All in One Solar Inverter with Lithium Battery –Why choose ONESUN？OEM & ODM Solar Storage System-OneSun

In the global energy transition, solar energy storage systems are revolutionizing energy use in homes, businesses, and industries at an unprecedented pace. Among numerous manufacturers, ONESUN stands out as a world-renowned manufacturer of batteries and energy storage systems, providing global users with high-quality new energy solutions, including the All-in-One Solar Inverter system.

I. What is an All-in-One Solar Inverter?

An "All-in-One Solar Inverter" is an integrated solar inverter system that unifies the solar inverter, MPPT solar charge controller, lithium battery energy storage unit, and intelligent power management system into a compact chassis. This achieves integrated and coordinated operation of power generation, energy storage, DC-to-AC conversion, and battery management. Traditional solar systems often require separate purchases of multiple components such as batteries, inverters, and controllers, resulting in complex installation, long commissioning times, and numerous potential points of failure. The All-in-One solution significantly simplifies the system structure, making installation and maintenance more convenient, and improving system stability and user experience.

All in one Solar Inverter

ONESUN's All-in-One Solar series supports multiple operating modes, including grid-connected, off-grid, hybrid energy storage, and emergency power supply. It can automatically switch modes according to the scenario, flexibly responding to changes in energy demand, whether in residential rooftops, commercial buildings, or remote off-grid areas.

II. ONESUN: A Global Energy Storage and Customized Solution Provider

Founded in 2014, ONESUN is an integrated energy storage company specializing in the R&D, production, and sales of photovoltaic energy storage products. It has multiple production lines covering lithium batteries, inverters, BMS (Battery Management System), and PCBA production units. Adhering to the philosophy of "quality and safety as lifeline," the company independently controls the core manufacturing capabilities of batteries and inverters, thereby providing complete photovoltaic energy storage solutions.

Parameter Category	Parameter Name	Typical Value / Range
System Configuration
System Type	Hybrid Solar Inverter Type	All-in-One with Integrated Lithium Battery
System Type	System Topology	Grid-tied with backup / Off-grid capable
Solar Input (PV)
PV Input Specifications	Max PV Input Power	3 kW - 10 kW (model dependent)
	Max PV Input Voltage	450 V - 600 V DC
	PV Start-up Voltage	120 V - 150 V DC
	MPPT Voltage Range	125 V - 425 V DC
Battery Specifications
Lithium Battery	Battery Type	LiFePO4 (Lithium Iron Phosphate)
	Nominal Voltage	48 V DC
	Usable Capacity	5 kWh - 20 kWh (expandable)
	Cycle Life	≥ 6000 cycles @ 80% DoD
	Operating Temperature	Charge: 0°C to 55°C; Discharge: -20°C to 55°C
Inverter Output
AC Output	Rated Output Power	3 kW - 10 kW (model dependent)
	Peak Power	150% of rated power for 3 seconds
	Output Voltage & Frequency	120V/240V Split Phase or 230V Single Phase, 50/60 Hz
	Output Waveform	Pure Sine Wave
Grid Connection
Grid Specifications	Grid Voltage Range	90 V - 280 V AC (adjustable)
	Grid Frequency Range	47 Hz - 63 Hz (adjustable)
	Grid Connection Type	Single-phase or Three-phase
Efficiency & Protection
Performance	Max Efficiency	≥ 97.5%
	European Efficiency	≥ 96.5%
	Protection Features	Overload, Short Circuit, Over Temperature, Islanding
	Cooling Method	Fan Cooling with Temperature Control
Physical & Environmental
Physical Specifications	Operating Temperature	-25°C to 60°C (with derating above 45°C)
	Storage Temperature	-40°C to 70°C
	Humidity	5% - 95% RH (non-condensing)
Communication & Monitoring
Connectivity	Monitoring System	Wi-Fi / Ethernet / GPRS / Bluetooth
	Mobile App	Available (iOS & Android)
	Data Logging	Built-in with cloud access

ONESUN's products have been exported to more than 70 countries and regions worldwide, covering various application scenarios such as residential, commercial, industrial, and communication base stations. Its global footprint not only signifies that product quality meets international standards but also demonstrates the company's strong capabilities in overseas market channels and service support.

A small rural off-grid all-in-one unit integrating the PAYGO system, helping local operators achieve an energy-inclusive "use first, pay later" model.

III. Core Competitive Advantages of a World-Renowned Battery Brand Manufacturer

As an industry leader, ONESUN possesses several significant advantages in technology and manufacturing:

* Own Lithium Battery and Inverter Factories: From battery cells to complete systems, ONESUN has a complete in-house manufacturing and quality control system, enabling it to control product stability and safety from the source.

* High-Safety LiFePO₄ Batteries: All energy storage systems utilize LiFePO₄ (lithium iron phosphate) batteries, known for their high thermal stability and safety performance. Combined with an intelligent BMS, this effectively avoids overcharging, over-discharging, and short-circuit risks, significantly extending battery life.

* Intelligent System Integration: The company's R&D team comprises top-tier BMS system engineers from both domestic and international backgrounds, enabling seamless communication between batteries and inverters, providing users with an efficient and stable energy management experience.

* Flexible Expansion and Compatibility: ONESUN series systems support modular expansion, allowing for scaling from basic energy storage capacity to larger scales based on customer needs, meeting diverse requirements from small residential to medium-to-large commercial energy storage.

IV. Advantages of Global OEM and ODM Customization Services

Beyond meeting standard product requirements, ONESUN offers world-class OEM (Original Equipment Manufacturer) and ODM (Original Design Manufacturer) services, truly tailoring energy storage systems to meet specific customer application scenarios. Whether it's different voltage levels, appearance designs, battery capacities, or complex industry applications, ONESUN provides a one-stop service process from battery pack design, battery management software, complete assembly to final testing.

This customization capability not only enhances product added value but also significantly strengthens customers' competitiveness in target markets. Especially in niche markets such as communication backup power, industrial container energy storage, and mobile energy stations, ONESUN's customization services can shorten product development cycles and help customers respond quickly to market changes.

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V. Conclusion: The Best Partner for Embracing the Clean Energy Era

With the continued global push for green energy and sustainable development, solar energy storage systems will become an important component of the future energy system. As a world-renowned manufacturer of energy storage and batteries, ONESUN provides reliable solutions for a wide range of users through its comprehensive product line, global service network, intelligent integrated technology, and robust OEM/ODM customization capabilities.

For individuals and businesses looking to reduce electricity costs, enhance energy independence, or ensure stable power supply in complex electrical environments, choosing ONESUN's All-in-One Solar Inverter and integrated energy storage solutions signifies entering a new era of safer, more efficient, and more environmentally friendly energy.

Article Source: Lithium battery manufacturer - ONESUN China

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