BOS-B Pro-A3 Battery for C&I Energy Storage

  • Modular rack‑mounted C&I energy storage, scalable from 100 kW to 2.5 MW
  • 241.15 kWh nominal / 217.04 kWh usable per cluster (recommended 90% DoD)
  • Fast seamless switching (STS) — ≤20 ms between grid, off‑grid and diesel
  • High conversion efficiency: PCS ≈ 98.5%, MPPT > 99%
  • Battery module: 16.08 kWh51.2 V314 Ah (modules 5–15 in series)
  • PV-ready: wide MPPT range (≈180–750 V), up to 8 MPPTs200 kWp PV input
  • Robust BMS with smart balancing; long life (EOL70% ≥ 6000 cycles) and 10‑year warranty
  • Rack dimensions 2150 × 1136 × 800 mm, system weight ≈ 1850 kg, IP‑rated protections
SKU: BOS-B Pro-A3Category:Small-Scale C&I ESS
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Description

The BOS-B Pro-A3 Battery from Deye is a next-generation lithium-ion energy storage solution engineered for demanding commercial and industrial (C&I) applications. Building on a legacy of high performance, this system delivers superior efficiency and intelligent control, providing businesses with a future-proof platform for maximum energy independence and operational efficiency.

Parameter Value/Description
Battery Module Energy (kWh) 16.08
Battery Module Nominal Voltage (V) 51.2
Battery Module Capacity (Ah) 314
Module Weight Approximate (kg) 123
Battery Module Qty In Series (Optional) 15
Scalability 5 ~ 15
System Nominal Voltage (V) 768
System Energy (kWh) 241.15
System Usable Energy (kWh) 217.04
Charge/Discharge Current (A) – Recommend 157
Charge/Discharge Current (A) – Max 180
Operating Temperature (°C) Charge: 0 – 55; Discharge: -20 – 55
Storage Temperature (°C) 0 – 35
Thermal Management Smart fan cooling
LCD Display SOC / Fault Code
Status Indicator Yellow: Battery High Voltage Power On; Red: Battery System Alarm
Communication Port TCP / RS485 / CAN
Communication With BMS CAN
Humidity 5% – 85%
Altitude ≤3000m
IP Rating of Enclosure IP20
Noise (dB) TBD
System Dimension (W × H × D, mm) 2150 × 1136 × 800
System Weight Approximate (kg) 1850
Installation Location Rack Mounted
Recommend Depth of Discharge 90%
Cycle Life 25±2°C, 0.5C / 0.5C, EOL70%≥6000
Warranty Period 10 years
Certification CE / IEC62619 / IEC62040 / UN38.3

Key benefits

  • Ultra-High Capacity : The BOS-B Pro-A3 battery delivers a substantial 241.15kWh per cluster, supporting up to 16 racks per PCS for extended energy autonomy.
  • Smart Balancing: An independent BMS ensures optimal charge distribution across cells, significantly extending the overall battery life.
  • High Performance and ScalabilityPCS offers 125kW power, easily expandable up to 2.5MW to meet growing energy demands.
  • Intelligent Control: Smart peak-valley management with anti-backflow and overload protection.
  • Easy Maintenance: Designed for convenience with a 5U standard chassis for streamlined servicing and hassle-free USB/Cloud firmware upgrades.
  • Ultimate Safety: Utilizes inherently stable LFP battery chemistry and is designed to support aerosol fire extinguishing systems for maximum protection and peace of mind.

Download

Deye BOS-B-Pro-A3 Datasheet

Deye ESS User Manual BOS-B Pro-A3 EU(EN) V02

Certificate

Statement

DEYE Statement on Battery Expansion and Insulation Fault

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