ONESUN SSIO Series: Redefining the New Standard for Outdoor Independent Power Supply with Industrial-Grade "Anchoring Technology"
In the era of accelerating global energy structure transformation, scenarios such as outdoor construction, emergency power supply, and energy guarantee in remote areas have put forward higher requirements for high-reliability, strong drive, and impact-resistant independent power supply systems. Leveraging over a decade of experience in the photovoltaic energy storage industry, ONESUN Technology (Shenzhen) Ltd. has launched the new SSIO series of independent solar power stations - 5kW 51.2V200Ah and 10kW 51.2V400Ah, with industrial-grade "anchoring technology" at its core, bringing unprecedented stability and durability to high-load applications outdoors.

The SSIO series adopts a mains-frequency isolated transformer architecture, which boasts excellent surge resistance, can easily withstand grid fluctuations, instantaneous impact currents, and heavy load starting currents, making it particularly suitable for high-impact scenarios such as road construction, logging, water pump drive, construction, and mining operations. Its powerful inductive load drive capability ensures that motors, air compressors, and pump equipment maintain stable voltage during startup, eliminating common voltage drops and shutdowns.

The built-in isolated transformer completely eliminates DC components, suppresses common-mode noise, and naturally filters out grid interference, making the output power cleaner and safer, while ensuring perfect compatibility with generators. Whether in high-temperature, frequency fluctuation, or electromagnetic interference environments, the SSIO series can maintain stable operation, truly achieving "born for the outdoors".
🌿 IRON BULL SERIESHybrid Energy Storage System
ONESUN® — Advanced LiFePO₄ Solar Storage | High efficiency · Reliable power · Green intelligence
| Parameter | SSIO-5kW / 51.2V 200Ah (10.24kWh) | SSIO-10kW / 51.2V 400Ah (20.48kWh) |
|---|---|---|
| 🔹 Model Overview | ||
| Product Series | Iron Bull SSIO-5kW | Iron Bull SSIO-10kW |
| System Configuration | 5kW inverter / 51.2V 200Ah LiFePO₄ | 10kW inverter / 51.2V 400Ah LiFePO₄ |
| ⚡ AC Input Data | ||
| AC Input Voltage | 220VAC | 220VAC |
| AC Input Voltage Range | 154-264±3VAC (Normal) / 185-264±3VAC (UPS) | 154-264±3VAC (Normal) / 185-264±3VAC (UPS) |
| Max AC Charging Current | 63A | 104A |
| Input Frequency | 50/60Hz ±5% | 50/60Hz ±5% |
| ☀️ PV Parameters | ||
| PV Max Power | 6400W | 6400W |
| PV Working Method | MPPT (Maximum Power Point Tracking) | MPPT |
| PV Input Voltage Range | 60-150V | 60-150V |
| PV Max Open Voltage (Voc) | 150V | 150V |
| PV Max Input Current | 120A | 120A |
| 🔋 Battery Data (LiFePO₄) | ||
| Battery Type | Lithium Iron Phosphate (LiFePO₄) | Lithium Iron Phosphate (LiFePO₄) |
| Battery Voltage | 51.2V DC | 51.2V DC |
| Battery Capacity | 200Ah | 400Ah |
| Battery Energy (Usable) | 10.24 kWh | 20.48 kWh |
| Continued Discharge Current | 200A | 400A |
| Max Discharge Current (Peak) | 300A | 600A |
| 🔌 AC Output Data | ||
| Rated Output Power (VA / W) | 6000VA / 5000W | 12000VA / 10000W |
| Output Voltage | 220VAC ±10% | 220VAC ±10% |
| Output Frequency | 50Hz / 60Hz ±1% | 50Hz / 60Hz ±1% |
| Output Waveform | Pure Sine Wave | Pure Sine Wave |
| Transfer Time (UPS / INV) | ≤10ms (UPS mode) / ≤20ms (INV mode) | ≤10ms (UPS mode) / ≤20ms (INV mode) |
| Overload Capacity | ≤1.3 × Rated Power for 30 seconds | ≤3 × Rated Power for 10 milliseconds |
| Impact Resistance | — (N/A) | — (N/A) |
| 🛡️ Protection & Safety Functions | ||
| Protection Features | Input over/under voltage protection, battery overcharge protection, battery over-discharge protection, battery over-temperature protection, overload protection, short circuit protection, output over/under voltage protection. | |
| 📟 General Specifications & Interfaces | ||
| Display | LED Indicators (System status & alarms) | LED Indicators (System status & alarms) |
| PayGo Support | Optional Ready for PayGo | Optional Ready for PayGo |
| Communication Ports | RS232 / RS485 / Bluetooth (BT) | RS232 / RS485 / Bluetooth (BT) |
| Cooling Method | Forced Air Cooling (Intelligent fan control) | Forced Air Cooling |
| Operating Temperature | Charging: 0°C ~ 50°C | Discharging: -15°C ~ 60°C | Charging: 0°C ~ 50°C | Discharging: -15°C ~ 60°C |
| IP Protection Rating | IP54 (Dust & splash resistant) | IP54 |
| Storage Temperature | -15°C ~ 45°C | -15°C ~ 45°C |
| Relative Humidity | 5% ~ 90% RH (Non-condensing) | 5% ~ 90% RH (Non-condensing) |
| Certifications & Standards | EN-IEC60335-1, EN-IEC60335-2-29, IEC 62109-1, EN-IEC62133 | |
| Warranty & Quality | Industrial grade / 5-year standard warranty* | Industrial grade / 5-year standard warranty* |

Rich Product Matrix: Full-Scenario Coverage from Base Station Energy Storage to Integrated Systems
In addition to the SSIO series, ONESUN has built a multi-dimensional product system that covers global market demands:
Communication base station battery systems: Using A-grade lithium iron phosphate batteries and self-developed BMS, supporting long-term stable operation in high-temperature areas and weak grid areas, widely used in operator projects in Africa, the Middle East, and Southeast Asia.
All- Integrated solar energy systems (All-in-One ESS): Integrating inverters, batteries, EMS, and solar controllers, suitable for family, commercial, and small industrial scenarios, easy to install and maintain.
PAYGO series products: Designed specifically for off-grid markets in developing countries, supporting mobile payment, remote lock control, and installment billing modes, helping partners quickly expand rural energy markets.
Residential and commercial BESS systems: From 5kWh to hundreds of kWh of modular energy storage solutions, meeting the needs of multiple scenarios such as families, shops, factories, and microgrids.

Why Choose ONESUN? The Best Partner for Globally Renowned Battery Brands in the B-End Market
As a global leading photovoltaic energy storage and LiFePO4 battery manufacturer, ONESUN has been exporting products to over 70 countries since its establishment in 2014, withHere is the rest of the translation:
with a cumulative delivery of over 3GW of projects. ONESUN's long-term partnership with global B-end customers stems from the following core advantages:
Full-chain OEM/ODM manufacturing capabilities
ONESUN has complete battery PACK, BMS research and development, inverter integration, and system design capabilities, providing:
Customized batteries (capacity, voltage, appearance, protocol)
System-level ODM (battery + inverter + EMS)
SKD/CKD localized assembly solutions
Suitable for the "China supply + overseas assembly + local brand" cooperation model.
A-grade battery cells + self-developed BMS, ensuring ultimate safety and lifespan
All products use A-grade lithium iron phosphate battery cells from leading Chinese battery manufacturers and are equipped with ONESUN's self-developed BMS, achieving:
Precise balancing
Multiple protections
High-temperature adaptation
Ultra-long cycle life
Ensuring stable operation even in high-temperature, high-humidity, and frequent charge-discharge environments.
Full-process quality control system
From battery cell screening, PACK manufacturing, and aging testing to finished product shipment, ONESUN executes strict quality standards, ensuring that every device can operate stably in different climates worldwide.
Globalized service and localized support
ONESUN has established a partner network in Africa, the Middle East, and Southeast Asia, providing technical training, after-sales support, and localized spare parts services, helping customers quickly implement projects.

Conclusion: ONESUN Drives Global Energy Transition with Industrial-Grade Reliability
Whether it's the outdoor independent power supply capability of the SSIO series or communication base station batteries, integrated solar energy systems, PAYGO products, and industrial and commercial energy storage solutions, ONESUN is committed to providing high-value, sustainable energy solutions for global partners with technological innovation and reliable quality at its core.
Article Source: Lithium battery manufacturer - ONESUN China
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