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Deye SE-G5.1 Pro-B — is a low-voltage lithium iron phosphate (LiFePO₄) battery with a capacity of 100Ah and a nominal voltage of 51.2V, which provides 5.12kWh of energy. It is designed for residential and commercial use to increase the self-consumption ratio in energy storage systems (ESS). Thanks to the flexible modular design, the batteries can be connected in parallel up to 64 units, achieving a maximum total capacity of 327kWh.
The battery is characterized by intelligent management, high efficiency and safety of operation, as it does not contain cobalt. It is equipped with an intelligent BMS system that provides comprehensive protection, supports automatic connection to the grid, remote monitoring and updates via USB flash drive. The design allows for wall, floor or standard 19-inch rack mounting, and a lifespan of over 6,000 cycles ensures long-term and reliable system operation.
Key Benefits
- High energy efficiency: 5.12 kWh (useful energy 4.6 kWh) at 51.2 V and 100 A·h.
- Flexible scaling: supports up to 64 modules in parallel connection to achieve a capacity of 327 kWh (max. 32 units without external configuration).
- Intelligent BMS: provides comprehensive protection, easy maintenance and remote monitoring support.
- Environmental and safety: using non-toxic, cobalt-free LFP materials that do not pollute the environment.
- Compatibility: supports connection to 12 kW and 15 kW inverters with various parallel connection options (from 3 to 12 batteries).
- Safety certification: UN38.3, IEC62619, CE, UK, VDE 2510-50, CEI 0-21, FCC, UL1973, UL9540A.
- Easy installation: wall-mounted, floor-mounted or installed in a standard 19-inch cabinet (rack-mounted) with a depth of ≥600 mm.
- Long service life: over 6000 cycles at 90% depth of discharge and 70% EOL.
- 10 year warranty — official support (energy throughput 16 MWh at 70% EOL).
Technical specifications
- Model: SE-G5.1 Pro-B
- Battery type: LiFePO₄
- Nominal module voltage: 51.2 V
- Operating voltage: 43.2–57.6 V
- Capacity: 100 Ah
- Energy per module: 5.12 kWh
- Module size: 440 × 133 × 540 mm
- Module weight: 45 kg
- Built-in circuit breaker: 125A 2P 60VDC
- Number of parallel modules: Max. 64 units.
- Charge/discharge current: 50 A (recommended), 100 A (nominal), 150 A (peak 2 min at 25°C)
- Operating temperature: charge 0–55°C (additional heating: −20°C–55°C) / discharge −20–55°C
- Humidity: 5–95%
- Communication port: CAN2.0, RS485
- Housing protection degree: IP20
- Warranty: 10 years
- Lifespan: ≥6000 cycles (25°C ± 2°C, 0.5C/0.5C, 90% DOD, 70% EOL)
Features
The Deye SE-G5.1 Pro-B battery is designed to build efficient residential and commercial energy storage systems. Its design allows for easy scaling of the system capacity up to 327 kWh thanks to the ability to connect in parallel. Thanks to the intelligent BMS system, the user receives comprehensive protection, as well as convenience through automatic connection to the network and support for firmware updates via USB.
Certified to numerous international safety standards, the battery supports high discharge power and has natural cooling. It features a convenient LED status indicator and is optimally combined with Deye 12kW and 15kW inverters, allowing for backup power solutions from 1 to 4 hours.
Applications
- Residential and commercial Energy Storage Systems (ESS) solutions;
- Hybrid systems with Deye solar inverters (12kW and 15kW);
- Increase in self-consumption;
- Reliable backup power with flexible autonomy solutions for 1-4 hours;
- Green energy projects requiring non-toxic components.