Battery Deye BOS-B256 Pro-A3 (LiFePO4 819.2V 314Ah 257.2 kWh)
Battery System Deye BOS-B256 Pro-A3
Industrial High-Voltage LiFePO4 System 819.2V 314Ah 257.2 kWh for Large-Scale ESS
Deye BOS-B256 Pro-A3 is a professional high-voltage battery system with large capacity, designed for modern ESS (Energy Storage System) solutions in commercial and industrial applications. The system ensures stable energy storage and efficient power delivery under heavy loads and continuous operation.
The system is built on safe LiFePO4 technology and features technical parameters of 819.2 V, 314 Ah, 257.2 kWh, making it an optimal solution for large energy complexes, manufacturing enterprises, and infrastructure facilities.
Deye — International Expert in Energy Storage
Reliability, Advanced Technology, and Full Inverter Integration
Deye is a global manufacturer of solar energy and storage equipment. The brand’s battery solutions are designed for full compatibility with hybrid and grid-tied inverters, ensuring precise charge control, cell balancing, and stable operation of the entire power system.

LiFePO4 — Maximum Safety and Long Service Life
Extended Lifecycle and Thermal Stability
LiFePO4 battery cells are characterized by high thermal stability, resistance to deep discharge, and minimal degradation over time. This technology ensures safe operation even under intensive loads and daily cycling.
Deye BOS-B256 Pro-A3 is designed for long-term operation within powerful solar power plants and industrial backup systems, where reliability and predictable performance are critical.
819.2 V / 314 Ah — Next-Level Industrial Energy Capacity
257.2 kWh for Large Facilities and Energy Clusters
The nominal voltage of 819.2 V meets high-voltage ESS standards. A capacity of 314 Ah and total energy storage of 257.2 kWh allow efficient accumulation of surplus generation and ensure long-duration backup power.
The system is ideal for manufacturing enterprises, the agricultural sector, logistics centers, commercial complexes, and critical infrastructure facilities with high energy consumption.
Key Advantages of Deye BOS-B256 Pro-A3
- LiFePO4 technology — enhanced safety and long lifespan.
- 257.2 kWh — substantial energy reserve for large systems.
- 819.2 V / 314 Ah — industrial high-voltage ESS standard.
- Intelligent BMS — multi-level protection and module control.
- Scalability — integration into large energy complexes.
- Consumption optimization — reduction of peak loads and electricity costs.
Solution for Industrial and Commercial Solar Power Plants
Stable Backup and Energy Independence
Deye BOS-B256 Pro-A3 operates efficiently within large hybrid and off-grid solar power systems. The system allows storing excess energy, reducing grid dependency, and ensuring uninterrupted facility operation during power outages.
ESS Solutions from Lirik Solar
Professional Design and Commissioning of Energy Storage Systems
Lirik Solar provides selection, supply, and implementation of industrial ESS systems based on Deye battery solutions. We develop customized solutions for businesses, production facilities, and energy infrastructure projects, taking into account real load profiles and backup requirements.
Power That Ensures Energy Stability
Invest in a Professional Energy Storage System
By choosing Deye BOS-B256 Pro-A3 257.2 kWh, you receive a scalable, safe, and durable solution for large-scale energy projects.
Order battery systems from Lirik Solar today — our engineers will help you design the optimal configuration and ensure professional commissioning of your ESS.
Documents for Deye BOS-B256 Pro-A3
Datasheet and Manual
Deye BOS-B256 Pro-A3 Manual
Deye BOS-B256 Pro-A3 Datasheet
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10 years