Deye BOS-GL40 / BOS-GH40 Small-Scale C&I ESS Solution | Rack-Mounted Battery | UL9540A UL1973 Certified | 10 Years Warranty
- Convenient & Scalable: 19-inch embedded design, supports remote monitoring/upgrades, and parallel module connection
- Safe & Durable: Uses safe LFP battery chemistry with a long lifespan and operates in a wide temperature range (-20°C to 55°C)
- Intelligent Protection: Features automatic management of charge/discharge and protection against common battery issues (over-discharge, over-charge, etc.)
- Eco-Friendly: Non-toxic and non-polluting modules
- High Performance: Low self-discharge, no memory effect, and excellent shallow charge/discharge performance
- Certified & Warrantied: Comes with key industry certifications and a 10-year warranty
See the specs>
Deye Summer BOS Series: Small-Scale C&I ESS Solution
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Deye BOS‑GL40 (Low‑voltage) and BOS‑GH40 (High‑voltage)are rack‑mounted, LiFePO₄ battery modules (5.12 kWh per unit) that combine into scalable ESS stacks with nominal energies up to ~41 kWh
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Designed for small to medium C&I applications such as peak‑shaving, backup power, load‑shifting, and microgrids
Key Features Across the Series:
- Convenient: Features a 19-inch embedded design, supports optional USB and Wi-Fi upgrades, and allows for remote monitoring and upgrades (compatible with Sol-Ark inverters). Multiple battery modules can be connected in parallel for scalability.
- Safe and Reliable: Utilizes LFP (LiFePO4) battery chemistry for safety, long lifespan, and high energy density. The modules are non-toxic, non-polluting, and eco-friendly. They can operate in a wide temperature range from -20°C to 55°C.
- Intelligent Functions: Equipped with protection against over-discharge, over-charge, over-current, and over-high or low temperatures. They automatically manage charge/discharge cycles and balance current/voltage. These batteries also feature low self-discharge (up to 6 months without charging on the shelf) and no memory effect, offering excellent performance in shallow charge and discharge scenarios.
The BOS-GL40 is designed for rack mounting and come with a 10-year warranty, ensuring long-term performance and peace of mind. They support a recommended 90% depth of discharge and can operate at altitudes up to ≤2000m with a humidity range of 5% ~ 85%RH. Status indicators (Yellow for Battery High Voltage Power On, Red for Battery System Alarm) provide clear operational feedback.
Why It Matters for Small‑Scale C&I
These modules offer a perfect balance:
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Scalable architecture—ideal for 40 kWh systems with option to scale higher via stacking
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High cycle durability supports frequent cycling, peak management, and backup applications.
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Flexible integration, compatible with industry‑standard hybrid inverters (e.g., Deye and Sol‑Ark)
Technical Specs (BOS‑G40)
| Feature | Specification |
|---|---|
| Nominal Capacity | 40.96 kWh (8 × 5.12 kWh modules) |
| Nominal Voltage | ~409.6 V DC |
| Voltage Range | 333 – 468 V DC |
| Cycle Life | ≥ 6000 (@90% DoD) |
| Temperature Range | Charge: 0 – 55 °C; Discharge: –20 – 55 °C |
| Certifications | UL 1973, UL 9540A, CE, IEC 62619, VDE 2510‑50, UN38.3 |
| Rack Design | 19″ refrigerated; front-serviceabl |
Product Expansion:
Download
Datasheet:
Deye_BOS-GL60_BOS-GH60_GH40_Datasheet.pdf
User Manual:
Deye BOS-GH User Manual
Deye BOS-GL User Manual
Statement
Deye statement-on-battery-expansion-and-insulation-fault.pdf
ABOUT Deye
Ningbo Deye Technology Co., Ltd. is a large-scale manufacturing technology enterprise integrating R&D, design, production, sales, and services.Driven by innovation, with a global vision and forward-looking thinking, Deye is devoted to innovation and change following the trend of the industry, producing “intelligent, healthy, energy-saving, and environment-friendly” products.
Relying on the advantages of China’s vast market and powerful Internet technology resources, Deye has become a brand rooted in China and well-known in the world, an innovator and leader in new energy inverter technology and frequency conversion control core technology, a leading brand in the high-end environmental electrical appliance industry and a famous company in the air-conditioning heat exchanger industry.
So far, Deye has realized a layout for its diversified development drawing on the dual-core drives of its independent brand and supporting products.
FAQ
It is a high-voltage lithium battery energy storage system designed for commercial and industrial (C&I) solar + storage applications, supporting peak shaving, backup power, and energy optimization.
The main difference is system capacity and configuration scale. BOS-GL60 supports larger energy storage clusters and higher energy throughput compared to BOS-GL40, making it suitable for bigger commercial loads.
The system uses Lithium Iron Phosphate (LiFePO₄ / LFP) batteries, known for high safety, long cycle life, and thermal stability.
Yes. Both BOS-GL40 and BOS-GL60 are modular systems, allowing parallel expansion to increase total capacity depending on project requirements.
Yes. It is designed to work with hybrid and grid-tied inverters, especially compatible with systems like Deye hybrid inverter platforms for seamless integration.
The system includes multi-layer protection such as over-voltage, over-current, short-circuit, temperature monitoring, and battery management system (BMS) control.
Typical applications include factories, commercial buildings, solar farms, microgrids, and energy backup systems for critical infrastructure.
The BOS-GL series is designed for long-term operation, typically supporting 6,000+ cycle life depending on depth of discharge and operating conditions.
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