ONESUN ECO W Series: Wall-Mounted Lithium Iron Battery – Powerful, Safe, and Scalable Energy Storage for Modern Demands

 

In today's rapidly evolving energy landscape, reliable and efficient storage solutions are no longer a luxury-they are a necessity. Introducing the ONESUN ECO W Series, a cutting-edge wall-mounted low-voltage lithium iron phosphate (LFP) battery system, available in W-25.6V150Ah/200Ah and W-51.2V150Ah/200Ah models. Designed for both residential and light commercial applications, this series redefines what you can expect from decentralized energy storage.

 

 

 

Engineered for High Performance

The ECO W Series leverages premium LFP battery cells combined with an intelligent smart Battery Management System (BMS). In specific application scenarios, it supports continuous 1C charge and discharge, delivering robust power on demand without derating. Whether you are shaving peak loads, backing up critical equipment, or maximizing self-consumption from solar PV, the W-series ensures your energy is ready when you need it most.

 

Seamless Compatibility

Worried about integration with your existing inverter? The ECO W Series is designed to be universally compatible with most single-phase inverters on the market. This plug-and-play compatibility minimizes installation headaches and makes upgrading your current system effortless.

 

Triple-Layer Safety Armor – Peace of Mind Included

Safety is non-negotiable. That's why we built a three-level adjustable protection mechanism: Warning, Protection, and Deep Protection. This comprehensive safety architecture continuously monitors voltage, current, and temperature, intervening at the earliest sign of abnormality. From overcharge to short-circuit risks, the Triple-Layer Safety Armor keeps your home, clinic, or retail space secure.

 

Dual Balancing Technology – Longer Life, Higher Retention

Battery degradation is a thing of the past with our proprietary Dual Balancing Technology, which actively combines active and passive balancing. This intelligent approach delays cell aging, maintains capacity consistency, and ensures long-term stability. The result? More usable cycles and a lower total cost of ownership over the system's lifetime.

 

Scalable for Tomorrow's Needs

Energy demands change. The ECO W Series supports parallel expansion, allowing you to start small and scale up as your needs grow. Add more units to increase total capacity without replacing existing hardware-ideal for households, schools, hospitals, retail stores, and small-to-medium commercial and industrial businesses.

 

⚡ ONESUN · Wall Mounted Lithium Iron Battery

🔋 LiFePO4 Technology 🏭 Premium Energy Storage 🌿 Green & Reliable

🔧 Technical Data Sheet - High Performance Series for Residential & Commercial

 

Model	W-25.6V150Ah	W-25.6V200Ah	W-51.2V150Ah	W-51.2V200Ah
Cell Type	LiFePO₄ (Lithium Iron Phosphate)
Nominal Capacity	150Ah	200Ah	150Ah	200Ah
Energy	3.84 kWh	5.12 kWh	7.68 kWh	10.24 kWh
Nominal Voltage	25.6V		51.2V
End-of-charge Voltage	29.2V		58.0V
End-of-discharge Voltage	20.2V		42.0V
Max. Charge Current	100A
Max. Continuous Discharge Current	100A
Max. Instantaneous Discharge Current	100A
Overcurrent Protection	120A	120A	120A	220A
Ingress Protection	IP50
Warranty	3 years
Cycle Life	≥3500 cycles @ SOH ≥80% & 0.5C, 25°C
Balancing	Active & passive balancing
SOC Estimation	Yes (high accuracy)
Intelligent Balance	Yes
Master-Slave Operation	Yes (parallel expansion ready)
Sleep & Wake-up	Auto / Manual wake-up supported
Protection Function	Over-charge, Over-discharge, Over-current, Short-circuit, Over-voltage, Under-voltage, Over-high/low temperature
Communication Interface	RS485 / CAN / RS232 / Bluetooth (Optional)
Communication Protocol	Compatible with 12+ leading inverter brands worldwide
Operating Temperature	Charging: 0°C ~ 55°C ; Discharging: -20°C ~ 55°C
Storage Temperature	-30°C ~ 60°C
Storage Humidity	≤90% RH (non-condensing)
Standard Environmental Condition	Temperature: 25°C ± 2°C ; Humidity: 45% ~ 75% RH ; Atmospheric Pressure: 86kPa ~ 106kPa
Dimensions (W*H*D)	392*365*155 mm	567*393*154 mm	567*393*154 mm	870*465*145 mm
Net Weight	Approx. 25 kg	Approx. 40 kg	Approx. 40 kg	Approx. 82 kg
Gross Weight	Approx. 28.5 kg	Approx. 43.5 kg	Approx. 43.5 kg	Approx. 99 kg
Certification	CE, UN38.3, MSDS, RoHS compliant

 

 

📋 ONESUN® Professional Energy Storage | Built-in intelligent BMS with active & passive balancing, master-slave parallel support, and multi-protocol communication (RS485/CAN).

✔️ Data based on standard test conditions (25±2°C). Specifications subject to continuous improvement. 🔋 Cycle life guarantee: ≥3500 cycles @ 80% DoD, 0.5C rate - reliable backup & daily cycling.

 

 

 

Technical Highlights at a Glance

Models: W-25.6V150Ah / 200Ah; W-51.2V150Ah / 200Ah

Chemistry: Lithium Iron Phosphate (LFP)

Continuous Rate: 1C charge/discharge (scenario-dependent)

Protection Levels: 3-tier adjustable (Warning, Protection, Deep Protection)

Balancing: Active + Passive (Dual Balancing)

Installation: Wall-mounted, space-saving design

Scalability: Parallel-ready for flexible capacity expansion

 

Why Choose ONESUN ECO W Series?

From a family looking to reduce electricity bills, to a hospital requiring backup power for life-sustaining equipment, to a retail chain optimizing energy costs-the ECO W Series delivers power, safety, and adaptability in one sleek package. Backed by rigorous testing and a smart BMS that communicates seamlessly with leading inverters, this is the storage solution you can trust for decades.

 

Power your future with ONESUN. Choose the ECO W Series – where safety meets scalability.

 

 

Article Source: Lithium battery manufacturer - ONESUN China

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