BOS-G Pro High-Voltage Battery · 25.6–81.92 kWh
BOS-G Pro (G25–G80)
25.6–81.92 kWh
19-inch rack-mounted high-voltage LFP for small-scale C&I storage, 25.6–81.92 kWh from 5–16 stackable 5.12 kWh modules (BOS-G25 Pro … BOS-G80 Pro). The alternative to BOS-G in Deye's AU configurations; an outdoor cabinet build is listed separately. Cobalt-free LiFePO4, 100% usable (100% DoD), ≥6000 cycles, aerosol fire suppression, up to 16 racks in parallel.
- System energy
- 25.6–81.92 kWh
- Usable energy
- 25.6–81.92 kWh (100% DoD)
- Modules
- 5–16 × 5.12 kWh
- System voltage
- 256–819.2 V
- Chemistry
- LiFePO4 (cobalt-free)
- Nominal current
- 100 A (peak 125 A)
- Cycle life
- ≥6000 (70% EOL)
- Warranty
- 10 years per Deye datasheet — confirm terms with Suncloud
Specifications
Module
- Cell chemistry
- LiFePO4
- Module energy
- 5.12 kWh
- Module nominal voltage
- 51.2 V
- Module capacity
- 100 Ah
System
- Models
- BOS-G25 Pro … BOS-G80 Pro (12 configurations)
- Modules in series (optional)
- 5 (min) – 16 (max)
- System nominal voltage
- 256 V (G25) – 819.2 V (G80)
- System operating voltage
- 220–292 V (G25) … 704–934.4 V (G80)
- System energy
- 25.6 – 81.92 kWh (5.12 kWh per module step)
- System usable energy
- 25.6 – 81.92 kWh (= system energy at 100% DoD)
- Rated DC power
- 25.6 – 81.92 kW
- Recommended depth of discharge
- 100%
Charge/discharge
- Recommended current
- 50 A
- Nominal current
- 100 A
- Peak discharge
- 125 A (2 min, 25 °C)
Components
- Cluster control box
- BOS-G-PDU-2 · 200–1000 V DC · 100 A nominal · 120 A max. · 440 × 570 × 150 mm · 19 kg
- Battery module
- BOS-G-Pack5.1 · 100 A nominal · 120 A peak · 440 × 585 × 133 mm · 46 kg
- Inverter connection
- Deye SG01HP3 / SG02HP3 hybrid · SUN-10–25K-SG01HP3-AU-AM2 (Deye's AU build table lists 12–25K), with the optional BOS-G55-Cabinet-AP-B adapter kit · direct to SUN-29.9–50K-SG01HP3-AU-BM3/BM4 · BOS-G80 Pro clusters on SUN-80K-SG02HP3-AU-EM6
- AU installation
- Over-current protection and isolation device that isolates both poles together, between the battery and the inverter · battery–inverter communication cable max. 30 m
General
- Working temperature
- Charge 0–55 °C · Discharge −20–55 °C
- Storage temperature
- 0–35 °C
- Communication port
- CAN 2.0 / RS485
- Humidity
- 5%–85% RH
- Altitude
- ≤3000 m
- IP rating
- IP20
- Dimensions (W×D×H)
- 530 × 602 × 1629 mm (5–8 modules) · 530 × 602 × 2219 mm (9–12) · 1060 × 602 × 1629 mm (13–16)
- Weight (approx.)
- 290 kg (G25) – 837 kg (G80)
- Installation
- Rack mounting (19″), indoor · outdoor in a BOS-G55-Cabinet or BOS-G50-Cabinet
- Cycle life
- ≥6000 (25 °C ± 2 °C, 0.5C/0.5C, 70% EOL)
- Certification
- UN38.3 / CE / CE-EMC / IEC62040 / VDE
- Warranty
- 10 years per Deye datasheet — confirm terms with Suncloud
Highlights
- Modular HV stack — combine 5–16 × 5.12 kWh modules (BOS-G-Pack5.1) for 25.6–81.92 kWh per cluster, in 12 configurations from BOS-G25 Pro to BOS-G80 Pro.
- 100% usable energy — rated at 100% depth of discharge, so system usable energy equals nameplate system energy (test conditions: 100% DOD, 0.3C charge/discharge at 25 °C).
- 19-inch embedded module design for quick installation and maintenance, with up to 16 racks in parallel.
- Cobalt-free LiFePO4 with intelligent BMS (over-charge/discharge, over-current and temperature protection plus cell balancing).
- Aerosol fire suppression support and a wide −20 °C to 55 °C working range.
- ≥6000 cycles at 100% DoD (70% EOL), with a 10-year warranty per Deye’s datasheet.
Where BOS-G Pro fits
Deye’s AU configuration list offers BOS-G Pro as the alternative to BOS-G in every G-family build. BOS-G is the primary option. The two batteries use different control boxes (BOS-G-PDU-2 here, HVB750V/100A-EU on BOS-G) and different modules (BOS-G-Pack5.1 here, BOS-GM5.1 on BOS-G).
For outdoor sites, see the BOS-G Outdoor Solution. A BOS-G55-Cabinet (IP55) holds one BOS-G-PDU-2 and up to 11 BOS-G-Pack5.1 modules, and the taller BOS-G50-Cabinet is IP54.
Figures are from the Deye BOS-G Pro Outdoor Solution brochure (AU, V1.0, 2026-09-07), the BOS-G55-Cabinet datasheet (V1.0, 2026-09-08), the BOS-G Pro Series brochure (V1.0, 2025-12-18), the BOS-G Pro installation and operation instructions (Issue01, 2025-12-17), Deye’s BOS-G Pro + 50K & 80K solution sheet (AU, V1.0, 2025-07-22) for the SUN-80K pairing, and Deye’s AU indoor/outdoor configuration list (V1.0, 2026-09-10). The Series brochure and the installation instructions (both December 2025) list up to 17 modules (BOS-G85 Pro, 87.04 kWh). The newest AU documents, the Outdoor Solution brochure (2026-09-07) and the AU configuration list (2026-09-10), cap a cluster at 16 modules (BOS-G80 Pro, 81.92 kWh), so this page follows them. The AU brochure’s weight row still carries an 883 kg value from the 17-module table; 837 kg is the 16-module figure. The control box and modules are rated 120 A maximum, while the system table prints a 125 A two-minute peak. Confirm the configuration and the warranty terms with Suncloud before quoting.
Plan & design
Before anything is ordered — sizing, pairing and design decisions for the BOS-G Pro High-Voltage Battery · 25.6–81.92 kWh.
Pairs with
Install & commission
On the wall, wired, energised and registered — in the order the job actually runs.
Operate & configure
Monitoring, tariffs, work modes — getting the most out of the system after handover.
Documents
Everything published for the BOS-G Pro High-Voltage Battery · 25.6–81.92 kWh — and where something is missing, it says so instead of hiding the row.
System & shared documents
Not specific to the BOS-G Pro High-Voltage Battery · 25.6–81.92 kWh — these apply across the range and live here once, not copied per model.
