Deye GB-L-PRO8 - 8.18 kWh Modular High-Voltage Battery System

The Deye GB-L-PRO8 is a powerful and highly flexible high-voltage energy storage system, specially developed for modern residential photovoltaic systems. With a gross capacity of 8.18 kWh offers a reliable solution for maximizing self-consumption and sustainably increasing independence from the public grid.

The system stands out thanks to its modular design and advanced Lithium iron phosphate technology (LiFePO4), which guarantees maximum safety and a long service life. Thanks to its simple stackable design, the system can be installed without complex cabling between the modules and easily expanded as required.

Highlights at a glance

• High safety: The cobalt-free LiFePO4 chemistry ensures maximum safety, thermal stability and a long cycle life.
• Easy installation: Thanks to the modular "plug-and-play" design, stacking assembly is quick and requires no additional cable connections between the battery modules.
• Integrated BMS: The intelligent battery management system monitors each cell individually and protects against overcharging, deep discharge and extreme temperatures.
• Efficient high-voltage technology: The high system voltage reduces conversion losses and optimises efficiency in combination with modern hybrid inverters.
• Emergency power capable: Supports high discharge rates to ensure a safe supply to critical household appliances even during power cuts.
• Robust design: With an IP65 protection rating, the system is dust-tight and protected against water jets, enabling installation in a variety of environments.

Areas of application

The GB-L-PRO8 is the ideal storage solution for compact and efficient energy concepts:

• Self-consumption optimisation
  • Storage of surplus solar power during the day for use in the evening and at night.
• Back-up power supply
  • When used with compatible hybrid inverters, the system provides protection in the event of power cuts (blackout protection).
• Peak shaving
  • Reduction in electricity costs through the buffering of peak loads, particularly in households with heat pumps or electric vehicle charging points.

Installation & Safety Instructions

• Site selection
  • Place the storage unit on a level, load-bearing surface. Ensure adequate ventilation and maintain the recommended minimum distances from walls.
• Protection against extreme temperatures
  • Although the system is designed for a wide temperature range, installation in cool, frost-free indoor areas (e.g. a basement or utility room) extends the service life of the cells.
• Professional commissioning
  • The electrical connection to the inverter and the configuration of the BMS must only be carried out by certified specialists in order to maintain the warranty.

Features

FAQs on the Deye GB-L-PRO8 battery system

Can I expand the system with additional modules at a later date?

Yes.

• Thanks to the modular design, you can flexibly scale the capacity of your storage system to meet growing energy demands by adding compatible battery modules.

Which inverters is the system compatible with?

Primarily with Deye hybrid inverters.

• The system is optimally matched to the high-voltage hybrid inverters from Deye. Please check the current compatibility list for third-party manufacturers before installation.

Why is LiFePO4 used as the cell chemistry?

For superior safety.

• Unlike conventional lithium-ion batteries (NMC), LiFePO4 is chemically much more stable. Even if physically damaged, these cells do not tend to catch fire, making them the safest choice for residential buildings.

Does the system have an integrated heating system for winter operation?

Yes, optional.

• The Deye GB-L-PRO8 system supports an integrated heating function, which enables the battery cells to be charged safely even at low ambient temperatures. This is particularly important for installations in unheated rooms to prevent cell damage in freezing conditions.

What is the maximum discharge power of the 8.18 kWh system?

Depending on the module configuration.

• Thanks to high-voltage technology, the system can deliver high discharge currents. Typically, this 8.18 kWh pack enables a continuous power output of approx. 4 kW to 6 kW, ideal for operating standard household appliances during a power cut.

Scope of delivery Deye GB-L-PRO8 Modular high-voltage battery system (8.18 kWh)

System composition

• This product is a set and consists of three separate main components, which together form an 8.18 kWh high-voltage tower system.

Component 1: Deye GB-L-PRO-BMS (high-voltage control unit & base)

• The central control unit (BMS) that manages the entire high-voltage system. This unit forms the base of the battery tower.

Components 2 & 3: Two Deye GB-L-PRO-BATT high-voltage battery modules (4.09 kWh each)

• Two high-voltage battery modules, each with 4.09 kWh, which are stacked on the BMS unit.

1 x set of battery connection cables (positive & negative)

• A pair of special high-voltage power cables for connecting the BMS unit to a compatible high-voltage hybrid inverter.

1 x communication cable (CAN/RS485)

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

1 x connecting bridge / series connection cable

• Short, robust cables or a fixed bridge to connect the two battery modules in series.

1 x earthing cable

• A protective earth cable for the compliant earthing of the BMS unit.

1 x installation accessories (tower assembly)

• Includes screws or locks to securely connect the three components into a tower.

1 x operating and installation manual

• A printed manual describing the installation of the entire high-voltage tower system.