Deye BOS-G-Pack5.1 - 5.12 kWh high-voltage battery module for high-performance PV storage systems

The DEYE BOS-G-Pack5.1 is a reliable, safe and efficiently scalable high-voltage battery module for demanding applications in PV storage systems. With a nominal energy of 5.12 kWh and advanced LiFePO₄ technology, it impresses with high safety, long service life and easy integration into high-voltage systems.

Highlights at a glance

• High-voltage solution: Ideal for modern PV systems and Deye hybrid inverters
   
• Reliable & safe: LiFePO₄ cells with intelligent BMS for maximum protection
   
• Flexible expansion: Can be connected in parallel for scalable energy storage solutions
   
• Easy integration: 19" rack format for space-saving and fast installation
   
• Remote maintenance possible: Supports USB, WLAN (optional) & remote firmware updates

Designed for professional high-voltage systems

With a nominal voltage of 51.2 VDC and 100 Ah capacity, the BOS-G-Pack5.1 is optimally suited for PV dealers, installers and system integrators. The modules are easy to install in racks and require at least four units and a separate control box to form a complete storage system.

The intelligent battery management system (BMS) provides reliable protection against overcharging, deep discharge, overcurrent and temperature deviations and automatically balances voltages between the cells.

Versatile and durable

Thanks to its compact dimensions (440 × 570 × 133 mm) and low weight of only 45 kg, the module is suitable for both commercial and larger private installations. The high-voltage battery can be stored for up to 6 months without recharging, and this without memory effect or loss of performance.

Who is the DEYE BOS-G-Pack5.1 suitable for?

• Installers & project planners integrating high-voltage storage into system solutions
   
• Commercial users needing powerful, expandable storage solutions
   
• PV system providers seeking scalable storage systems with Deye compatibility
   
• Technically sophisticated applications requiring remote maintenance & intelligent control

FAQs about the DEYE BOS-G-Pack5.1

How much energy does one module actually supply?

One module provides 5.12 kWh of gross capacity. Of these, approximately 4.6 kWh are actually usable at 90 % depth of discharge, ideal for modular storage solutions.

Which nominal values apply?

Each module operates at 51.2 V nominal voltage and 100 Ah capacity. The recommended continuous current is 40 A, with a peak current of 50 A possible for a short time.

How many modules can I use?

For a high-voltage tower, at least 4 and a maximum of 12 modules are permitted, which corresponds to around 20 kWh to 61 kWh per tower.

Can I retrofit modules later?

Yes, the system is scalable: up to 12 modules per tower and up to 10 towers can be operated in parallel, resulting in over 300 kWh total capacity.

Which Deye inverters are compatible with the battery?

The storage is fully plug-&-play compatible for all three-phase hybrid inverters of the SUN-xK-HP3 and SUN-xK-BM series without additional hardware or software adaptations.

Scope of delivery Deye BOS-PRO-Pack5.1 high-voltage battery module (5.12 kWh):

Module type

• This is a dedicated high-voltage expansion module for an existing Deye BOS-G system. It requires a separate Deye control box (BMS) for operation.

1 x Deye BOS-G-Pack5.1 battery module (5.12 kWh)

• A dedicated high-voltage battery module with 5.12 kWh, which is stacked onto a control box or another module as part of a battery tower.

1 x connection bridge / series connection cable (short)

• Short, robust cables or a fixed bridge to connect this module with an existing module (or the control box).

1 x grounding cable (short)

• A short protective conductor cable for connection to the grounding point of the neighbouring module.

1 x mounting accessories

• Includes screws or latches to securely stack the module onto an existing unit.

1 x installation instructions for expansion module

• Instructions specifically describing the expansion of an existing tower system.