MINVON SOL IA-S4 Series 3.5KW 5KW Off Grid Solar Inverter, 500V MPPT Parallel Energy Storage Inverter Without Battery For Home Solar System

1. PV & Grid Joint Power Supply

When solar generation is insufficient, solar energy and municipal grid will supply household loads simultaneously to guarantee stable power consumption.

2. Customizable Charge & Discharge Timing Schedule

Users can freely set battery charging and discharging time to match off-peak electricity price for cost saving.

3. Max 9 Units Parallel, Total 45kW Expandable Capacity

Support parallel connection of up to 9 inverters, expand total system power to 45kW, meet power demand of large villas and multi-family houses.

4. 500VDC High PV Input Voltage, Wide MPPT Range 120–450V DC

Compatible with most mainstream high-power solar panels, flexible layout for rooftop PV arrays, improve solar energy utilization efficiency.

5. Configurable Power Input Priority Mode

Two optional working priorities: Solar First / Grid First, satisfy different household energy usage habits.

6. Dual Working Mode: With Or Without Battery

Special circuit design enables the inverter to run normally without energy storage battery, greatly reduce initial system investment cost.

7. 48V Battery Compatible & Built-in AC Charger

Match lithium iron phosphate and lead-acid batteries, built-in high-efficiency AC charger for fast battery replenishment from grid.

8. Pure Sine Wave Output & Auto Frequency Adaptation

Stable pure sine wave AC output protects sensitive home appliances, auto identify 50Hz/60Hz grid frequency for global market adaptation.

Application Scenarios

1. Off-Grid Rural Houses & Remote Cabins

Areas without stable public grid, realize self-sufficient power supply with solar panels, no mandatory battery required to lower cost.

2. Home Emergency Backup Power

Support grid complementary power supply to avoid blackout impact on daily household appliances.

3. Small Farm & Workshop Independent Power System

9-units parallel expansion up to 45kW capacity to match agricultural irrigation, small workshop equipment power demand.

4. Low-Budget Beginner Solar PV Projects

Unique battery-free working function cuts early investment, perfect for customers with limited budget.

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.