Deye GB-L-PRO20 - 20.45 kWh modular high-voltage battery system
Description
Product information
The Deye GB-L-PRO20 is a powerful and highly flexible high-voltage energy storage system that has been specially developed for modern photovoltaic systems in homes and small businesses. With a gross capacity of 20.45 kWh it provides a massive energy reserve to maximise independence from the public grid and reliably supply even large households or commercial operations.
The system is supplied including the GBL-PRO BMS, which, as an intelligent control unit, monitors the entire tower. Thanks to the advanced lithium iron phosphate technology (LiFePO4), the system guarantees maximum safety with a long service life. The simple stack assembly enables quick installation without complex cable connections between the modules.
Highlights at a glance
- High safety: The cobalt-free LiFePO4 chemistry ensures maximum safety, thermal stability and a long cycle life of over 6000 cycles.
- Central GBL-PRO BMS: The intelligent control unit monitors each cell individually and protects the overall system against overcharging, deep discharge and thermal problems.
- Simple installation: Thanks to the modular "plug-and-play" design, the stack assembly is quick and requires no additional cable connections between the battery modules.
- Efficient high-voltage technology: The high system voltage reduces conversion losses and optimises efficiency when combined with modern hybrid inverters.
- Emergency power capability: Supports high discharge rates to ensure the safe supply of critical loads or entire households even during power outages.
- Robust design: With protection class IP65, the system is dustproof and protected against water jets, enabling installation in various environments.
Areas of application
The GB-L-PRO20 is the ideal storage solution for demanding energy concepts:
- Optimisation of in-house electricity
- Storage of surplus solar power during the day for use in the evening and at night, even with high base consumption.
- Backup power supply
- In conjunction with compatible hybrid inverters, the system offers protection against grid failures (blackout prevention) for the entire house.
- Peak load shaving
- Reducing electricity costs by buffering peak loads, especially in households with multiple e-charging stations or heat pumps.
Installation & safety instructions
- Site selection
- Place the storage system on a level, load-bearing surface (pay attention to weight). Ensure sufficient ventilation and observe the recommended minimum distances.
- Protection against extreme temperatures
- Although the system is designed for a wide temperature range, installation in cool, frost-free indoor spaces (e.g. basement or technical room) extends the life of the cells.
- Professional commissioning
- The electrical connection to the inverter and the configuration of the GBL-PRO BMS may only be carried out by certified specialist personnel.
Properties
| Model | **Deye GB-L-PRO20** |
| Nominal energy | **20.45 kWh** |
| Nominal voltage | **512 V** (high voltage) |
| Battery type | Lithium iron phosphate (LiFePO4) |
| Max. charge/discharge current | 50 A |
| Usable energy (90% DoD) | 18.41 kWh |
| Degree of protection | **IP65** (indoor/outdoor installation) |
| Cycle life | ≥ 6000 cycles (@25°C, 90% DoD) |
| Certifications | CE, IEC62619, VDE2510-50, UN38.3 |
FAQs about the Deye GB-L-PRO20 battery system
Can I expand the system with additional modules later?
Yes.
- Thanks to the modular system, you can flexibly adapt the capacity of your storage system. The GBL-PRO BMS automatically detects new modules and integrates them into the battery management.
Which inverters is the system compatible with?
Primarily with Deye hybrid inverters.
- The system is optimally matched to Deye high-voltage hybrid inverters. Please check the current compatibility list for third-party devices before installation.
Why is LiFePO4 used as a cell chemistry?
Because of its superior safety.
- In contrast to conventional lithium-ion batteries (NMC), LiFePO4 is much more chemically stable. Even in the event of mechanical damage, these cells are not prone to ignition.
Does the system have integrated heating for winter operation?
Yes, optional.
- The Deye GB-L-PRO20 system supports an integrated heating function that allows the battery cells to be charged safely even at low ambient temperatures. This effectively protects the cells when installed in unheated rooms.
What is the maximum discharge power of the 20.45 kWh system?
Depends on module configuration.
- Thanks to the high-voltage technology, the system can provide high discharge currents. As a rule, this 20.45 kWh package allows a continuous output of approx. 10 kW to 15 kW, ideal for wallboxes or air conditioning systems.
Scope of delivery Deye GB-L-PRO20 Modular high-voltage battery system (20.45 kWh):
System composition
- This product is a set and consists of six separate main components, which together form a 20.45 kWh high-voltage tower system.
Component 1: Deye GBL-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 to 6: Five Deye GB-L-PRO-BATT high-voltage battery modules (each 4.09 kWh)
- Five high-voltage battery modules each with 4.09 kWh that are stacked on the BMS unit and on top of each other.
1 x set battery connection cables (plus & minus)
- 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.
4 x connecting bridge / series connection cable
- Short, robust cables or fixed bridges to connect the five battery modules in series.
1 x earth cable
- A protective conductor cable for proper earthing of the BMS unit.
1 x mounting accessories (tower assembly)
- Includes screws or locks to securely connect the six components into a tower.
1 x operation and installation manual
- A printed manual describing the installation of the entire high-voltage tower system.
Properties
| Capacity: | 20.45kWh |
|---|---|
| Charging/discharging current: | 40A |
| Tension: | 512V |
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