--- title: "Deye BOS-G25 Pro 23.04 kWh Battery: Specs & Datasheet | ComparePV" description: "Deye BOS-G25 Pro 23.04 kWh home battery. Specs: 25.6 kW continuous, 6000 cycles, 290.0 kg, 10 yrs warranty." source: "https://comparepv.com/battery/deye-bos-g25-pro" updated: 2026-01-25 --- # Deye BOS-G25 Pro ## Identity - **Manufacturer:** Deye - **Model:** BOS-G25 Pro - **Series:** BOS-G Pro - **Usable energy:** 23.04 kWh - **Voltage class:** High voltage - **Cell technology:** LFP ## How it compares Compared against 29 batteries from 20 to 50 kWh. Ranks are within that class. | Measure | This battery | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | Round-trip efficiency | - | 95.0% | | | | Power per kWh | 1.11 | 0.51 | Strong - top 13% | 2 | | Cycle life | 6000 | 6000 | Typical | 2 | | Weight per kWh | 12.6 | 11.1 | Weak - bottom 20% | 23 | | Warranty | 10 yrs | 10 yrs | Typical | 2 | ## Specification ### Capacity - **Usable energy:** 23.04 kWh - **Nominal energy:** 25.60 kWh - **Depth of discharge:** 90 % - **Module energy:** 5.12 kWh - **Modules per stack:** 5 to 16 - **Max system capacity:** 81.9 kWh - **Units in parallel:** 16 ### Power - **Continuous discharge power:** 25.60 kW - **Continuous charge power:** 25.60 kW - **Peak discharge power:** 32.00 kW - **Max discharge current:** 100 A - **Max charge current:** 100 A - **Peak discharge current:** 125 A ### Efficiency and lifetime - **Cycle life:** 6000 cycles - **Capacity at end of life:** 70 % ### Cells and voltage - **Voltage class:** High voltage - **Nominal voltage:** 256.0 V - **Operating voltage:** 220 to 292 V - **Cell technology:** LFP - **Cell management:** Cobalt-free ### Physical - **Dimensions:** 1629 × 530 × 602 mm - **Weight:** 290.0 kg - **Enclosure:** IP20 (battery enclosure) - **Mounting:** rack - **Operating temperature:** -20 to 55 °C ### Compatibility - **Compatible inverters:** Deye (SUN-50K-SG01HP3-EU-BM4 / SUN-60/70/75/80K-SG02HP3-EU-EM6) - **Protocols:** CAN2.0, RS485 ### Warranty and certificates - **Warranty:** 10 years - **Certifications:** UN38.3, CE, CE-EMC, IEC62040, CEC, VDE ### Pros - **LiFePO4: >6,000 cycles** - LFP cells are reported to withstand over 6,000 cycles at 0.5 C and a 70% Depth of Discharge (DoD) at 25°C, which is significantly better than typical NMC-based storage systems (approximately 3,000-4,000 cycles). In practice, this translates to over 16 years of use with a single cycle per day, resulting in a lower Levelized Cost of Energy (LCOE). - **Modularity: 5.12 kWh per rack (19")** - Each module provides 5.12 kWh in a standard 19" rack format, allowing for precise matching of capacity to needs and expansion of the system without replacing the entire system. This is an advantage over compact all-in-one units, which do not offer this level of scalability. - **10-year warranty + product line active until 2026** - Deye offered a 10-year warranty, and the product brochure was updated in January 2026 (v1.0), which confirms that the manufacturer actively supports this product line. This provides the investor with the assurance of ongoing service and technical support throughout the warranty period. - **CAN2.0 + RS485 dual-protocol** - Support for both communication standards (CAN 2.0 and RS485) ensures native compatibility with a wide range of hybrid inverter ecosystems (including Deye, Growatt, Solis, SMA, and Victron). This eliminates the need for protocol converters, simplifying integration. - **Wide operating temperature range: -20°C to +55°C** - The certified operating range of -20°C to +55°C allows the system to be installed in unheated boiler rooms or cool garages without risking warranty loss - a significant advantage in a central European climate, where winter temperatures can drop several degrees below zero in technical areas. ### Cons - **IP20: Intended for indoor use only.** - The IP20 protection level only protects against objects larger than 12.5 mm and provides no protection against moisture. Competitive rack-HV systems, such as BYD HVM (IP55), allow for installation in outdoor or humid environments. This limits the flexibility of location - a dry, enclosed technical room is required. ## About this series High-voltage energy storage solutions in the 19-inch rack standard, designed for quick and predictable installation and service. The key advantage lies in the **LiFePO4 (LFP)** chemistry - compared to NMC, it offers higher thermal stability, greater operational safety, and excellent durability in daily charging and discharging cycles. Parameter control is managed by an **intelligent BMS**, which balances the cells and protects the system from common operational risks, while additional fire safety solutions are also incorporated. The BOS-G Pro features **modular scalability** - you can expand capacity as renewable energy consumption or backup power needs grow, without replacing the entire system. Its declared lifespan, measured in thousands of cycles, along with the **long warranty**, translates to lower energy costs over time and reduced investment risk. Communication via CAN and RS485 facilitates **compatibility with hybrid inverters** and the construction of off-grid, on-grid, and residential/commercial installations. ## Questions ### How many Deye BOS-G Pro modules can be connected, and what is the maximum capacity that can be achieved? The BOS-G Pro series is modular and scalable - each module has a capacity of 5.12 kWh (100 Ah, 51.2 V). Up to 5 modules can be connected in parallel, resulting in a maximum of 25.6 kWh in a single system. Thanks to the 19-inch rack standard, expansion involves simply inserting another module, without the need to replace the inverter or wiring. ### How many cycles does the Deye BOS-G Pro battery last, and what is the warranty? The manufacturer guarantees at least 6000 full charge and discharge cycles while maintaining 70% of its original capacity (EOL). Deye provides a 10-year manufacturer's warranty, starting from the date of installation, covering manufacturing defects and excessive capacity degradation. With typical use of one cycle per day, this corresponds to more than 16 years of operation. ### Why does the BOS-G Pro use LiFePO4 batteries instead of NMC batteries? The chemistry of LiFePO4 (LFP) batteries is safer thermally than NMC batteries - they do not release oxygen during failure, which significantly reduces the risk of fire. Furthermore, LFP batteries have a higher cycle life and a smaller capacity decrease over time. This translates to a longer lifespan and lower energy costs for the average homeowner over the years, despite a slightly higher initial purchase price. ### Which hybrid inverters are compatible with the Deye BOS-G Pro? The battery communicates via CAN 2.0 and RS485 interfaces, ensuring compatibility with most popular hybrid inverters available on the European market, including the Deye SUN-xK-SG04LP3 model and compatible models from other manufacturers that support high-voltage BMS (Battery Management System) protocols. It is advisable to check the current compatibility list with the installer or distributor before making a purchase. ### Does the Deye BOS-G Pro system function properly in low temperatures, such as in an unheated garage during winter? The specified operating temperature range is from -20°C to +55°C, so an unheated garage in Poland does not pose a problem for the battery's operation. However, it is important to note that at temperatures close to zero, the usable capacity may temporarily decrease - this is a characteristic of lithium-ion batteries, independent of their chemistry. The BMS automatically protects the cells from charging in extreme cold. ### Is the Deye BOS-G Pro energy storage system suitable for off-grid (stand-alone) installations? Yes, the BOS-G Pro can operate in both on-grid and off-grid modes, as well as in a backup mode. The configuration depends on the chosen hybrid inverter - the BOS-G Pro only provides energy storage, while the inverter provides the switching logic. The system is suitable for homes, small businesses, and facilities that require continuous power supply. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/batteries/bos-g-pro-50k-80k-2025-05-30-4eaca6912350.pdf) ## Alternatives | Battery | Usable energy | Round-trip | Power | Voltage | Difference | | --- | --- | --- | --- | --- | --- | | [Deye BOS-G25](https://comparepv.com/battery/bos-g25) | 23.04 kWh | | | HV | Similar on paper | | [FoxESS ECS4300H-H6](https://comparepv.com/battery/fox-ess-ecs4300h-h6) | 22.39 kWh | 95.0% | | HV | -0.6 kWh | | [Pylontech Force H1 (FH48074)](https://comparepv.com/battery/pylontech-force-h1-fh48074) | 22.37 kWh | | | HV | -0.7 kWh | | [Deye GB-L (6 modules in series)](https://comparepv.com/battery/ningbo-deye-ess-technology-co-ltd-gb-l-6-modules-in-series) | 22.1 kWh | | 24.6 kW | HV | -0.9 kWh, -1.0 kW | | [BYD Battery-Box Premium HVM 22.1](https://comparepv.com/battery/byd-battery-box-premium-hvm-22-1) | 22.08 kWh | 96.0% | | HV | -1.0 kWh | | [Deye GB-L24](https://comparepv.com/battery/gb-l24) | 22.08 kWh | | | HV | -1.0 kWh | | [Deye GB-SL-EU (6 modules in series)](https://comparepv.com/battery/gb-sl-eu-6-modules-in-series) | 22.08 kWh | | | HV | -1.0 kWh | | [Dyness Tower Pro TP23](https://comparepv.com/battery/dyness-tower-pro-tp23) | 21.89 kWh | 95.0% | 23.0 kW | HV | -1.1 kWh, -2.6 kW | --- Source: https://comparepv.com/battery/deye-bos-g25-pro