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 it offers a reliable solution to maximise self-consumption and sustainably increase independence from the public grid.

The system impresses with its modular design and advanced lithium iron phosphate technology (LiFePO4), which guarantees maximum safety with a long service life at the same time. The simple stacking assembly makes it possible to install the system without elaborate cabling between the modules and to expand it easily if required.

Highlights at a glance

• High safety: The cobalt-free LiFePO4 chemistry provides maximum safety, thermal stability and long cycle life.
• Simple installation: Thanks to the modular "plug-and-play" design, stack assembly is quick and requires no extra cable connections between the battery modules.
• Integrated BMS: The intelligent battery management system monitors every 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, especially when used with modern hybrid inverters.
• Emergency power capability: Supports high discharge rates to reliably supply critical household loads even during power outages.
• Robust design: With protection class IP65, the system is dustproof and protected against jets of water, enabling installation in various environments.

Areas of application

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

• Self-consumption optimisation
  • Storage of excess solar power during the day for use in the evening and at night.
• Backup power supply
  • In combination with compatible hybrid inverters, the system offers protection in the event of grid outages (blackout prevention).
• Peak shaving
  • Reducing electricity costs by buffering load peaks, especially in households with heat pumps or electric vehicle charging stations.

Assembly & safety instructions

• Site selection
  • Place the unit on a flat, stable surface. Ensure sufficient ventilation and maintain the recommended minimum distances to walls.
• Protection against extreme temperatures
  • Although the system is designed for a wide temperature range, installing it in cool, frost-free interior rooms (e.g. basement or technical room) will extend the service life of the cells.
• Professional commissioning
  • The electrical connection to the inverter and the BMS configuration must only be carried out by certified professionals in order to preserve the warranty.

Properties

FAQs about the Deye GB-L-PRO8 battery system

Can I expand the system with more modules later?

Yes.

• Thanks to the modular design, you can flexibly adapt your storage system's capacity to growing energy needs by adding additional compatible battery modules.

Which inverters is the system compatible with?

Primarily with Deye hybrid inverters.

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

Why is LiFePO4 used as the cell chemistry?

Because of the superior safety.

• In contrast to traditional lithium-ion batteries (NMC), LiFePO4 is much more chemically stable. Even in the event of mechanical damage, these cells do not tend to ignite, making them the safest choice for residential buildings.

Does the system have integrated heating for winter operation?

Yes, optionally.

• The Deye GB-L-PRO8 system supports an integrated heating function so the battery cells can be charged safely even at low ambient temperatures. This is particularly important for installations in unheated rooms to avoid cell damage during frost.

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. As a rule, this 8.18 kWh package enables a continuous output of approx. 4 kW to 6 kW, ideal for powering standard household appliances during a power outage.

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

System composition

• This product is a set consisting 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), which manages the entire high-voltage system. This unit forms the base of the battery tower.

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

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

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

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

1 x communication cable (CAN/RS485)

• A data cable for communication between BMS and inverter.

1 x connection 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 conductor for earthing the BMS unit in accordance with regulations.

1 x mounting accessories (tower mounting)

• Includes screws or interlocks to safely connect the three components as a tower.

1 x operating and installation manual

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