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DEYE BOS-G40 ESS Specifications
| Cell Chemistry | LiFePO₄ |
| Total / Usable Energy | 40.96 kWh / 36.86 kWh |
| Nominal System Voltage | 409.6 V DC |
| Operating Voltage Range | 332.8 – 467.2 V DC |
| Module Specs (× 8) | 5.12 kWh • 51.2 V • 100 Ah |
| Charge / Discharge Current | 50 A recommended • 100 A nominal • 125 A peak (2 min @ 25 °C) |
| Cycle Life | ≥ 6 000 (90 % DoD, 25 °C, 0.5 C) |
| Operating Temp | Charge 0 – 55 °C • Discharge –20 – 55 °C |
| Ingress Rating | IP20 (indoor rack) |
| Dimensions (W×D×H) | 530 × 602 × 2 187 mm |
| Weight (approx.) | ≈ 1036.17 lbs |
| Certifications | UL 1973 • UL 9540A • CE • IEC 62619 • VDE 2510-50 • UN 38.3 |
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DEYE C&I BOS-G40 40kWh IP20 Indoor HV Battery Rack
SKU DEYE-BOS-G40-HV-INDOOR
DEYE BOS-G40 Small-Scale C&I ESS
The BOS-G40 is an 8-module LiFePO₄ battery rack that supplies 40.96 kWh at a nominal 409.6 V DC. Its 333 – 468 V operating range is inside the DC window of Sol-Ark 30 kW (208 V) and Sol-Ark 60 kW (480 V) three-phase hybrids, so the rack lands on those inverters without external transformation.
A dedicated HV control box (100 A) handles isolation and pre-charge; CAN 2.0 / RS-485 deliver cell-level telemetry to site EMS platforms.
DEYE BOS-G40 Energy Storage System Features
- Certified LiFePO₄ safety: UL 9540A-tested pack with multi-level BMS protection.
- 8-drawer 19″ rack: compact footprint; front service—no rear clearance needed.
- 409 V nominal bus: matches Sol-Ark 30 k/60 k DC input for direct coupling.
- HV box & comms: 100 A breaker, pre-charge, CAN 2.0 / RS-485 diagnostics.
- −20 °C to 55 °C operation: maintains output across warehouse and telecom-hut climates.
DEYE BOS-G Series Warranty & Lifecycle
The DEYE Bos-G Series comes with a 10-year warranty and is rated for ≥ 6 000 cycles at 90 % DoD (25 °C), delivering a decade of day-in/day-out service without capacity anxiety. LiFePO4 chemistry and a –20 °C – 55 °C operating window keep performance steady in server rooms, warehouses, or desert enclosures alike.
Deye BOS-G40 Energy Storage System Review
The BOS-G40 supplies just over 36 kWh of usable energy—enough to trim utility peaks, back up critical circuits, or support a small bank of EV chargers without taking up much floor space. Its eight LiFePO₄ modules come in a single 19-inch rack, so installation is straightforward and fast. Built-in monitoring keeps every cell balanced and reports temperature, voltage, and current in real time, while the sealed steel enclosure protects the battery from dust and everyday knocks. Backed by a 10-year warranty and a 6,000-cycle life rating, the BOS-G40 offers dependable, long-term storage for commercial facilities that need a practical mid-size battery solution.
DEYE BOS-G40 Assembly Guide
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