The Knox Argon VM II 4000 is a high-performance off-grid solar inverter designed for users who need reliability, flexibility, and long-term efficiency. Belonging to the advanced Argon series, this inverter combines smart design with powerful functionality, making it ideal for both residential and commercial solar power systems.
With its pure sine wave output, the Knox Argon VM II 4000 ensures stable and clean power for sensitive electronics, preventing damage and improving overall system performance. The wide PV input range allows compatibility with various solar panel configurations, ensuring easy integration and scalability.
One of its most innovative features is the battery-independent design, which means the inverter can operate directly with solar panels without requiring a battery connection. This makes it an excellent choice for users looking for cost-effective and maintenance-free solutions. For setups using batteries, the built-in battery equalization function helps optimize performance, extend battery lifecycle, and reduce maintenance needs.
The inverter is designed with user convenience in mind, offering easy installation, simple operation, and a built-in anti-dust kit to protect internal components in challenging environments. It also includes a reserved communication port for BMS, enabling smart monitoring and management of energy storage systems.
Whether you are setting up a new solar system or upgrading an existing one, the Knox Argon VM II 4000 solar inverter provides a dependable, user-friendly, and energy-efficient solution for off-grid living.
Technical specifications:
| Knox Argon VM II 4000 Specifications | |
|---|---|
| Model | |
| Rated Power | 3000VA / 3000W |
| Input | |
| Voltage | 230 VAC |
| Selectable Voltage Range | 170-280 VAC (For Personal Computers); 90-280 VAC (For Home Appliances) |
| Frequency Range | 50 Hz / 60 Hz (Auto sensing) |
| Output | |
| AC Voltage Regulation (Batt. Mode) | 230 VAC ± 5% |
| Surge Power | 6000VA |
| Efficiency (Peak) | 93% |
| Transfer Time | 10 ms (For Personal Computers); 20 ms (For Home Appliances) |
| Waveform | Pure sine wave |
| Battery | |
| Battery Voltage | 24 VDC |
| Floating Charge Voltage | 27 VDC |
| Overcharge Protection | 32 VDC |
| Solar Charger & AC Charger | |
| Solar Charger Type | MPPT |
| Maximum PV Array Open Circuit Voltage | 450 VDC |
| Maximum PV Array Power | 4000W |
| MPP Range @ Operating Voltage | 60 ~ 400 VDC |
| Maximum Solar Charge Current | 100 A |
| Maximum AC Charge Current | 100 A |
| Maximum Charge Current | 100 A |
| Physical | |
| Dimension (D x W x H) | 110 x 288 x 390 mm |
| Net Weight | 7.2 kg |
| Communication Interface | RS232 / RS485, optional WiFi |
| Environment | |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -15°C to 60°C |




