14.3kWh

• Approximate weight: 122kg

The BOS-B battery architecture supports 5 to 15 modules connected in series, with a recommended depth of discharge of 90%.

100kW AC Output

Both models provide 100kW AC output power at 380/400Vac and 50/60Hz using a three-phase grid configuration.

The documented converter specifications include:

• Rated AC output power: 100kW
• Rated AC output current: 152A
• Maximum AC output current: 167A
• Peak power: 1.1 times rated power
• Maximum system round-trip efficiency: 88%

For the MS-GS215-2H2, the converter documentation also specifies a maximum converter efficiency of 97.6%, a power factor range of -1 to 1 and total harmonic distortion below 3%.

These specifications describe the AC power conversion capabilities of the respective cabinet configurations.

Integrated EMS, PCS & BMS

Both models use an integrated architecture combining an Energy Management System (EMS), Power Conversion System (PCS) and Battery Management System (BMS).

This design brings together battery management, power conversion and energy control functions within the C&I energy storage platform.

The MS-G215-2H2 documentation identifies power supply redundancy and black start functionality.

For the MS-GS215-2H2, Deye lists intelligent control functions including peak-valley management, anti-backflow, overload protection, load tracking, demand control, backup power and phase separation

Integrated 150kW PV Input – MS-GS215-2H2 Only

The MS-GS215-2H2 includes dedicated solar PV input functionality, distinguishing it from the MS-G215-2H2 configuration.

Its documented PV input specifications include:

• Rated PV input power: 150kW DC
• Maximum PV input voltage: 1,000V
• Start voltage: 200V
• MPPT voltage range: 180–880V
• Full-load voltage range: 450–850V
• Number of MPPT trackers: 8
• Listed maximum PV input current: 40A
• Listed short-circuit current: 60A

The PV section is specified with dimensions of 440 × 610 × 178mm and an approximate weight of 32kg.

This PV input functionality enables the MS-GS215-2H2 to combine solar PV input, battery storage and AC power conversion within its documented configuration.

These PV input specifications apply specifically to the MS-GS215-2H2 model.

Scalable C&I Energy Storage

Both configurations support parallel expansion for larger commercial and industrial energy storage requirements.

Deye specifies the following system configurations:

• On-grid operation: Up to 20 units in parallel, reaching 2MW/4.3MWh.
• Off-grid operation: Up to 10 units in parallel, reaching 1MW/2.15MWh.

These documented expansion limits allow system capacity to be planned beyond a single 215kWh cabinet.

LiFePO4 Battery Technology

Both models use lithium iron phosphate (LiFePO4) battery technology through the associated BOS-B battery architecture.

The BOS-B battery documentation specifies:

• Recommended depth of discharge: 90%
• Cycle life: At least 6,000 cycles
• Cycle test temperature: 25°C ±2°C
• Charge/discharge test rate: 0.5C
• End-of-life condition: 70% EOL
• Listed warranty period: 10 years

The stated cycle life is based on Deye’s specified testing conditions rather than an unconditional operating-life guarantee.

Air-Cooled Thermal Management

The MS-G215-2H2 and MS-GS215-2H2 are part of Deye’s air-cooled C&I energy storage range.

The documented cabinet operating conditions include:

• Operating temperature: -20°C to 50°C
• Derating above: 45°C
• Maximum working altitude: 3,000m

The associated BOS-B battery documentation separately specifies a discharge temperature range of -20°C to 55°C and a charging temperature range of 0°C to 55°C.

The BOS-B battery system uses smart fan cooling and incorporates battery management functions.

Protection & Safety

Both cabinet models use an IP54-rated enclosure with an anti-corrosion grade of up to C5.

Deye’s supplied system documentation identifies the following safety provisions:

• LiFePO4 battery chemistry
• Aerosol fire extinguishing
• Automatic battery-compartment ventilation
• Explosion-proof protection

The BOS-B battery system also incorporates intelligent BMS active balancing and protection functions.

These features form part of the documented battery and cabinet safety architecture.

Communication & Monitoring

Both models support ETH and 4G system communication.

The converter documentation identifies CAN, RS485 and ETH communication interfaces, together with an LCD display.

The associated BOS-B battery system supports TCP, RS485 and CAN communication, including CAN communication with the BMS.

Floor-Mounted Cabinet Design

The supplied cabinet specifications identify the following physical characteristics for both configurations:

• Dimensions (W × D × H): 1,865 × 1,000 × 2,500mm
• Approximate system weight: 2,700kg
• Enclosure protection: IP54
• Anti-corrosion grade: Up to C5
• Maximum operating altitude: 3,000m

The MS-G215-2H2 is specified as a floor-mounted system. Cabinet positioning and installation planning must account for the documented equipment dimensions, weight and environmental requirements.

Main Benefits

For Commercial & Industrial Energy Storage

Both models combine 215kWh of system energy with 100kW AC output within an integrated C&I energy storage cabinet.

The combination of EMS, PCS and BMS functions provides a coordinated system architecture for managing battery storage and power conversion.

For Projects Requiring PV Integration

The MS-GS215-2H2 offers dedicated solar PV input functionality with 150kW DC rated input power and eight MPPT trackers.

Its documented MPPT voltage range of 180–880V and full-load voltage range of 450–850V provide defined electrical parameters for PV system design.

This model is suited to projects requiring solar PV input alongside the 215kWh battery storage and 100kW AC output configuration.

For Scalable Energy Storage Projects

Both configurations support parallel expansion beyond a single cabinet.

Deye specifies up to 20 units in parallel for on-grid operation and up to 10 units for off-grid operation, allowing larger systems to be designed within the documented limits.

For Backup & Off-Grid Applications

Both models support off-grid operation through the documented system configurations.

The MS-G215-2H2 documentation identifies off-grid backup and black start functionality, while the MS-GS215-2H2 includes backup power and demand control among its listed intelligent control functions.

The appropriate configuration depends on the project’s operating requirements.

For Long-Term Energy Storage Planning

The associated BOS-B battery system has a recommended depth of discharge of 90% and a documented cycle life of at least 6,000 cycles under the manufacturer’s stated test conditions.

The supplied battery specifications also reference a 10-year warranty, providing a documented warranty period for consideration during project planning.

For Challenging Installation Environments

Both cabinet configurations feature IP54 enclosure protection and an anti-corrosion grade of up to C5.

The documented operating temperature range of -20°C to 50°C, with derating above 45°C, and maximum working altitude of 3,000m provide defined environmental parameters for installation planning.

Installation

The supplied Deye product documentation provides technical specifications, cabinet dimensions, operating conditions and configuration information for the MS-G215-2H2 and MS-GS215-2H2.

However, the supplied content does not include complete model-specific installation manuals. The following overview therefore focuses on documented installation considerations rather than introducing unverified wiring procedures, mounting instructions or commissioning sequences.

Confirm the Selected Model

Identify whether the installation requires the MS-G215-2H2 or MS-GS215-2H2.

Both models provide 215kWh system energy and 100kW AC output.

The MS-GS215-2H2 additionally provides 150kW DC rated PV input with eight MPPT trackers, requiring PV input parameters to be considered during system design.

Prepare the Installation Area

The documented cabinet dimensions are 1865 × 1000 × 2500mm, with an approximate system weight of 2700kg.

For the MS-G215-2H2, the manufacturer specifies floor-mounted installation.

Installation planning should account for the documented cabinet dimensions, equipment weight and applicable project access requirements.

Confirm Environmental Requirements

Both models are specified for operation between -20°C and 50°C, with derating above 45°C.

The maximum working altitude is 3,000m.

The cabinet enclosure has an IP54 protection rating and an anti-corrosion grade of up to C5.

The supplied converter documentation for the MS-GS215-2H2 also specifies 15%–85% relative humidity without condensation.

Plan Battery & AC Connections

Both configurations operate within a battery voltage range of 660–864V and provide 100kW AC output at 380/400Vac and 50/60Hz.

The documented AC grid configuration is three-phase.

Electrical connection requirements must be taken from the applicable manufacturer installation documentation for the selected model.

Plan PV Connections – MS-GS215-2H2 Only

For the MS-GS215-2H2, PV system design must account for the documented PV specifications.

These include:

• Rated PV input power: 150kW DC
• Maximum PV input voltage: 1,000V
• MPPT operating voltage range: 180–880V
• Full-load voltage range: 450–850V
• Eight MPPT trackers

The detailed PV connection arrangement must follow the applicable Deye installation documentation for this model.

Plan Communication Connections

Both configurations support ETH and 4G system communication.

The converter provides CAN, RS485 and ETH communication interfaces.

Communication requirements should be incorporated into the system design according to the selected configuration and project requirements.

Complete Pre-Commissioning Checks

Before commissioning, confirm that the selected cabinet configuration matches the project requirements and the documented operating conditions.

The supplied technical information does not include a complete commissioning procedure, terminal assignments, cable specifications or tightening torque values for these exact cabinet models.

These details must be taken from the applicable Deye installation and commissioning documentation rather than inferred from the product specifications.

Deye

Ningbo Deye Inverter Technology Co., Ltd. was founded in 2007 and is a subsidiary of the Deye Group. Deye describes the company as a Chinese high-tech enterprise specialising in integrated solar PV and energy storage solutions for residential, commercial and industrial applications.

Its product portfolio includes PV inverters, hybrid inverters and microinverters, while its energy solutions include C&I ESS products and battery product lines designed for Deye inverter systems. Deye also identifies 100/125kW–2.5MW C&I ESS solutions within its technology portfolio.

Deye states that its focus is on integrated solar PV and energy storage solutions, with dedicated products and solutions covering residential, commercial and industrial applications.