MINVON SOL IA-S4 Series 3.5KW 5KW Off-Grid Pure Sine Wave Solar Inverter 48V DC to 230V AC Built-In MPPT, Support Parallel Connection & Operate With or Without Battery

1. PV & Grid Hybrid Complementary Power Supply Adopts solar and grid dual complementary power supply mode. When solar power generation is insufficient to support loads, the system automatically switches on grid auxiliary power, delivering continuous, stable and uninterrupted household power to avoid daily power outage issues.

2. Customizable Battery Charge & Discharge Timing Strategy Supports personalized programming of charge and discharge time periods. Users can leverage off-peak grid tariffs for timed charging and discharging, substantially cutting long-term household electricity costs and achieving intelligent energy savings.

3. Scalable Parallel Connection (Max 9 Units, 45kW Total Output) Allows up to 9 inverters to be connected in parallel for a maximum 45kW system output. The flexible expandable design fully satisfies high-power power consumption demands for large villas and multi-family residential scenarios with outstanding applicability.

4. 500VDC PV Open Circuit Voltage & Wide 120–450V MPPT Range Features 500VDC maximum PV open circuit voltage and a 120–450V wide MPPT operating window. It fits most mainstream high-wattage solar panels, enables flexible rooftop PV layout, and maximizes solar energy collection and overall power generation efficiency.

5. Dual Switchable Input Priority Modes Comes with two optional operating logics – Solar Priority and Grid Priority. The switchable modes adapt to diverse household power consumption habits and energy allocation needs, realizing customized and intelligent power scheduling.

6. Battery/Battery-Free Dual Operating Modes With exclusive optimized circuit structure, the inverter supports stable operation with or without batteries. It enables battery-free PV system deployment, greatly lowering the upfront investment and installation cost of solar power systems.

7. Built-In High-Speed AC Charger, Universal for 48V Batteries Integrated high-efficiency AC fast charger works perfectly with 48V LiFePO4 lithium batteries and lead-acid batteries. It supports rapid grid power charging with stable performance and wide battery compatibility.

8. Pure Sine Wave Output & Auto 50/60Hz Frequency Detection High-purity sine wave output protects delicate and precision household electrical devices from voltage damage. Built-in automatic 50/60Hz frequency recognition matches global grid standards, enabling worldwide universal installation and application。

Q1: Can I get some samples for test?

A: Yes, sample order is available for quality check and market test .

Q2: Do you accept OEM/ODM ?

A:Yes, we accept OEM/ODM with your authorization.

Q3: What is your typical delivery timeline?

A: For standard off-the-shelf products, we offer a delivery window of 5-10 business days from order confirmation. For bulk orders or customized OEM/ODM projects, delivery schedules are determined based on production capacity and customization requirements. Our sales team will provide a detailed timeline after evaluating your specific needs.

Q4: What is the standard of package?

A: We have our own design carton with five layers corrugated material; if you have any other special requirement of package, we also support customized service.

Q5: What’s your payment terms?

A: We accept T/T, L/C, WEST UNION, ALI TRADE ASSURANCE, cash.

Q6: What’s your warranty time?

A: We offer 12 months warranty service, life time technique support.

Q7: How does your factory implement quality control?

A: Quality is the cornerstone of our brand. We operate a dedicated quality assurance department that oversees every stage of production, from component sourcing to final delivery. Each product undergoes a minimum of seven rigorous quality inspection protocols before shipment, ensuring compliance with international standards and customer specifications.

Q8: How can I trust your company?

A: With over 20 years of specialized experience in inverter manufacturing, Minvon has established a robust quality management system certified to ISO 9001, ISO 14001, and ISO 45001 standards. Our products also hold CE, CCC, and RoHS certifications, ensuring compliance with international regulatory requirements. We can provide third-party assessment reports and factory audit documentation upon request to demonstrate our commitment to transparency and reliability.