Deye BOS-G 55 PRO high-voltage storage set 56.32 kWh

The Deye BOS-G 55 PRO high-voltage storage set is a powerful and flexible storage solution for demanding energy projects in the commercial and private sectors. With a gross capacity of 56.32 kWh, intelligent BMS technology and proven LiFePO4 cell chemistry, the system offers maximum safety, efficiency and future-proofing.

Highlights at a glance

• High storage capacity: 56.32 kWh for off-grid applications and peak load coverage
• Usable energy: approx. 50.52 kWh at 90 per cent depth of discharge
• Modular and scalable: Parallel connection of up to 16 battery racks possible
• Longevity guaranteed: Over 6000 charging cycles with 70 per cent residual capacity
• Intelligent control: Integrated BMS with automatic cell balancing

Efficient high-voltage storage for modern energy systems

With a system voltage of around 563 volts and a wide operating voltage range, the BOS-G 55 PRO fulfils the requirements of modern photovoltaic and storage systems. The LiFePO4 technology used ensures high thermal stability, low self-discharge and an exceptionally long service life.

Scalable system architecture for maximum flexibility

The Deye BOS-G 55 PRO system has a modular design and can be customised to individual project requirements. Up to 16 battery racks can be operated in parallel. In addition, parallel AC operation of up to 10 inverters is possible, which is particularly advantageous for commercial applications.

Intelligent safety with integrated BMS

An integrated battery management system reliably protects the system against overcharging, deep discharge, overcurrent and temperature deviations. Cell balancing is automatic and ensures the even utilisation of all battery modules.

Who is the Deye BOS-G 55 PRO storage set suitable for?

This storage system is ideal for:

• Companies with constantly high power requirements or off-grid applications
• Operators of larger PV systems focussing on self-consumption and self-sufficiency
• Private households with above-average energy requirements
• System integrators who rely on proven high-voltage storage solutions

FAQs about the Deye BOS-G 55 PRO high-voltage storage set

What storage capacity does the BOS‑G 55 PRO offer?

The system consists of 11 LiFePO₄ modules with a gross capacity of 5.12 kWh each, totalling approx. 56.32 kWh. Of this gross capacity, around 50.7 kWh net is available due to the recommended extraction depth of 90 % DoD.

How durable is the system and how long is the warranty?

Thanks to highly stable LiFePO₄ cells, the BOS‑G PRO achieves an impressive shelf life of ≥ 6000 charging cycles (at 0.5 C → approx. 70 % DoD, 25 ± 2 °C). The system also comes with a 10-year manufacturer's warranty, offering comprehensive safety and reliability.

What are the requirements for the installation environment?

The BOS‑G 55 PRO is only suitable for dry indoor areas (protection class IP20). For operation in the EU, Deye also requires a fireproof room with a T60 protection class. The modules are installed in a standardised 19″ rack, which requires a stable and well-ventilated environment.

Which inverters is the system compatible with?

The set contains the BOS‑G‑PDU‑2 high-voltage cluster control box (200–1000 V DC, 100 A). This makes it officially compatible with Deye SUN hybrid inverters from the SUN‑30K/35K/40K/50K/60K/80K series (SG01HP3 series) – firmware updates via USB or Wi‑Fi provide additional flexibility.

How environmentally friendly and storable is the system?

Thanks to LiFePO₄ technology, the system is non-toxic, pollutant-free and free from memory effects. It is also very storable; unused modules can be stored for up to 6 months without recharging and without any loss of performance.

Scope of delivery Deye BOS-G55 PRO High-voltage storage set (56.32 kWh) with rack system:

System composition

• This product is a set and consists of a rack cabinet and the 12 individual plug-in modules (1x BMS and 11x batteries).

Component 1: Deye Rack system / battery cabinet

• A cabinet to house the BMS unit and the battery modules, often with castors and feet.

Component 2: Deye Control box / BMS plug-in module

• The central control unit (BMS/BCCB), which is inserted into the rack cabinet as a module.

Components 3 to 13: Eleven Deye BOS-G-PRO-Pack5.1 high-voltage battery slide-in modules (5.12 kWh each)

• Eleven pure high-voltage battery modules, which are also inserted into the rack cabinet.

1 x set of battery connection cables (plus & minus)

• A pair of special high-voltage power cables to connect the BMS module to a compatible high-voltage hybrid inverter.

1 x communication cable (CAN/RS485)

• A long data cable for communication between the BMS module and the inverter.

11 x connection bridge / series connection cable

• Short, robust cables or fixed bridges to connect the twelve plug-in modules (BMS + 11 batteries) in the rack.

1 x earthing cable

• A protective conductor cable for earthing the rack system in accordance with regulations.

1 x mounting accessories (rack mounting)

• Includes screws and rails for mounting the modules within the rack as well as material for anchoring the cabinet to the floor.

1 x operating and installation manual

• A printed manual describing the assembly of the complete rack system.