Deye BOS-G 45 PRO high-voltage storage set 46.08 kWh

The Deye BOS-G 45 PRO high-voltage storage set is a powerful storage solution for commercial, industrial and demanding private customers. With 46.08 kWh capacity, LiFePO4 technology and intelligent battery management system, it offers maximum efficiency, safety and flexibility for modern energy storage systems.

Highlights at a glance

• High storage capacity: 46.08 kWh for high-performance energy applications
• High usable energy: up to 41.47 kWh at 90 percent depth of discharge
• Modular and scalable: Expansion through parallel connection of up to 16 racks
• Intelligent BMS: Monitoring of cell voltage, temperature, current and state of charge
• Long-life cell technology: over 6000 cycles with 70 percent remaining capacity

Efficient energy storage for professional applications

The BOS-G 45 PRO uses state-of-the-art lithium iron phosphate cells for high cycle stability and safety. With a nominal system voltage of about 460 volts and an operating voltage range between 395 and 525 volts, the system offers reliable performance with high energy availability at the same time.

Flexible system architecture for growing requirements

The storage system is modular and can easily be expanded with additional battery racks. It supports up to 16 racks connected in parallel and AC-parallel operation of up to 10 inverters. In this way, the system grows with the requirements and offers investment security for the future.

Intelligent safety features and monitoring

An integrated battery management system ensures the continuous monitoring of all cells and protects against overcharging, deep discharge, overcurrent and critical temperatures. The cell voltages are automatically balanced, optimising the service life of the batteries.

Who is the Deye BOS-G 45 PRO storage set suitable for?

This storage system is ideal for:

• Businesses with consistently high energy consumption or peak loads
• PV systems with high storage needs and a high proportion of self-consumption
• Private households with increased electricity demand and a focus on self-sufficiency
• System solutions in combination with Deye inverters and charging infrastructure

FAQs about the Deye BOS-G 45 PRO high-voltage storage

Can the system be expanded or connected in series?

Yes, modular expansion is possible. Up to 12 modules in series (max. 61.44 kWh) are possible and parallel operation enables flexible capacity expansion. Up to 16 racks and 10 inverters can be operated in parallel.

What total and usable storage capacity does the system offer?

The BOS‑G 45 PRO consists of 9 LiFePO₄ modules each with 5.12 kWh, resulting in a gross storage capacity of 46.08 kWh. With a typical depth of discharge (DoD) of 90 %, you have almost 41.5 kWh net available.

In which temperature range can the storage system be used?

The BOS‑G PRO supports a temperature range of −20 °C to +55 °C for discharging and 0 °C to +55 °C for charging. This ensures the system remains efficient under a wide range of climate and operating conditions.

Which protective functions does the integrated BMS provide?

The intelligent Battery Management System (BMS) continuously monitors critical parameters and automatically protects the system against overvoltage and undervoltage, overcurrent, short circuit, over- or under-temperature. It also manages cell equalisation to ensure uniform cell voltages.

What fire protection and installation environment requirements must be observed?

The system is designed for dry indoor areas only (protection class IP20). In the EU, a fireproof room (T60) is also required – for example with fire-resistant walls, doors and windows. Installation in a standard 19-inch rack requires stable and well-ventilated installation.

Scope of delivery Deye BOS-G45 PRO high-voltage storage set (46.08 kWh) with rack system:

System composition

• This product is a set and consists of a rack cabinet and the individual plug-in modules (BMS and 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) that is inserted into the rack cabinet as a module.

Component 3 to 11: Nine Deye BOS-G-PRO-Pack5.1 high-voltage battery plug-in modules (each 5.12 kWh)

• Nine 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.

9 x connection bridge / series connection cable

• Short and robust cables or fixed bridges to connect the ten plug-in modules (BMS + 9 batteries) in the rack to each other.

1 x earthing cable

• A protective conductor cable for grounding the rack system as required by regulations.

1 x mounting accessories (rack mounting)

• Includes screws and rails for fixing the modules inside the rack and 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.