Freen-BSH Energy Storage

The Freen-BSH is a high-voltage sodium-ion battery energy storage system engineered for residential, agricultural, and commercial installations that require higher system voltage, strong performance, and long operational life. Built using advanced Na-ion (sodium-ion) chemistry, it offers excellent thermal stability, long cycle life, and high energy efficiency – without lithium.

Designed as a 288 V modular floor-mounted system, Freen-BSH integrates easily with modern high-voltage inverters and energy management systems, making it ideal for solar, wind, and hybrid renewable installations where dependable storage and system scalability are essential.

Key Benefits

Safe Sodium-Ion Technology
Uses sodium-ion layered oxide cells known for improved thermal stability and a lower risk of thermal runaway compared to conventional lithium batteries. Engineered for stable indoor stationary operation.

Outstanding Energy Efficiency
Round-trip efficiency exceeds 97 %, helping maximize the usable energy stored from solar and wind generation.

Extended Service Life
Designed for over 10,000 full charge–discharge cycles with end-of-life capacity above 60 %, supporting long-term system value and reduced maintenance frequency.

Wide Operating Temperature Range
Capable of operating in demanding climates with discharge temperatures from −30 °C to +60 °C, ensuring reliability in both cold and hot environments.

Scalable Modular Design
Each unit provides 10 kWh of usable energy, and up to 4 modules can be connected in parallel, allowing systems up to 40 kWh while maintaining a high-voltage architecture.

Technical Highlights

• Nominal Voltage: 288 V

• Operating Voltage Range: 144 – 379.2 V

• Usable Energy (per unit): 10 kWh

• Rated Capacity: 35 Ah

• Max Charge / Discharge Current: 17.5 A

• Max Charge / Discharge Power: 5 kW

• Dimensions (W×D×H): 680 × 360 × 418 mm

• Weight: 120 kg

• Installation: Indoor, floor-standing

• Cooling: Natural convection

• Communication: CAN & RS485

• Ingress Protection: IP20

Engineered Safety & Battery Management

Freen-BSH includes a built-in Battery Management System designed specifically for sodium-ion chemistry. It continuously monitors system conditions and provides:

• Cell and pack voltage monitoring

• Current and temperature supervision

• Over-charge, over-discharge, and over-current protection

• Short-circuit and over-temperature protection

• Active balancing for improved lifetime

• Communication with compatible inverters and EMS platforms

The system is structurally reinforced to resist mechanical stress and is engineered to reduce internal short-circuit risks and moisture ingress, helping prevent overheating and ignition scenarios.

Ideal For

✔ High-voltage residential solar systems
✔ Farms and agricultural energy storage
✔ Commercial self-consumption and peak shaving
✔ Hybrid solar + wind installations
✔ Backup and resilience power systems

Warranty

Freen-BSH is covered under Freen’s long-term limited product warranty, providing dependable manufacturer support and guaranteed long-term performance for stationary energy storage systems.